Conferences related to OFDM

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2018 11th Global Symposium on Millimeter Waves (GSMM)

The main theme of the GSMM2018 is Millimeter-wave Propagation: Hardware, Measurements and Systems. It covers millimeter-wave and THz devices, circuits, systems, and applications, with a special focus on mmWave propagation. The conference will include keynote talks, technical sessions, panels, and exhibitions on the listed topics.

  • 2017 10th Global Symposium on Millimeter-Waves (GSMM)

    The main theme of the symposium is Millimeter-Wave and Terahertz Sensing and Communications. It covers millimeter- wave and THz antennas, circuits, devices, systems and applications.

  • 2016 Global Symposium on Millimeter Waves (GSMM) & ESA Workshop on Millimetre-Wave Technology and Applications

    The main theme of the conference is millimeter-wave and terahertz sensing and communications and the conference covers different topics related to millimeter-wave and terahertz technologies, such as: antennas and propagation, passive and active devices, radio astronomy, earth observation and remote sensing, communications, wireless power transfer, integration and packaging, photonic systems, and emerging technologies.

  • 2015 Global Symposium On Millimeter Waves (GSMM)

    The main theme of the GSMM 2015 is “Future Millimeter-wave and Terahertz Wireless and Wireline”. It will cover all emerging and future millimeter wave and terahertz software and hardware aspects ranging from communicating devices, circuits, systems and applications to passive and active sensing and imaging technologies and applications. The GSMM 2015 will feature world-class keynote speeches, technical sessions, panel discussions and industrial exhibitions in the following (but not limited to) topics listed below.In addition to the regular program, the GSMM 2015 will organize a unique industrial forum for presenting and discussing future wireless technologies and trends including 5G and Terahertz Wireless Systems.

  • 2012 5th Global Symposium on Millimeter Waves (GSMM 2012)

    The aim of the conferences is to bring together people involved in research and development of millimeter-wave components, equipment and systems, and to explore common areas.

  • 2009 Global Symposium On Millimeter Waves (GSMM 2009)

    The GSMM2009 will be held in Sendai, Japan from April 20 to April 22, 2009. The GSMM2009 is the second international conference in its name after the three conferences of TSMMW, MINT-MIS, and MilliLab Workshop on Millimeter-wave Technology and Applications were integrated into GSMM (Global Symposium on Millimeter Waves) in 2007. The main theme of the GSMM2009 is "Millimeter Wave Communications at Hand" and it will focus on millimeter wave devices and systems to realize Giga-bit wireless applications. The

  • 2008 Global Symposium On Millimeter Waves (GSMM 2008)

    Frequency Management and Utilization, Millimeter-Wave Communication Systems, Devices and Circuit Technologies, Wireless Access Systems, Mobile Access Systems, Satellite Communications, LANs and PANs, Home Link Systems, Photonics, Antennas and Propagation, Phased Array Antennas, Signal Processing, Wearable Devices and Systems, Automotive Radars and Remote Sensing, Supporting and Related Technologies


2018 14th IEEE International Conference on Solid-State and Integrated Circuit Technology (ICSICT)

Process & Device Technologies1. Channel Engineering2. High-k/Metal gate Technology3. Advanced Source/Drain Technology4. Interconnect Technology5. Advanced 3D Integration6. Novel Process Technologies7. Ultra-Thin Body Transistors and Device Variability8. Advanced High-k Metal Gate SoC and High Performance CMOS Platforms 9. CMOS Performance Enhancing and Novel Devices 10. Advanced FinFETs and Nanowire FETs11. CNT, MTJ Devices and Nanowire Photodiodes12. Low- Power and Steep Slope Switching Devices13. Graphene Devices14. Advanced Technologies for Ge MOSFETs15. Organic semiconductor devices and technologies16. Compound semiconductor devices and Technology 17. Ultra High Speed Transistors, HEMT/HBT etc. 18. Advanced Power Devices and Reliability19. Flash Memory20. IT Magnetic RAM21. Resistive RAM

