MIMO Ad Hoc Network Performance in the Presence of Co-channel Interference

Abstract

In this paper MIMO ad hoc wireless network performance in terms of signal-to-interference-plus-noise-ratio (SINR) for two physical layers models is considered. We analyze and discuss the performance of MIMO spatial multiplexing with dominant eigenvalue transmission, when the the beamforming weights are chosen as 1) dominant eigenvector, and 2) adaptive weights that adjusted to instantaneous interference scenario. Comprehensive analytical analysis of SINR in output of a receiver node for a mentioned transmision schemes in the presence of interferer nodes are done. We show that with adaptive beamforming approach the interferer nodes signals can be significantly suppressed achieving higher network performance. The simulation result confirm our analysis.