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
An algorithm for exploiting channel time selectivity in pilot-aided MIMO systems
TL;DR: An iterative algorithm is proposed that substantially improves the performance of pilot aided MIMO channel interpolation systems by exploiting the time selectivity of the channel.
Proceedings ArticleDOI
A Low-Variance and Low-Complexity Carrier-Frequency-Offset Estimator using Multiple Pilot Sequences
TL;DR: The proposed data-aided carrier frequency offset estimator is novel because it operates on multiple pilot sequences, spaced in time, and is low-complexity, as well as highly accurate.
Proceedings ArticleDOI
A comparison study between different sliding window decorrelating detectors for asynchronous CDMA-UMTS
TL;DR: This paper proposes some methods using correction for both edges of the finite observed window of the decorrelator structure based on linear filtering that leads to a near-far resistant algorithm in CDMA systems with a moderate complexity.
Proceedings ArticleDOI
Fractal based channel estimation for WCDMA systems
TL;DR: It is demonstrated by computer simulations that the proposed method can estimate the channel parameters more accurately, and the performance of the RAKE receiver is improved especially at high and varying vehicular speeds.
Posted Content
A New Frame Synchronization Algorithm for Linear Periodic Channels with Memory -- Full Version
Oren Kolaman,Ron Dabora +1 more
TL;DR: This work derives frame synchronization algorithms based on simplifications of the optimal likelihood-ratio test, assuming the channel impulse response is unknown at the receiver, which is applicable to many practical scenarios.
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.