  • 2016 13th IEEE International Conference on Solid-State and Integrated Circuit Technology (ICSICT)

    Process & Device Technologies1. Channel Engineering2. High-k/Metal gate Technology3. Advanced Source/Drain Technology4. Interconnect Technology5. Advanced 3D Integration6. Novel Process Technologies7. Ultra-Thin Body Transistors and Device Variability8. Advanced High-k Metal Gate SoC and High Performance CMOS Platforms 9. CMOS Performance Enhancing and Novel Devices 10. Advanced FinFETs and Nanowire FETs11. CNT, MTJ Devices and Nanowire Photodiodes12. Low- Power and Steep Slope Switching Devices13. Graphene Devices14. Advanced Technologies for Ge MOSFETs15. Organic semiconductor devices and technologies16. Compound semiconductor devices and Technology 17. Ultra High Speed Transistors, HEMT/HBT etc. 18. Advanced Power Devices and Reliability19. Flash Memory20. IT Magnetic RAM21. Resistive RAMs22. Phase Change Memory23. 3-Dimensional Memory24. MEMS Technology25. Thin Film Transistors26. Biosensors27. PV and Energy Harvesting28. Front End of Line (FEOL) R

  • 2014 IEEE 12th International Conference on Solid -State and Integrated Circuit Technology (ICSICT)

    Process & Device Technologies1. Channel Engineering2. High-k/Metal gate Technology3. Advanced Source/Drain Technology4. Interconnect Technology5. Advanced 3D Integration6. Novel Process Technologies7. Ultra-Thin Body Transistors and Device Variability8. Advanced High-k Metal Gate SoC and High Performance CMOS Platforms 9. CMOS Performance Enhancing and Novel Devices 10. Advanced FinFETs and Nanowire FETs11. CNT, MTJ Devices and Nanowire Photodiodes12. Low- Power and Steep Slope Switching Devices13. Graphene Devices14. Advanced Technologies for Ge MOSFETs15. Organic semiconductor devices and technologies16. Compound semiconductor devices and Technology 17. Ultra High Speed Transistors, HEMT/HBT etc. 18. Advanced Power Devices and Reliability19. Flash Memory20. IT Magnetic RAM21. Resistive RAMs22. Phase Change Memory23. 3-Dimensional Memory24. MEMS Technology25. Thin Film Transistors26. Biosensors27. PV and Energy Harvesting28. Front End of Line (FEOL) R

  • 2012 IEEE 11th International Conference on Solid-State and Integrated Circuit Technology (ICSICT)

    Silicon IC, Silicon/germanium devices , Interconnect , Low K and High Kdielectric , Advance Memories , nano -electronics, Organic and Compound semiconductor devices ,sensors and MEMS, Semiconductor material erization, Reliability , Modeling and simulation,Packaging and testing , Digital, Analog, Mixed Signal IC and SOC design technology,Low -power, RF devices & circuits, ICCAD

  • 2010 IEEE 10th International Conference on Solid-State and Integrated Circuit Technology (ICSICT)

    Silicon IC, Silicon/germanium devices , Interconnect , Low K and High K dielectric , Advance Memories , nano-electronics, Organic and Compound semiconductor devices , sensors and MEMS, Semiconductor material characterization, Reliability , Modeling and simulation, Packaging and testing , Digital, Analog, Mixed Signal IC and SOC design technology,Low-power, RF devices & circuits, IC CAD .

  • 2008 9th International Conference on Solid-State and Integrated-Circuit Technology (ICSICT)

  • 2006 8th International Conference on Solid-State and Integrated-Circuit Technology (ICSICT)

  • 2004 7th International Conference on Solid-State and Integrated-Circuit Technology (ICSICT)


2018 15th International Symposium on Wireless Communication Systems (ISWCS)

The aim of this symposium is to provide a forum for researchers and technologists to present new ideas and contributions in the form of technical papers, panel discussions, as well as real-world evaluation in the field of wireless communications, networking and signal processing.The symposium will bring together various wireless communication systems developers to discuss the current status, technical challenges, standards, fundamental issues, and future services and applications.

