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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Proceedings ArticleDOI
Iterative B-spline channel estimation for fast flat fading channels
TL;DR: A novel B-spline iterative channel estimation technique over fast flat fading channels is proposed, which requires only a few multiplications per symbol per iteration which is only a small fraction of that of the Wiener filter.
Journal ArticleDOI
Cutoff rate optimal binary inputs with imperfect CSI
TL;DR: The cutoff rate is evaluated and an analytic design rule is derived that allows adaptive switching between BPSK and on-off keying as the receiver CSI changes, establishing the virtues of a modulation scheme that employs only these limiting distributions, rather than the full spectrum of binary inputs.
Patent
A radio channel estimator exploiting correlations in space, frequency and time domain
TL;DR: In this article, a radio channel estimator is proposed for estimating radio channels, the radio channel having at least a first dimension and a second dimension, the first and second dimensions being different and corresponding to a frequency, a time or a spatial dimension.
Proceedings ArticleDOI
Application of Reed-Solomon codes with erasure decoding to type-II hybrid ARQ transmission
M.L.B. Riediger,Paul Ho +1 more
TL;DR: Throughput simulation results show that when using errors-only decoding, rate-compatible punctured RS codes outperform their constituent puncturedRS codes, and a power savings is observed when erasure decoding is employed.
Proceedings ArticleDOI
A novel method of channel estimation for W-CDMA
Dong Xiaojian,You Xiaohu +1 more
TL;DR: In this article, a method of interpolation on a second-order curve using the instantaneous channel estimation of two successive slots based on the least square method (SOLSM) is presented.
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.