An Efficient Linear MMSE Receiver for Wireless Ad Hoc Networks
Recent works on ad hoc network study have shown that achievable throughput can be made to scale linearly with the number of receive antennas even if the transmitter has only a single antenna. In this paper, the authors propose a non-parametric linear Minimum Mean Square Error (MMSE) receiver for achieving further gain in performance when the Channel State Information at Receiver (CSIR) of interferers is imperfect. The key feature to make their approach effective is to exploit the autocorrelation of the received signal. In fact, by incorporating the desired channel information on top of the observations including interference and noise only, the proposed method achieves large fraction of the optimal MMSE transmission capacity without transmission rate loss.