  • 2017 International Symposium on Wireless Communication Systems (ISWCS)

    This event will bring together experts from various research and industry fields of wireless communications, as well as representatives of standardization and regulatory bodies. In that context we foresee focusing on highly-innovative and state-of-the-art contributions in the form of original technical papers, demos or products and achievements shown at the accompanying exhibition.

  • 2016 International Symposium on Wireless Communication Systems (ISWCS)

    The Thirteen International Symposium on Wireless Communication Systems (ISWCS’16) will follow the over ten-year long traditionof that event which will bring together experts from various research and industry fields of wireless communications, as well as representatives of standardization and regulatory bodies. In that context we foresee focusing on highly-innovative and state-of-the-art contributions in the form of original technical papers, demos or products and achievements shown at the accompanying exhibition.

  • 2015 International Symposium on Wireless Communication Systems

    The aim of this symposium is to provide a forum for researchers and technologists to present new ideas and contributions in the form of technical papers, panel discussions as well as real-world evaluation of many ideas in wireless communications, networking and signal processing. This twelfth edition of the symposium will bring together various wireless communication systems developers to discuss the current status, technical challenges, standards, fundamental issues, and future services and applications. ISWCS’15 seeks to address and capture highly-innovative and state-of-the-art research from academia and the wireless industry, as well as standardization advances. The scope of the conference includes a wide range of technical challenges encompassing wireless communications, information theory, quality of service support, networking, signal processing, cross-layer design for improved performance, and future wireless broadband systems.

  • 2014 11th International Symposium on Wireless Communications Systems (ISWCS)

    Wireless communications are at the heart of a new field characterized by smart and flexible transceiver concepts, the convergence of systems and technologies, and the development of technologies with a user-centric focus. In this context, the objective of the ISWCS'2014 is to provide a recognized and dynamic forum for researchers and engineers from academia and industry to present and to discuss original ideas and contributions in all fields related to mobile wireless communication systems, and to capture highly-innovative and state-of-the-art research from academia, the wireless industry as well as standardization advances, and to present novel contributions in the form of tutorials, panel discussions, keynote speeches, technical papers, and posters. The scope of the conference includes a wide range of technical challenges encompassing wireless communications and networking, quality of service, signal processing, cross layer design, broadband access, and cooperative communication.

  • 2013 Tenth International Symposium on Wireless Communications Systems (ISWCS)

    wireless communications systems

  • 2012 9th International Symposium on Wireless Communication Systems (ISWCS 2012)

    The scope of the conference includes wireless communications, quality of service support, wireless networking, signal processing, cross layer air interface design and wireless broadband access.

  • 2011 8th International Symposium on Wireless Communication Systems (ISWCS 2011)

    ISWCS'11 seeks to address and capture highly innovative and state-of-the-art research from academia, the wireless industry and standardization bodies. The scope of the conference includes technical challenges encompassing wireless communications, quality of service support, wireless networking, signal processing, cross-layer air interface design, wireless broadband access and cooperative communication.

  • 2010 7th International Symposium on Wireless Communication Systems (ISWCS 2010)

    wireless and mobile communications, signal processing, networking, cognitive radio.

  • 2009 6th International Symposium on Wireless Communication Systems (ISWCS 2009)

    ISWCS 09 seeks to address highly-innovative research as well as wireless industry and standardization bodies contributions. The scope of the conference includes a wide range of technical challenges encompassing wireless communications and networking, quality of service support, cross-layer air interface design for improved performance, wireless broadband access, and cooperative networking.

  • 2008 IEEE International Symposium on Wireless Communication Systems (ISWCS 2008)

    Wireless communications is at the centre of a new and passionate era for telecommunications. The IEEE International Symposium on Wireless Communication Systems (ISWCS) positions itself as a recognised and dynamic forum for researchers and technologists to present and discuss original ideas in all fields related to wireless communication systems.

