Conferences related to Downlink

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ICC 2015 - 2015 IEEE International Conference on Communications

IEEE ICC is one of the two flagship IEEE conferences in the field of communications; London is to host this conference in 2015. Each annual IEEE ICC conference typically attracts approximately 1,500-2,000 attendees, and will present over 1,000 research works over its duration. As well as being an opportunity to share pioneering research ideas and developments, the conference is also an excellent networking and publicity event, giving the opportunity for businesses and clients to link together, and presenting the scope for companies to publicise themselves and their products among the leaders of communications industries from all over the world.

  • ICC 2014 - 2014 IEEE International Conference on Communications

    The International Conference on Communications (ICC) is one of the two flagship conferences of the IEEE Communications Society, together with IEEE Globecom. Each year the ICC conference attracts about 2-3.000 submitted scientific papers, a technical program committee involving about 1.500 experts provides more than 10.000 reviews, the conference being finally attended by 1.500 - 2.000 professionals from all around the world. IEEE ICC is therefore one of the most significant scientific events of the networking and communications community, a must-attend forum for both industrials and academics working in this area.

  • ICC 2013 - 2013 IEEE International Conference on Communications

    A full programs of technical and professional activities spanning the entire range of hot topics in voice, data, image, quality of service, home networking, signal processing, wireless, optical, and multimedia communications

  • ICC 2012 - 2012 IEEE International Conference on Communications

    Full programs of technical and professional activities spanning the entire range of hot topics in voice, data, image, quality of service, home networking, signal processing, wireless, optical, and multimedia communications

  • ICC 2011 - 2011 IEEE International Conference on Communications

    A full programs of technical and professional activities spanning the entire range of hot topics in voice, data, image, quality of service, home networking, signal processing, wireless, optical, and multimedia communications.

  • ICC 2010 - 2010 IEEE International Conference on Communications

    Telecommunications

  • ICC 2009 - 2009 IEEE International Conference on Communications

  • ICC 2008 - 2008 IEEE International Conference on Communications

  • ICC 2007 - 2007 IEEE International Conference on Communications


2014 IEEE 80th Vehicular Technology Conference (VTC Fall)

VTC will bring together individuals from academia, industry and government to discuss and exchange ideas in the fields of mobile, wireless and vehicular technology as well as the applications and services associated with such technology. Features include world-class plenary speakers, panel sessions, tutorials, and both technical and application-based sessions.


2013 IEEE 77th Vehicular Technology Conference (VTC Spring)

VTC will bring together individuals from academia, industry and government to discuss and exchange ideas in the fields of mobile, wireless and vehicular technology as well as the applications and services associated with such technology. Features include world-class plenary speakers, panel sessions, tutorials, and both technical and application-based sessions.


TENCON 2013 - 2013 IEEE Region 10 Conference

Communication and network,Signal and information processing,Automatic control,Computational intelligence,Intelligent transportation,Grid and cloud computing,Cognitive radio and system,Internet of things,Computer science and technology,Audio and speech processing,Electronic devices,Circuits and systems,Power and energy,Microwave, antennas and propagation,Information and data security,System design and implementation

  • TENCON 2012 - 2012 IEEE Region 10 Conference

    TENCON is a general engineering conference covering electrical and electronics engineering and computer science. The theme of the conference is "Sustainable Development through Humanitarian Technology". The conference will be organized under several different tracks consisting of power engineering, signal processing, communications, computing, circuits and systems, software systems and the theme.

  • TENCON 2011 - 2011 IEEE Region 10 Conference

    Trends and Development in Converging Technology towards 2020

  • TENCON 2010 - 2010 IEEE Region 10 Conference

    Information and Communication Technologies

  • TENCON 2009 - 2009 IEEE Region 10 Conference

    The theme of the conference is "Emerging Technologies for Sustainable Development". Topics of interest include, but are not limited to, Power and Energy; Signal Processing; Networks and Communications; Circuits and Systems; Computational Intelligence; Computing Architectures & Systems; Software and Database Systems.

  • TENCON 2008 - 2008 IEEE Region 10 Conference

    TENCON 2008 is a general engineering conference covering electrical and electronics engineering and computer science. The theme of the conference is 'innovative technologies for societal transformation'. The conference will be organized under seven different tracks consisting of power engineering, signal processing, communications, computing, circuits and systems, software systems and the theme.

