Journal ArticleDOI
Long-range prediction of fading signals
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TLDR
A novel adaptive long-range fading channel prediction algorithm (LRP) and its utilization with adaptive transmission methods are described and results show that long- range prediction makes adaptive transmission techniques feasible for mobile radio channels.Abstract:
It was previously proposed to adapt several transmission methods, including modulation, power control, channel coding, and antenna diversity to rapidly time variant fading channel conditions. Prediction of the channel coefficients several tens-to-hundreds of symbols ahead is essential to realize these methods in practice. We describe a novel adaptive long-range fading channel prediction algorithm (LRP) and its utilization with adaptive transmission methods. The LRP is validated for standard stationary fading models and tested with measured data and with data produced by our novel realistic physical channel model. Both numerical and simulation results show that long-range prediction makes adaptive transmission techniques feasible for mobile radio channels.read more
Citations
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Journal ArticleDOI
Channel estimation for wireless ofdm systems
TL;DR: Techniques are described for efficiently estimating and compensating for the effects of a communication channel in a multi-carrier wireless communication system using the fact that the transmitted symbols are drawn from a finite-alphabet to efficiently estimate the propagation channel.
Journal ArticleDOI
Optimal training for block transmissions over doubly selective wireless fading channels
TL;DR: This work designs low-complexity optimal PSAM for block transmissions over doubly selective channels using a basis expansion channel model and maximizes a tight lower bound on the average channel capacity that is shown to be equivalent to the minimization of the minimum mean-square channel estimation error.
Book
Turbo Coding, Turbo Equalisation and Space-Time Coding for Transmission over Fading Channels
TL;DR: This paper presents a Comparative Study of Turbo Equalisers: The Super Trellis Structure of Convolutional Turbo Codes and the Coded Modulation Theory and Performance.
Book
Turbo Coding, Turbo Equalisation and Space-Time Coding
Lajos Hanzo,T.H. Liew,B.L. Yeap +2 more
TL;DR: This book endeavours to be the first book with explicit emphasis on channel coding for transmission over wireless channels, and systematically converts the lessons of Shannon's information theory into design principles applicable to practical wireless systems in a comprehensive manner.
References
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Journal ArticleDOI
Variable-rate variable-power MQAM for fading channels
Andrea Goldsmith,Soon-Ghee Chua +1 more
TL;DR: There is a constant power gap between the spectral efficiency of the proposed technique and the channel capacity, and this gap is a simple function of the required bit-error rate (BER).
Journal ArticleDOI
Capacity of fading channels with channel side information
Andrea Goldsmith,Pravin Varaiya +1 more
TL;DR: The Shannon capacity of a fading channel with channel side information at the transmitter and receiver, and at the receiver alone is obtained, analogous to water-pouring in frequency for time-invariant frequency-selective fading channels.
Journal ArticleDOI
Capacity of Rayleigh fading channels under different adaptive transmission and diversity-combining techniques
TL;DR: In this paper, the Shannon capacity of adaptive transmission techniques in conjunction with diversity-combining was studied. And the authors obtained closed-form solutions for the Rayleigh fading channel capacity under three adaptive policies: optimal power and rate adaptation, constant power with optimal rate adaptation and channel inversion with fixed rate.
Journal ArticleDOI
Maximum ratio transmission
TL;DR: In this article, the authors present the concept, principles and analysis of maximum ratio transmission for wireless communications, where multiple antennas are used for both transmission and reception, and show that the average overall signal-to-mise ratio (SNR) is proportional to the cross correlation between channel vectors and that error probability decreases inversely with the (L/spl times/K)th power of the average SNR.
Journal ArticleDOI
Rayleigh fading channels in mobile digital communication systems .I. Characterization
TL;DR: In this article, the authors address Rayleigh fading, primarily in the UHF band, that affects mobile systems such as cellular and personal communication systems (PCS) and itemizes the fundamental fading mani.