  • 2007 IEEE International Symposium on Wireless Communication Systems (ISWCS 2007)

    Identify and discuss the future technical challenges and business opportunities arising in the path towards the realization of ambient wireless communication networks. Together with the technical sessions, the symposium will feature tutorials and keynote presentations from leading wireless communication experts from industry, academia and regulatory and standardization bodies.

  • 2006 3rd International Symposium on Wireless Communication Systems (ISWCS 2006)

  • 2005 2nd International Symposium on Wireless Communication Systems (ISWCS 2005)

  • 2004 1st International Symposium on Wireless Communication Systems (ISWCS 2004)


2018 16th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)

WiOpt 2018 welcomes original papers related to modeling, performance evaluation, and optimization of wireless networks. The scope covers all types of wireless networks: cellular, ad hoc, content-driven, delay-tolerant, mesh, metropolitan, sensor, cognitive, vehicular, robotic, Internet of Things, virtualized, etc. The focus is on issues at and above the MAC layer, although cross-layer techniques encompassing the physical layer are equally welcome. We encourage both theoretical contributions and submissions relating to real world empirical measurements, experimental studies.


2018 23rd Opto-Electronics and Communications Conference (OECC)

Core/Access Networks and Switching Subsystems, Transmission Systems and Their Subsystems, Optical Fibers, Fiber Amplifiers, and Related Devices, Optical Active Devices and Modules, Passive Devices and Modules

  • 2017 Opto-Electronics and Communications Conference (OECC) and Photonics Global Conference (PGC)

    OECC and PGC 2017 will be held during 31 July - 4 August 2017 at Sands Expo and Convention Centre, Singapore. The aim of this conference is to foster interactions among broad disciplines in the photonics family. This mega conference brings together international leading researchers, scientists and engineers who are actively working in lasers and their applications, nanophotonics, metamaterial, biophotonics, plasmonics, optical devices, optical transmission and optical networking, optical fibers, optical switching system and related technologies. The conference widely covers the field of "Photonics" from devices to systems and networks.

  • 2015 Opto-Electronics and Communications Conference (OECC)

    To provide a platform for sharing the research work in various optical and photonic research fields

  • 2012 Opto-Electronics and Communications Conference (OECC)

    SC1. Core/Access Networks and Switching Subsystems SC2. Transmission Systems and Subsystems SC3. Optical Fibers, Cables, and Fiber Devices SC4. Optical Active Devices and Modules SC5. Optical Passive Devices and Modules SC6. CLEO Focus Session

  • 2011 16th Opto-Electronics and Communications Conference (OECC)

    1 Core/Access Networks. 2. Transmission Systems 3. Optical Fibers, Cables and Fiber Devices 4. Optical Active Devices and Modules 5. Optical Passive Devices and Modules 6. LCD, Solar Cell, and Solid-state Lighting Technologies 7. Emerging Technologies

  • 2010 15th OptoeElectronics and Communications Conference (OECC)

    1. Core/Access Networks and Switching Subsystems 2. Transmission Systems and their Subsystems 3. Optical Fibers, Cables and Fiber Devices 4. Optical Active Devices and Modules 5. Optical Passive Devices and Modules

  • 2009 14th OptoeElectronics and Communications Conference (OECC)

    Optical Networks and Broadband Access, Transmission Systems and Switching Technologies, Optical Signal Processing, Optical Sensors and Systems, Optical Fiber and Waveguide Devices, Optoelectronic Materials, Devices and Modules, and Emerging Technologies


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Periodicals related to OFDM

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Broadcasting, IEEE Transactions on

Broadcast technology, including devices, equipment, techniques, and systems related to broadcast technology, including the production, distribution, transmission, and propagation aspects.


Circuits and Systems II: Express Briefs, IEEE Transactions on

Part I will now contain regular papers focusing on all matters related to fundamental theory, applications, analog and digital signal processing. Part II will report on the latest significant results across all of these topic areas.


