# 9 resources related to Simo Communication

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### Xplore Articles related to Simo Communication

2019 URSI Asia-Pacific Radio Science Conference (AP-RASC), 2019

This paper presents fast Fourier transform (FFT) based multiband spectrum sensing over multipath Rayleigh frequency selective fading channel for single input multiple output (SIMO) full duplex (FD) cognitive radio networks (CRNs) under residual self-interference (RSI) that affirms a more realistic scenario in heterogeneous networks for future wireless applications. In in-band FD mode, secondary users (SUs) can sense and transmit simultaneously ...

IEEE Transactions on Power Electronics, 2019

In the paper by Patra et al., a single-inductor multiple-output switcher was presented to produce buck, boost, and inverted outputs simultaneously. Unfortunately, this study showed some unexpected mistakes, especially in state-space equations and in the calculation of output voltages. The objective of this note was to provide correct analysis and rectify the errors in this paper. Some tables and equations ...

2018 IEEE 38th Central America and Panama Convention (CONCAPAN XXXVIII), 2018

The Prony analysis is very used for the estimation of the parameters of low frequency electromechanical oscillations present in power system electrical signals, but this method can be applied only in conditions where the system presents a linear behavior. In this work we propose to use a multiresolution analysis applying the Discrete Wavelet Transform to identify in the signal the ...

IEEE Communications Letters, 2018

In order to fill the gap of the mathematical analysis's lack for the secrecy outage probability (SOP) over single-input multiple-output (SIMO) α-μ wiretap fading channels, this letter initially provides highly accurate and asymptotic closed-form expressions for the SOP. The novel highly accurate formulations are derived in a simple and general form in terms of the bivariate Fox's H-function, which is ...

2018 52nd Asilomar Conference on Signals, Systems, and Computers, 2018

In this paper, we introduce a multiple access scheme for non-coherent single- input multiple-output (SIMO) communications. We first define an individual codebook for each user as the image of a non-coherent single-user codebook of smaller dimension through a bijective mapping. We investigate the available options at the decoder, including linear equalization in the absence of reference symbols, and joint multi-user ...

### Educational Resources on Simo Communication

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• This paper presents fast Fourier transform (FFT) based multiband spectrum sensing over multipath Rayleigh frequency selective fading channel for single input multiple output (SIMO) full duplex (FD) cognitive radio networks (CRNs) under residual self-interference (RSI) that affirms a more realistic scenario in heterogeneous networks for future wireless applications. In in-band FD mode, secondary users (SUs) can sense and transmit simultaneously using the same channel, doubling the spectrum efficiency of the FD enabled CRNs [1]. Researchers have extensively worked on multiband spectrum sensing in single input single output half-duplex CRNs under additive white Gaussian noise scenario [2], but fading environment is another limiting factor that results in additional detection performance degradation. In this work, we address this issue and carried out the evaluations under multipath fading scenario and to alleviate the degradation in detection performance due to fading, we use multiple antennas at SU. The SIMO sensing architecture of the proposed energy detector is shown in Fig. 1. The Proposed sensing algorithm first calculates the energy of the received $k^{th}$ subband of $m^{th}$ orthogonal-frequency- division-multiplexing (OFDM) symbol. Next, two dimensional windowing operation followed by hypothesis detection of the presence and absence of PU signal is performed on the calculated energy value. The block schematic diagram of the proposed ED is shown in Fig. 2, in which LRT statistic could be formed as:

• In the paper by Patra et al., a single-inductor multiple-output switcher was presented to produce buck, boost, and inverted outputs simultaneously. Unfortunately, this study showed some unexpected mistakes, especially in state-space equations and in the calculation of output voltages. The objective of this note was to provide correct analysis and rectify the errors in this paper. Some tables and equations have been modified that were present in the initial draft of this paper. The obtained parameters in this work could be an effective supplement and extension for the original work in the paper by Patra et al.

• The Prony analysis is very used for the estimation of the parameters of low frequency electromechanical oscillations present in power system electrical signals, but this method can be applied only in conditions where the system presents a linear behavior. In this work we propose to use a multiresolution analysis applying the Discrete Wavelet Transform to identify in the signal the duration of the transients where the Prony analysis presents limitations. Coiflets, Symlets and Daubechies have been used as Mother Wavelet functions, obtaining similar results for the three cases. Finally, the Prony analysis is performed on time windows where there are no disturbances or if low frequency electromechanical oscillations are observed. In this work the methodology is applied to data obtained in the interconnected system of western North America where oscillations are exhibited around 0.2 - 0.3 Hz. The result of the use of both techniques offers more certainty in the estimation of the parameters of the oscillations, which makes the methodology proposed for.

• In order to fill the gap of the mathematical analysis's lack for the secrecy outage probability (SOP) over single-input multiple-output (SIMO) α-μ wiretap fading channels, this letter initially provides highly accurate and asymptotic closed-form expressions for the SOP. The novel highly accurate formulations are derived in a simple and general form in terms of the bivariate Fox's H-function, which is extensively used in the literature. In addition, the asymptotic analysis of the SOP is derived at high signal-to-noise ratio regime. The obtained expressions are numerically validated and compared with the Monte-Carlo simulation results. The derived SOP is in highly accurate match with simulation results for the SIMO case, and a perfect match with simulated results for single-input single-output (SISO) case.

• In this paper, we introduce a multiple access scheme for non-coherent single- input multiple-output (SIMO) communications. We first define an individual codebook for each user as the image of a non-coherent single-user codebook of smaller dimension through a bijective mapping. We investigate the available options at the decoder, including linear equalization in the absence of reference symbols, and joint multi-user decoding. In particular, we propose greedy decoders that exploit the structure of the encoder mappings to separate the signals of different users, denoise, and decode each signal as in the single-user case. Numerical results show that our scheme outperforms the time- division multiple access and the pilot-based coherent approach.

• We propose the first joint estimation scheme of time of arrivals (TOAs) and carrier frequency offsets (CFOs) for multiuser single-input multiple-output orthogonal frequency-division multiplexing systems. By designing carefully preambles of K users and utilizing the properties of the channels and CFO vectors, a complex 2K-dimensional joint multi-TOA and multi-CFO estimation problem is divided into 2K low-complexity 1-D problems. The integer and fractional parts of each user's CFO are estimated in an integral and closed form. Simulation results show that the proposed scheme provides higher TOA and CFO estimation accuracy than the existing methods, while at much lower computational complexity. The achieved TOA estimation performance is robust against CFOs and close to the idea case with no CFOs at the receiver.