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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Journal ArticleDOI
Timing and Carrier Synchronization in Wireless Communication Systems: A Survey and Classification of Research in the Last Five Years
TL;DR: In this article, the authors present a comprehensive literature review and classification of the recent progress in achieving timing and carrier synchronization in single-input-single-output (SISO), MIMO, cooperative relaying, and multiuser/multicell interference networks.
Patent
Time and frequency channel estimation in an ofdm system
Afif Osseiran,Andrew Logothetis +1 more
TL;DR: In this paper, a radio channel estimation technique is described for use in a OFDM-based radio communications system, where a block of OFDM symbols is transmitted from multiple antennas over multiple sub-carrier frequencies.
Proceedings ArticleDOI
Secret Key Generation Using Physical Channels with Imperfect CSI.
TL;DR: An analytical expression is provided which relates the channel SNRs and degree of reciprocity to probability of key mismatch and how this affects key reconciliation and secrecy leaking.
Proceedings ArticleDOI
Channel protection: Random coding meets sparse channels
TL;DR: In this article, the authors show that if the channel impulse response is sufficiently sparse, the transmitted signal can be recovered reliably when the channel is changing rapidly, and propose two schemes for the recovery.
Proceedings ArticleDOI
Adaptive pilot utilization for OFDM channel estimation in a time varying channel
TL;DR: The proposed Transmitter architecture could achieve a better bit-error-rate (BER) performance in high mobility Environment and performance comparisons in terms of BER, Average spectral efficiency and PSAM based channel estimation in a Rayleigh fading channel are simulated to demonstrate the effectiveness of this approach.
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.