Communications Letters, IEEE

Covers topics in the scope of IEEE Transactions on Communications but in the form of very brief publication (maximum of 6column lengths, including all diagrams and tables.)


Communications Magazine, IEEE

IEEE Communications Magazine was the number three most-cited journal in telecommunications and the number eighteen cited journal in electrical and electronics engineering in 2004, according to the annual Journal Citation Report (2004 edition) published by the Institute for Scientific Information. Read more at http://www.ieee.org/products/citations.html. This magazine covers all areas of communications such as lightwave telecommunications, high-speed data communications, personal communications ...


Communications, IEEE Transactions on

Telephone, telegraphy, facsimile, and point-to-point television, by electromagnetic propagation, including radio; wire; aerial, underground, coaxial, and submarine cables; waveguides, communication satellites, and lasers; in marine, aeronautical, space and fixed station services; repeaters, radio relaying, signal storage, and regeneration; telecommunication error detection and correction; multiplexing and carrier techniques; communication switching systems; data communications; and communication theory. In addition to the above, ...


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Xplore Articles related to OFDM

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OFDM Signal Recovery in Deep Faded Erasure Channel

[{u'author_order': 1, u'affiliation': u'Department of Electrical and Computer Engineering Ryerson University, Toronto M5B 2K3, ON, Canada.', u'full_name': u'Alireza Rahmati'}, {u'author_order': 2, u'affiliation': u'Department of Electrical and Computer Engineering Ryerson University, Toronto M5B 2K3, ON, Canada.', u'full_name': u'Kaamran Raahemifar'}, {u'author_order': 3, u'affiliation': u'EE Department, Technological Educational Institute of Central Greece, 35100 Lamia, Greece and EEE Department, Nazarbayev University, Astana, Kazakhstan.', u'full_name': u'Theodoros A. Tsiftsis'}, {u'author_order': 4, u'affiliation': u'Department of Electrical and Computer Engineering Ryerson University, Toronto M5B 2K3, ON, Canada.', u'full_name': u'Alagan Anpalagan'}, {u'author_order': 5, u'affiliation': u'Department of Electrical and Computer Engineering, Tarbiat Modares University, Tehran, Iran.', u'full_name': u'Paeiz Azmi'}] IEEE Access, None

In high-speed digital wireless communication applications, the intersymbol interference (ISI) channel may have spectral nulls or erasures, which may degrade the orthogonal frequency division multiplexing (OFDM) bit error rate (BER) performance. In this paper, we prove that the BER performance of the OFDM system is considerably refined if the erased symbols in erasure channel (or received symbols on the deep-faded ...


Iterative Clipping Noise Elimination of Clipped and Filtered SCMA-OFDM System

[{u'author_order': 1, u'affiliation': u'National Key Laboratory of Science and Technology on Communications, University of electronic Science and Technology of China, Chengdu, China', u'full_name': u'Lin Yang'}, {u'author_order': 2, u'affiliation': u'National Key Laboratory of Science and Technology on Communications, University of electronic Science and Technology of China, Chengdu, China', u'full_name': u'Xubin Lin'}, {u'author_order': 3, u'affiliation': u'National Key Laboratory of Science and Technology on Communications, University of electronic Science and Technology of China, Chengdu, China', u'full_name': u'Xinying Ma'}, {u'author_order': 4, u'affiliation': u'National Key Laboratory of Science and Technology on Communications, University of electronic Science and Technology of China, Chengdu, China', u'full_name': u'Shaoqian Li'}] IEEE Access, 2018

Similar to conventional orthogonal frequency division multiplexing (OFDM) signal, the signals of sparse code multiple access combine with orthogonal frequency division multiplexing (SCMA-OFDM) existing the problem that its peak-to-average power ratio (PAPR) is unbearable high. In this paper, the clipping method is adopted to reduce the PAPR of the SCMA-OFDM signal. However, the clipping process brings extra noise to the ...


