Distributed MIMO techniques in wireless sensor networks with relays

In this paper we propose new solution for improving performance of the wireless sensor networks with relay stations, through distributed Multiple Input-Multiple Output implementation, i.e. by creating virtual Orthogonal Space Time Block Coding systems. The considered scheme provides creating virtual 2×1 Multiple Input-Single Output channel. This system besides sensor nodes includes one base station, and one relay station equipped with two antennas, or two relay stations each equipped with a single antenna. The simulation results show that the proposed solution can provide evidently better Bit Error Rate performance.