  • TENCON 2007 - 2007 IEEE Region 10 Conference

    Computing, Communications, Signal Processing, Energy & Infrastructure, Antennas and Propagation, System-on-Chip, Computer Networks, Optical Electronics , Technology & Society

  • TENCON 2006 - 2006 IEEE Region 10 Conference

  • TENCON 2005 - 2005 IEEE Region 10 Conference


2012 IEEE International Conference on Communication Systems (ICCS)

The following and related areas in Information and Communication Engineering: green communications, antennas and propagation, wireless networks, data security, communication theory, information theory, signal processing, data centre networks, optical communications, satellite communications, smart grid communications.

  • 2010 IEEE International Conference on Communication Systems (ICCS)

    Antennas, propagation & channel modeling Cognitive radio Dynamic spectrum management Green communication technologies & Systems Information theory Medical ICT systems Microwave devices & systems Mobile radio communication systems Modulation & coding Network architecture and security Optical communications & photonics Resource allocation, mobility management & QoS provisioning Satellite communications Signal processing for communications Space time processing & MIMO systems Ultra wideband tech

  • 2008 11th IEEE Singapore International Conference on Communication Systems (ICCS)

    Antennas, propagation & channel modeling, Cognitive radio, High speed networks, Information theory, Microwave devices & systems, Mobile radio communication systems, Modulation & coding, Network architecture and security, Optical communications & photonics, Signal processing for communications, MIMO systems, Spread spectrum systems, Ultra wideband technology, Wireless ad-hoc & sensor networks.



Periodicals related to Downlink

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Signal Processing, IEEE Transactions on

The technology of transmission, recording, reproduction, processing, and measurement of speech; other audio-frequency waves and other signals by digital, electronic, electrical, acoustic, mechanical, and optical means; the components and systems to accomplish these and related aims; and the environmental, psychological, and physiological factors of thesetechnologies.


Vehicular Technology, IEEE Transactions on

IEEE Transactions on Vehicular Technology was one of the most-cited journals, ranking number-six (tying with IEEE Communications Letters) in telecommunications in 2002, according to the annual Journal Citation Report (2002 edition) published by the Institute for Scientific Information. This periodical covers land, airborne, and maritime mobile services; portable or hand-carried and citizens' communications services, when used as an adjunct to ...




Xplore Articles related to Downlink

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A QoS Aware Eigenmode Based Power Allocation Scheme for MIMO-OFDM Multi-User Systems

Yubo Yang; Lin Tian; Gengfa Fang; Jinglin Shi; Zhongcheng Li IEEE GLOBECOM 2007 - IEEE Global Telecommunications Conference, 2007

In this paper, a practical eigenmode based scheduling algorithm with double loops (ESDL) is proposed for multi-user MIMO/OFDM systems. The wireless channels are decomposed into several eigenmodes, and the eigenmode based power allocation is formulated into an optimization problem, whose object is to maximize the system capacity while guaranteeing users' QoS requirements. By replacing the QoS constraints with penalty functions, ...


Theoretical analysis of full-duplex system with power control

Mohammed Al-Imari 2016 International Symposium on Wireless Communication Systems (ISWCS), 2016

Full-duplex transceivers have the potential to double the wireless system spectral efficiency by enabling transmission and reception at the same time on the same frequency. However, full-duplex transceivers face the challenge of inter-user interference and the residual self-interference. Hence, it is not expected that full-duplex technology to enhance the system performance compared to half-duplex technology in all scenarios. In this ...


An MAC protocol with reservation and channel sennsing for the integrated voice/data packet CDMA networks

In-Taek Lim Fifth Asia-Pacific Conference on ... and Fourth Optoelectronics and Communications Conference on Communications,, 1999

A medium access control protocol is proposed and analyzed under the integrated voice and data services in the microcellular packet CDMA networks. The protocol follows the channel reservation and status sensing mechanisms. The base station broadcasts the uplink channel status information. Based on the channel status information, a voice terminal can reserve a spreading code to transmit voice packets during ...


Pearson system-based blind source separation for estimating non-Gaussian fading channels in CDMA communication

C. Kalkan; M. A. Altinkaya Proceedings of the IEEE 12th Signal Processing and Communications Applications Conference, 2004., 2004

A Pearson system-based blind source separation method is used for detecting the signal, which is subject to multiple access interference, coming to a mobile user in a CDMA downlink communication. Considering some fading channel measurements showing that the fading channel coefficients may have an impulsive nature, these coefficients are modeled with an α-stable distribution whose shape parameter a takes values ...