Performance Analysis of Hybrid Companding PAPR Reduction Method in OFDM Systems for 5G Communications

[{u'author_order': 1, u'affiliation': u'Department of ECE, University College of Engineering, Osmania University, Hyderabad, Telangana, India', u'full_name': u'Sravanti Thota'}, {u'author_order': 2, u'affiliation': u'Department of ECE, CVR College of Engineering, Mangalpally, Ibrahimpatnam R.R. Dist., Telangana, India', u'full_name': u'Yedukondalu Kamatham'}, {u'author_order': 3, u'affiliation': u'Department of ECE, University College of Engineering, Osmania University, Hyderabad, Telangana, India', u'full_name': u'Chandra Sekhar Paidimarry'}] 2018 9th International Conference on Computing, Communication and Networking Technologies (ICCCNT), None

Orthogonal Frequency Division Multiplexing (OFDM) plays a vital role in wireless communication systems like WiMax and WiFi suffers with high PAPR. In OFDM systems, to acquire tolerable transmit power the high-power amplifiers (HPA) are used. This high PAPR deranges the HPA to have substantial back-off to make sure of linear amplification of signal, which degrades the efficiency of HPA. A ...


A Precoding OFDM MIMO Radar Coexisting with a Communication System

[{u'author_order': 1, u'affiliation': u"P. O. Box 135, School of Electronic Engineering, Xidian University, Xi'an, Shaanxi, 710071, China. (email: dbao@mail.xidian.edu.cn).", u'full_name': u'Dan Bao'}, {u'author_order': 2, u'full_name': u'Guodong Qin'}, {u'author_order': 3, u'full_name': u'Jingjing Cai'}, {u'author_order': 4, u'full_name': u'Gaogao Liu'}] IEEE Transactions on Aerospace and Electronic Systems, None

A novel OFDM MIMO Radar is proposed in this paper in a scenario of coexisting with a communication system. For the purpose of avoiding interference to communication while maintaining MIMO radar's capabilities, such as, measuring signal's Direction of Departure (DOD), a collocated antenna array is divided to several overlapped subarrays. Mutually orthogonal OFDM waveforms exploiting orthogonal space-time block code are ...


Subcarrier Index-Power Modulated-Optical OFDM With Dual Superposition Multiplexing for Directly Modulated DFB-Based IMDD PON Systems

[{u'author_order': 1, u'affiliation': u'College of Electronics and Information Engineering, Shanghai University of Electric Power, Shanghai, China', u'full_name': u'Lin Chen'}, {u'author_order': 2, u'affiliation': u'School of Electronic Engineering, Bangor University, Bangor, U. K', u'full_name': u'Fadi Halabi'}, {u'author_order': 3, u'affiliation': u'School of Electronic Engineering, Bangor University, Bangor, U. K', u'full_name': u'Roger Philip Giddings'}, {u'author_order': 4, u'affiliation': u'Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Shanghai, China', u'full_name': u'Junjie Zhang'}, {u'author_order': 5, u'affiliation': u'School of Electronic Engineering, Bangor University, Bangor, U. K', u'full_name': u'Jianming Tang'}] IEEE Photonics Journal, 2018

A low-signal-modulation format-enabled highly spectrally efficient new transmission technique termed subcarrier index-power modulated optical OFDM with dual superposition multiplexing (SIPM-OOFDM-DSPM) is proposed and investigated, for the first time, in intensity modulation and direct detection (IMDD) passive optical network (PON) systems incorporating directly modulated DFB lasers (DMLs). The DSPM operation passively adds two low-signal-modulation format-encoded complex numbers and assigns the sum ...


