منابع مشابه
Differential space-time modulation
Space–time coding and modulation exploit the presence of multiple transmit antennas to improve performance on multipath radio channels. Thus far, most work on space–time coding has assumed that perfect channel estimates are available at the receiver. In certain situations, however, it may be difficult or costly to estimate the channel accurately, in which case it is natural to consider the desi...
متن کاملPairwise probability of error for differential space-time modulation over a time-varying Rician channel
The pairwise probability of error for differential unitary space-time modulation for channels with a constant specular component and time-varying diffuse fading is derived in this paper. We consider the case where the channel varies from sample to sample within a symbol according to a first-order Gauss-innovations model. Our previous results are reviewed which show that the effect of the time-v...
متن کاملPerformance of Space-Time Modulation for a General Time-Varying Rician Channel Model
We analyze the performance of trained and differential space-time modulation for channels with a constant specular component and time-varying diffuse fading. We examine the case where the channel varies from sample to sample within a symbol according to a first-order Gauss-innovations model. We show that the effect of the time-varying diffuse channel can be described by an effective SNR that de...
متن کاملCapacity-optimal training for space-time modulation over a time-varying channel
Using a model based on the time-autocorrelation function for time-varying MIMO channels, we find a lower bound on capacity for trained modulation, and find the training signal, training power, and length of training signal which maximize this bound. An approximation for the training frequency which maximizes the bound at high SNR is given for Jakes’ fading model. The capacity for differential u...
متن کاملSpace-Time Polar Coded Modulation
The polar codes are proven to be capacity-achieving and are shown to have equivalent or even better finite-length performance than the turbo/LDPC codes under some improved decoding algorithms over the additive white Gaussian noise (AWGN) channels. Polar coding is based on the so-called channel polarization phenomenon induced by a transform over the underlying binary-input channel. The channel p...
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ژورنال
عنوان ژورنال: IEEE Transactions on Vehicular Technology
سال: 2017
ISSN: 0018-9545,1939-9359
DOI: 10.1109/tvt.2017.2674689