Title :
Estimation of Laplacian Symbols for Analog Transmission Over MIMO Channels
Author :
Suarez-Casal, Pedro ; Fresnedo, Oscar ; Castedo, Luis
Author_Institution :
Dept. of Electron. & Syst., Univ. of A Coruna, A Coruña, Spain
Abstract :
The MAP and MMSE estimation of Laplace-distributed symbols transmitted over multiple-input multiple-output channels is studied. This is an important problem in analog joint source channel coding with spiral mappings, where the probability density function of the transmitted symbols approximates a Laplace distribution in the low SNR regime. Simulation results are presented to illustrate the suitability of these estimators in uncoded and coded analog communications.
Keywords :
MIMO communication; combined source-channel coding; least mean squares methods; maximum likelihood estimation; statistical distributions; wireless channels; Laplace distribution; Laplace-distributed symbol transmission; Laplacian symbol estimation; MAP estimation; MIMO channel; MMSE estimation; analog joint source channel coding; analog transmission; coded analog communication; low SNR regime; maximum a posteriori estimation; minimum mean-squared error estimation; multiple-input multiple-output channel; spiral mapping; transmitted symbol probability density function; uncoded analog communication; Channel coding; Channel estimation; Estimation; Laplace equations; MIMO; Signal to noise ratio; Analog joint source channel coding; MAP; MIMO; MMSE; analog joint source channel coding; estimation;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2015.2485216