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Educational Resources on OFDM

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eLearning

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IEEE-USA E-Books

  • OFDM Basics

    Compared to the canonical single‐carrier serial transmission scheme, orthogonal frequency‐division multiplexing (OFDM) is a block transmission scheme, which partitions information symbols into blocks, and a guard interval is inserted between consecutive blocks before transmission. There are two different types of guard intervals: one is padding zeros at the end of an OFDM symbol, and the other is inserting a cyclic prefix in the front of an OFDM symbol. Accordingly, OFDM signaling has two popular formats: zero‐padded (ZP) OFDM and cyclic‐prefixed (CP) OFDM. This chapter discusses the OFDM signal generation and reception for both ZP‐ and CP‐OFDM, and the OFDM signaling properties. It demonstrates the digital implementation of the receiver in the presence of a time‐invariant channel using discrete Fourier transform (DFT). The issues that must be addressed to make OFDM modulation successful in a practical underwater system are listed. The chapter also discusses multiple‐input multiple‐output (MIMO) OFDM.

  • Spectrally Efficient Multiplexing – OFDM

    This chapter provides an introduction to the fundamentals of orthogonal frequency‐division multiplexing (OFDM) in optical communication, including its basic mathematical formulation, discrete Fourier transform (DFT) implementation, cyclic prefix (CP), spectral efficiency (SE), and peak‐to‐average power ratio (PAPR) characteristics. It reviews two major schemes of OFDM: coherent optical OFDM (CO‐OFDM) and direct‐detection optical OFDM (DDO‐OFDM) that are popular and have been widely adopted by the optical communications. By utilizing the multiple‐input‐multiple‐output (MIMO) algorithm in digital signal processing (DSP), the capacity of CO‐OFDM system can be doubled by using polarization‐division multiplexing (PDM), and the impact of polarization‐mode dispersion (PMD) can be digitally removed from the signal. The chapter also discusses the principles and design choices for two categories of direct‐detection OFDM systems: linearly mapped DDO‐OFDM and nonlinearly mapped DDO‐OFDM. Finally, the chapter shows a few OFDM‐based superchannel transmission technologies to achieve high SE for high‐speed optical transports.

  • Orthogonal Frequency Division Multiplexing – OFDM and Multicarrier CDMA

    This chapter contains sections titled: Timing and Frequency Offset in OFDM Fading Channel Estimation for OFDM Systems 64 DAPSK and 64 QAM Modulated OFDM Signals Space-Time Coding with OFDM Signals Layered Space-Time Coding for MIMO OFDM Space-Time Coded TDMA/OFDM Reconfiguration Efficiency Multicarrier CDMA System Multicarrier DS‐CDMA Broadcast Systems Frame By Frame Adaptive Rate Coded Multicarrier DS‐CDMA System Intermodulation Interference Suppression in Multicarrier CDMA Systems Successive Interference Cancellation in Multicarrier DS‐CDMA Systems MMSE Detection of Multicarrier CDMA Approximation of Optimum Multiuser Receiver for Space-Time Coded Multicarrier CDMA Systems Parallel Interference Cancellation in OFDM Systems in Time‐Varying Multipath Fading Channels Zero Forcing OFDM Equalizer in Time‐Varying Multipath Fading Channels Channel Estimation for OFDM Systems Using Multiple Receive Antennas Turbo Processing for an OFDM‐Based MIMO System PAPR Reduction of OFDM Signals Appendix 7.1 References

  • Co‐located MIMO OFDM

    This chapter focuses on the co‐located multi‐input multi‐output (MIMO) systems‐orthogonal frequency‐division multiplexing (OFDM) receiver design in both time‐invariant and time‐varying channels. With co‐located transmitters, various space time coding approaches could be adopted to either improve the system performance or increase the bandwidth efficiency. The chapter presents a noniterative and an iterative ICI‐ignorant MIMO‐OFDM receiver. By ignoring the ICI, data detection is carried on each OFDM subcarrier individually. The chapter describes an ICI‐progressive MIMO‐OFDM receiver, which is a counterpart of the progressive receiver. It discusses an initialization method to the ICI‐progressive MIMO‐OFDM receiver. The chapter also talks about ICI‐aware MIMO‐OFDM system model, and presents the SPACE08 and MACE10 experimental results.