Dynamic Resource Allocation in Cellular Radio Networks with Downlink Relaying

Hyunduk Jung; Eunhyun Kwon; Inkeun Cho; Sunggook Lim; Jaiyong Lee 2008 International Conference on Information Networking, 2008

In this paper, we propose dynamic resource allocation with spatial reuse to improve total system throughput in multi-user system and multi-hop communication. The comparison of optimal and heuristic reuse scheme shows the heuristic reuse scheme is still good enough with low complexity. The simulation result shows that dynamic resource reuse scheme among fixed RSs increases the system throughput.


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Educational Resources on Downlink

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eLearning

A QoS Aware Eigenmode Based Power Allocation Scheme for MIMO-OFDM Multi-User Systems

Yubo Yang; Lin Tian; Gengfa Fang; Jinglin Shi; Zhongcheng Li IEEE GLOBECOM 2007 - IEEE Global Telecommunications Conference, 2007

In this paper, a practical eigenmode based scheduling algorithm with double loops (ESDL) is proposed for multi-user MIMO/OFDM systems. The wireless channels are decomposed into several eigenmodes, and the eigenmode based power allocation is formulated into an optimization problem, whose object is to maximize the system capacity while guaranteeing users' QoS requirements. By replacing the QoS constraints with penalty functions, ...


Theoretical analysis of full-duplex system with power control

Mohammed Al-Imari 2016 International Symposium on Wireless Communication Systems (ISWCS), 2016

Full-duplex transceivers have the potential to double the wireless system spectral efficiency by enabling transmission and reception at the same time on the same frequency. However, full-duplex transceivers face the challenge of inter-user interference and the residual self-interference. Hence, it is not expected that full-duplex technology to enhance the system performance compared to half-duplex technology in all scenarios. In this ...


An MAC protocol with reservation and channel sennsing for the integrated voice/data packet CDMA networks

In-Taek Lim Fifth Asia-Pacific Conference on ... and Fourth Optoelectronics and Communications Conference on Communications,, 1999

A medium access control protocol is proposed and analyzed under the integrated voice and data services in the microcellular packet CDMA networks. The protocol follows the channel reservation and status sensing mechanisms. The base station broadcasts the uplink channel status information. Based on the channel status information, a voice terminal can reserve a spreading code to transmit voice packets during ...


Pearson system-based blind source separation for estimating non-Gaussian fading channels in CDMA communication

C. Kalkan; M. A. Altinkaya Proceedings of the IEEE 12th Signal Processing and Communications Applications Conference, 2004., 2004

A Pearson system-based blind source separation method is used for detecting the signal, which is subject to multiple access interference, coming to a mobile user in a CDMA downlink communication. Considering some fading channel measurements showing that the fading channel coefficients may have an impulsive nature, these coefficients are modeled with an α-stable distribution whose shape parameter a takes values ...


Dynamic Resource Allocation in Cellular Radio Networks with Downlink Relaying

Hyunduk Jung; Eunhyun Kwon; Inkeun Cho; Sunggook Lim; Jaiyong Lee 2008 International Conference on Information Networking, 2008

In this paper, we propose dynamic resource allocation with spatial reuse to improve total system throughput in multi-user system and multi-hop communication. The comparison of optimal and heuristic reuse scheme shows the heuristic reuse scheme is still good enough with low complexity. The simulation result shows that dynamic resource reuse scheme among fixed RSs increases the system throughput.


