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
Estimation and equalization of time-selective fading channels
TL;DR: This paper model the multiplicative channel fading effect as an autoregressive process and the objective is to recover the original transmitted symbols in a block-by-block fashion.
Proceedings ArticleDOI
Convergence analysis of an adaptive channel estimation algorithm using cyclic prefix in multicarrier modulation systems
Xiaowen Wang,K.J.R. Liu +1 more
TL;DR: T theoretical analysis is carried on the convergence of the adaptive channel estimation algorithm considering both channel noise and decision error and it is proved that the algorithm is guaranteed to converge with proper loading.
Proceedings ArticleDOI
On Achievable Data Rates and Optimal Power Allocation in Fading Channels with Imperfect CSI
TL;DR: It is shown how the classical waterfllling algorithm should be modified for the case of imperfect channel state information at the transmitter and optimal frame lengths are found for analytical models with varying angular spreads.
Proceedings ArticleDOI
Spline based channel estimation for STBC-SM systems over fast-varying rician fading channels
TL;DR: It has been shown via computer simulations that the proposed spline based channel estimation channel estimation outperforms the piecewise linear interpolation (PLI) and the nearest neighbor interpolations (NNI) based channel estimations.
Dissertation
Channel estimation in multicarrier communication systems
TL;DR: In this paper, the authors investigate and compare various efficient channel estimation schemes for OFDM systems which can also be extended to MC DS-CDMA systems, and present the performance of the estimators in terms of the mean square estimation error (MSEE) and bit error rate (BER).
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.