  • OFDM and All‐IP

    This chapter contains sections titled: Introduction to OFDM OFDM Principles MIMO Technology OFDM System Design of OFDM Channel Multi‐User OFDM Environment All‐IP Networks Architecture of All‐IP Networks

  • Asynchronous Multiuser OFDM

    This chapter presents a receiver design for asynchronous multiuser transmissions, where all users adopt zero‐padded OFDM modulation. It describes the system model for asynchronous multiuser OFDM in underwater acoustic channels. The chapter introduces the concepts of overlapped truncation and interference aggregation, built on which an asynchronous multiuser reception problem is converted to a quasi‐synchronous multiuser reception problem with interference contamination. An iterative burst‐to‐burst OFDM receiver for asynchronous multiuser reception, leveraging the techniques developed for co‐located MIMO‐OFDM reception and for external interference cancellation is described. In conclusion, the chapter provides an example analysis on the statistic distribution of the maximal misalignment of multiuser transmissions in a data collection network using a classic handshaking protocol. Performance results using both simulation and emulated data sets are provided. The numerical results highlight that the decoding performance degrades as the maximum relative delay among users increases.

  • OFDM Receiver with Parameterized External Interference Cancellation

    Underwater acoustic communication channels are prone to external interference from various sources, such as the interference from marine animals, human activities and sonar operations. This chapter focuses on explicit mitigation of an external interference with a certain time duration and bandwidth. With the parameterized interference model, an iterative orthogonal frequency‐division multiplexing (OFDM) receiver with interference cancellation is designed to perform data processing and interference estimation/cancellation iteratively. The chapter talks about the parameterization method that represents an external interference via a number of parameters. It presents an OFDM receiver, where OFDM receiver decoding is performed with interference estimation and cancellation iteratively. The chapter contains simulation and experimental (Atlantic Undersea Test and Evaluation Center (AUTEC)10 and SPACE08) results, that validate the performance of the iterative receiver.

  • Distributed MIMO OFDM

    This chapter considers an OFDM system with multiple distributed users. Via some coordination mechanisms, the signals from different users are assumed to be synchronized on the OFDM block level and the major challenge for receiver design lies on how to deal with the significantly different Doppler distortions on different data streams. In such scenarios, a single resampling operation at the receiver does not suffice to remove the main Doppler distortion of all data streams. First, the chapter introduces a front‐end processing module that consists of multiple resampling operations. Next, it presents one receiver termed as a multiuser detection (MUD) based iterative receiver. Another receiver termed as a practical receiver design for the distributed MIMO‐OFDM system is considered. Here, the channel model with path‐specific Doppler scales is adopted; however, it is assumed that data streams from the same user will experience one dominant Doppler scale.

  • Gbps OFDM Baseband Design and Implementation for 60GHz Wireless LAN Applications

    This chapter contains sections titled: OFDM Physical Layer Implemented on FPGA OFDM Baseband Receiver Architecture OFDM Baseband Transmitter Architecture 60 GHz Link Demonstration Next‐Generation OFDM Demonstrators for 60 GHz Wireless LAN Applications References

  • Nonbinary LDPC Coded OFDM

    Channel coding is an integral part of a digital communication system. This chapter discusses two basic formats of coupling channel coding with OFDM modulation. It then focuses on nonbinary low‐density‐parity‐check (LDPC) codes. Channel coding is introduced to protect information bits from errors after transmission through communication channels, and the bit‐to‐symbol mapping are used to increase the transmission spectral efficiency. The chapter talks about several channel coding schemes widely used in OFDM systems. The performance of nonbinary LDPC codes depends on various factors. In general, the larger the field size and the larger the block length, the better is the performance for nonbinary LDPC codes. Encoding of a general LDPC code can be done in almost linear time instead of quadratic time on the block length. Decoding of LDPC codes can use standard sum‐product algorithms (SPA) and its low‐complexity variants. The chapter presents some Monte Carlo simulation results of coded OFDM.



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