More eLearning Resources

IEEE-USA E-Books

  • Multiple Access and the Cellular Principle

    This chapter discusses the simultaneous communication of multiple users. We start out by discussing multiple access between a single base station (access point) and multiple mobile stations (handsets, users). In particular, Time Division Multiple Access (TDMA) and Frequency Division Multiple Access (FDMA) allow a simple assignment of the resources to different users; Code Division Multiple Access (CDMA) is relegated to Chapter 18. Basic aspects of queuing theory, including the Erlang B and Erlang C model, are then introduced, and we show that due to the trunking gain, the admissible ratio of offered traffic to number of available channels increases (for a given outage probability) when the number of available channels increases. We then discuss various schemes for multiple access for packet radio, including Aloha, slotted Aloha, Carrier Sense Multiple Access (CSMA) and packet reservation multiple access. A brief discussion of routing in packet radio is also given, though a more extensive discussion is relegated to Chapter 22. Duplexing, in particular Frequency Division Duplexing (FDD) and Time Division Duplexing (TDD), allows the separation of transmitted and received data. We then describe the cellular principle. In order to increase the number of simultaneous links on which communication can take place, an area is divided into multiple cells, each of which has one base station. In order to limit interference, the same time- frequency resource can only be reused in cells separated by a certain minimum reuse distance; the number of cells that are all using disjoint time-frequency resources is called the cluster size. For the simple case of hexagonal cells, explicit equations for cluster size are given. Various methods for increasing capacity, including overlay structures, fractional loading, and partial frequency reuse, are also discussed. The information theory of bro adcast channels (downlink) and multiple-access channels (uplink) is also briefly described.

  • Non-Orthogonal Multiple Access (NOMA): Concept and Design

    This chapter introduces the concept of non-orthogonal multiple access (NOMA) for both downlink and uplink channels, where it enables power-domain user multiplexing and the exploitation of the channel-gain difference among users in a cellular system, two features that were not exploited in current and past cellular systems. It also explains the interface-design aspects of NOMA, including multi-user scheduling and multi-user power control, and its combination with multiple-input, multiple-output (MIMO). For downlink NOMA, the chapter shows the link-level performance and system-level performance of NOMA combined with MIMO for OFDMA. For uplink NOMA, it presents a system-level performance comparison of NOMA with SC-frequency division multiple access (FDMA) and show the impact of fractional frequency reuse (FFR). The chapter provides the performance evaluation results based on computer simulations and the measurements obtained from the NOMA testbed. It presents NOMA testbed, the potential gains for both system-level and link-level simulations when NOMA is combined with SU-MIMO.

  • Intelligent Antennas for Cellular Systems

    Base-station antenna arrays are a promising method for providing large capacity increases in cellular mobile radio systems. This article describes some of the basic ideas behind antenna arrays for both time-division and code- division multiple-access networks. This paper considers channel-modeling issues, uplink space-time receiver structures, and a range of suitable algorithms to operate them. The potential capacity gains that can be achieved with antenna arrays are discussed and, finally, the extension of these techniques to the downlink is introduced.

  • 3GPP LongTerm Evolution

    We describe the 3GPP Long Term Evolution (LTE) standard, a member of the IMT- Advanced family for fourth-generation cellular communications. The system consists of radio access network (RAN) and core network (System Architecture Evolution SAE or Enhanced Packet Core EPC). Layers of the transmission protocol range from Packet Data Convergence Protocol (PDCP) to Radio Link Control (RLC), MAC, and PHY. After an overview of the physical layer, the division of the time axis into frames, subframes, and slots is discussed. The modulation format is OFDM for the downlink, and single-carrier transmission with frequency domain equalization (SC-FDE) for the uplink. We define resource element and resource blocks (RB). Data are mapped onto physical resources by first mapping symbols onto virtual resource blocks (VRBs), and from there to physical resource blocks (PRBs). There exist two types of reference signals RS (pilot tones): demodulation RS, and sounding RS; both based on Chadoff-Zhu sequences. Error control coding includes cyclic redundancy check (CRC), convolutional codes or turbo codes, and Hybrid ARQ (HARQ). Multiple-antenna techniques include Alamouti codes, possibly combined with antenna selection, for transmit diversity and (open-loop or closed-loop) spatial multiplexing. LTE distinguishes between logical channels and physical channels (time/frequency resources). Logical subchannels include Traffic channels (DTCH, MTCH) and Control channels (BCCH, PCCH, CCCH, DCCH, MCH). These are then mapped, via certain transport channels, to the physical channels. Primary and secondary synchronization signals carry timing information and cell ID. We discuss control information associated with downlink shared channel and uplink signaling (uplink control information, random access, and control signaling for the uplink shared channel). We also describe physical layer procedures, including establishing of a connection, retransmission methods, scheduling, power control, and handover.

