Patent ID: 9686069
Date: 2017-06-20
CPC Classifications: H04B,H04J,H04L

Claim:
1. A signal demodulation method implemented in a receiver, comprising: receiving a radio frequency (RF) signal representing a combination of a desired signal and interference; estimating, using a reference signal from the received RF signal, an estimated impairment covariance matrix; determining an interference correlation metric by computing a value of determinant of the estimated impairment covariance matrix; selecting an interference correlation threshold based on at least one of a type of the reference signal used for estimating the estimated impairment covariance matrix, modulation used by the desired signal and an estimate of a signal to interference plus noise ratio (SINR); determining, by comparing the interference correlation metric with the interference correlation threshold, whether or not to use interference rejection combining (IRC) for demodulation of the desired signal; and selecting, based on a value of determinant of an estimated desired signal covariance matrix, a signal detection algorithm for use by the receiver during demodulation of the desired signal.