Iterative precoding vs decoding in virtual mimo systems with channel mismatching errors

This contribution addresses a mathematical formulation and a comparison in performance of two realistic approaches of cooperation in wireless sensor networks. Tomlinson - Harashima precoding has been used as representative of transmitter cooperation while V-BLAST equalization technique was used as representative for receiver cooperation. The key point of this contribution is that non ideal conditions of carrier synchronization are considered. Recent theory suggests that cooperating at the transmitter results more beneficial than doing it at the receiver. In our hand we will show that, when carriers are not accurate synchronized, receiver cooperation appears to be a more robust selection.