  • Dynamic Planning in Green Networks

    This chapter investigates operation of green wireless networks by using a dynamic planning approach. These approaches are the major focus of the chapter. The chapter presents optimal energy¿¿?efficient and QoS¿¿?aware dynamic cell¿¿?zooming and BS¿¿?switching policies for dense small¿¿?cell deployment subject to constraints on user data rate requirements and outage probability. It dicusses a dynamic planning approach that can capture and balance the trade¿¿?off in energy efficiency between network operators (in the downlink) and mobile users (in the uplink). Several works have addressed energy¿¿?efficient cell¿¿?zooming mechanisms and sleep policies for heterogeneous networks with dense small¿¿?cell deployment. The chapter presents a dynamic planning approach to optimally associate users to access nodes (pico and macro BSs) by adjusting the coverage area of these BSs. It talks about an analytical model for optimizing the cell size in a dense macro¿¿?pico heterogeneous network to minimize energy consumption while maintaining the end user quality of service.

  • MultiUser MIMO

    This chapter first discusses the capacity of the multi-user MIMO system that uses the multiple antennas in the downlink, from the base station to the multiple users, before moving on to present the pre-coded transmission schemes that allow the coordinated signal detection with interference cancellation on the receiver side. It also presents the ready-to-run MATLAB? programs for the simulation of multi-user MIMO transmission schemes.

  • Design Considerations of Biomedical Telemetry Devices

    The specifications for an implantable medical device (IMD) are provided by the application but share a common set of constraints in size, power, and functionality. This chapter provides a brief overview of the design of biomedical telemetry devices and in particular IMDs using inductive links. The basic system architecture and inductive link fundamentals are discussed, as well as methods and circuits for power transfer and data communication. Safety issues relating to overheating of body tissue as a result of increase of temperature are also examined. There are several methods of harvesting energy for IMDs such as kinetic, thermoelectric, fuel cells, infrared radiation, low- frequency magnetic fields, and inductive links. Data communication is called the downlink from the transmitter to the implant, and the uplink from the implant to the transmitter. Due to dual data and power transfer, the carrier amplitude is greater than or equal to the supply voltages.

  • High Speed Downlink Packet Access (HSDPA)

    This chapter contains sections titled: Basic Structure of HS-DSCH Overview of HSDPA Enhancement Technologies HS-DSCH MAC Architecture?-?UE Side HS-DSCH MAC Architecture?-?UTRAN Side Overview of HSDPA Techniques to Support UTRA Orthogonal Frequency Division Multiplexing (OFDM) Prospect of OFDM-based Applications

  • WiMAX/IEEE 802.16

    This chapter gives an overview of WiMAX (Worldwide Interoperability for Microwave Access). A Wimax system consists of access service network (ASN) and internet-based connectivity service network (CSN). It specifies both a FDD mode when operating in paired spectrum, and a TDD mode for upaired spectrum. Multiple access capability is achieved by OFDMA, in particular different users are assigned different subcarriers. We first review the physical layer. Wimax uses OFDM (with cyclic prefix) with adaptive modulation and coding for both the uplink and the downlink. For error correction coding, convolutional codes and turbo codes are foreseen; further error correction is achieved by hybrid ARQ (HARQ) with chase combining or incremental redundancy. We then turn to the logical channels and physical channels (time/frequency resources). The time axis is divided into zones, frames, and subframes. In addition to the data bursts for the separate users, a frame contains preambles and control signaling (DL and UL-MAP, Frame Control Header FCH), and the ranging subchannel. Various schemes exist for subcarrier permutation, i.e., assigning data to the time/frequency resources (called subchannels and tiles, i.e., subcarriers or groups of subcarriers). Different types of permutations are defined for use in different zones: the PUSC (partial use of subcarriers), TUSC (tiled use of subcarriers), FUSC (full use of subcarriers), and AMC (Adaptive modulation and coding). We then describe multiple antenna techniques in Wimax. For space-time coding, Alamouti, antenna selection, antenna cycling, and/or beamforming is used. Spatial multiplexing is either open-loop, or closed-loop (precoding). We finally discuss link control, including establishing of a connection (including scanning, synchronization, initial ranging), scheduling and resource request, quality of service (QoS) control, power control, handover, and mobility support.

  • Performance with Random Signatures

    This chapter contains sections titled: Random Signatures and Large System Analysis System Models Large System Limit Random Matrix Terminology Incremental Matrix Expansion Analysis of Downlink Model Spectral Efficiency Adaptive Linear Receivers Other Models and Extensions Bibliographical Notes Appendix: Proof Sketch of Theorem 1 Appendix: Free Probability Transforms References



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