Method and System for Communicating Data Wirelessly Using Probabilistic Data Association

摘要

A signal received via a fading channel is decoded in radio frequency receiver by first demodulating the signal to a baseband signal, and serial to parallel converting the baseband signal to a precoded signal. Then, a channel matrix is estimated from the precoded signal, and symbols are detected in the precoded signal using the channel matrix. The decoding uses probabilistic data association. The detecting initializes a probability distribution for each symbol, and selects an ordering in which to update the probability distributions. The probability distribution for each symbol are updated according to the ordering, until a termination condition is reached, and then demapped and parallel to serial converted to estimate a sequence of bits used to generate the signal.

主权项

1. A method for decoding a signal in a radio frequency (RF) receiver with a set of one or more receive antennas, wherein the signal is precoded by means of a precoding matrix and then transmitted over a channel subject to fading, comprising;
demodulating the signal to a baseband signal; serial to parallel converting the baseband signal to a precoded signal; estimating a channel matrix from the precoded signal; detecting symbols in the precoded signal using the channel matrix, wherein the decoding uses probabilistic data association, and the detecting further comprises:
initializing a probability distribution for each symbol;selecting an ordering in which to update the probability distributions; andupdating, according to the ordering, the probability distribution for is each symbol until a termination condition is reached; and demapping and parallel to serial converting the symbols to estimate a sequence of bits used to generate the signal.