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
Detection Schemes for Distributed Space-Time Block Coding in Time-Varying Wireless Cooperative Systems
Ho Ting Cheng,T.M. Lok +1 more
TL;DR: The results show that all detection methods, except cooperative maximum likelihood detection, achieve nearly the same BER performance over time-varying channels, unlike the results obtained in (Vielmon et al., 2001) by assuming perfect channel estimation.
Proceedings ArticleDOI
Data detection and soft-Kalman filter based semi-blind channel estimation algorithms for MIMO-OFDM systems
TL;DR: In this paper, pilots are placed on subcarriers for a novel channel estimation at the receiver with Kalman filters, and the OFDM MIMO soft data detector is applied with a reasonable computational cost.
Proceedings ArticleDOI
Motion-Compensated Scalable Video Transmission over MIMO Wireless Channels under Imperfect Channel Estimation
TL;DR: In a high Doppler environment where it is hard to get an accurate channel estimate, the performance of the proposed MC-FGS video transmission scheme is investigated with joint control of the leaky and partial prediction parameters and the UEP.
Proceedings ArticleDOI
Performance analysis of an OFDM system using data-aided channel estimation
TL;DR: The performance of an OFDM system in an unknown time-variant frequency-selective Rayleigh fading channel is analyzed and results show that the pilot symbol spacing and the length of the Wiener interpolator have to be selected jointly according the Doppler spread and the delay spread of the channel.
Proceedings ArticleDOI
Achievable Rates for Pilot-Assisted Transmission over Rayleigh Fading Channels
M.F. Sencan,Mustafa Cenk Gursoy +1 more
TL;DR: If the power of both training and data symbols are adapted, it is shown that achievable rates can further be increased especially at low SNR values.
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.