Journal ArticleDOI
An analysis of pilot symbol assisted modulation for Rayleigh fading channels (mobile radio)
TLDR
In this paper, the bit error rate in binary-phase-shift-keying (BPSK) and in quadrature phase-shift keying (QPSK), for a tight upper bound on the symbol error rate for 16-QAM was presented.Abstract:
The author presents pilot-symbol-assisted modulation (PSAM) on a solid analytical basis, a feature missing from previous work. Closed-form expressions are presented for the bit error rate (BER) in binary-phase-shift-keying (BPSK) and in quadrature-phase-shift-keying (QPSK), for a tight upper bound on the symbol error rate in 16 quadrature-amplitude-modulation (16-QAM), and for the optimized receiver coefficients. The error rates obtained are lower than for differential detection for any combination of signal-to-noise ratio (SNR) and Doppler spread, and the performance is within 1 dB of a perfect reference system under slow-fading conditions and within 3 dB when the Doppler spread is 5% of the symbol rate. >read more
Citations
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Implementation of the least squares channel estimation algorithm for mimo-ofdm systems
TL;DR: The least squares (LS) channel estimation algorithm for a multiple-input multiple-output (MIMO) system with orthogonal frequency division multiplexing (OFDM) is considered and the algorithm implementations are shown to consume reasonably small amount of hardware resources.
Journal ArticleDOI
Auction-Based Power Allocation for Multiuser Two-Way Relaying Networks
Junni Zou,Hongwan Xu +1 more
TL;DR: This paper addresses the power allocation problem in a network-coded multiuser two-way relaying network, where multiple pair users communicate with their partners via a common relay node, and compete for the transmit power of the relay.
Proceedings ArticleDOI
On the ARMA Approximation for Frequency-Flat Rayleigh Fading Channels
TL;DR: It is shown that the approximation of the actual fading process, usually exploited in the literature, is far from optimal, and a novel technique is presented, based on an off-line minimization of the mean square error of the channel estimate, which ensures a considerable gain in terms of bit-error rate for Kalman-based receivers without increasing the receiver complexity.
Proceedings ArticleDOI
Spatial-Temporal BEM and Channel Estimation Strategy for Massive MIMO Time-Varying Systems
TL;DR: In this paper, a discrete Fourier transform aided spatial-temporal basis expansion model (ST-BEM) is proposed to reduce the effective dimensions of uplink/downlink channels, such that training overhead and feedback cost could be greatly decreased.
References
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Digital communications
TL;DR: This month's guest columnist, Steve Bible, N7HPR, is completing a master’s degree in computer science at the Naval Postgraduate School in Monterey, California, and his research area closely follows his interest in amateur radio.
Book
Mobile Communications Engineering
TL;DR: In this article, the authors describe the characteristics of mobile radio signals and apply statistical communication theory to propagation and received signal characteristics, and provide a discussion of system performance and how to evaluate a new system.
Journal ArticleDOI
TCMP-a modulation and coding strategy for Rician fading channels
M.L. Moher,J.H. Lodge +1 more
TL;DR: TCMP is a novel modulation strategy for Rician fading channels that multiplexes a time domain pilot sequence with trellis-coded data to permit coherent detection and is shown to provide remarkably robust performance in the presence of fading.
Proceedings ArticleDOI
Rayleigh fading compensation method for 16QAM in digital land mobile radio channels
S. Sampei,T. Sunaga +1 more
TL;DR: In this paper, a Rayleigh fading compensation method for 16-QAM was proposed, where second-order interpolation was used for the fading compensation, and the degradation due to the proposed fading compensation was about 2 dB.