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
Statistical transmit processing for enhanced MIMO channel estimation in presence of correlation
M. Kiessling,Joachim Speidel +1 more
TL;DR: A novel pilot aided channel estimation scheme is considered for wireless MIMO systems in presence of fading correlation and it is demonstrated that adequate statistical shaping of the training sequence depending on the correlation properties of the channel can minimize the estimation of the mean squared error.
Journal ArticleDOI
An Analysis of the Bidirectional LMS Algorithm over Fast-Fading Channels
Yavuz Yapici,Ali Ozgur Yilmaz +1 more
TL;DR: A bidirectional LMS algorithm is considered for estimation of fast frequency-selective time-varying channels with a promise of near optimal tracking performance and robustness to parameter imperfections under various scenarios at a practical level of complexity.
Proceedings ArticleDOI
Frame synchronization for PSAM in AWGN and Rayleigh fading channels
Haozhang Jia,David E. Dodds +1 more
TL;DR: This paper uses a non-coherent maximum likelihood (ML) frame synchronization approach in which only the magnitude of received signal is used to obtain the time position of the pilot symbols.
Journal ArticleDOI
High user capacity collaborative code-division multiple access
TL;DR: A novel collaborative multi-user transmission and detection scheme for the uplink of code-division multiple access (CDMA) that exploits the differences between users' fading channel signatures to increase the user capacity well beyond the spreading length in multiple access interference (MAI) limited environment is proposed.
Journal ArticleDOI
Optimal training for time-selective wireless fading channels using cutoff rate
TL;DR: This work considers the optimal allocation of resources—power and bandwidth—between training and data transmissions for single-user time-selective Rayleigh flat-fading channels under the cutoff rate criterion and derives the optimal resource allocation for the Gauss-Markov correlation model.
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.