Non-Regenerative Multicarrier MIMO Relay Communications Based on Minimization of Mean-Squared Error

Y. Rong
2009 2009 IEEE International Conference on Communications  
In this paper we propose non-regenerative multicarrier multiple-input multiple-output (MIMO) relay techniques that minimize the mean-squared error (MSE) of the signal waveform estimation. We establish the closed-form optimal precoding matrices at the source and relay nodes in the absence of the direct source-destination link. Interestingly, we show that the proposed precoding matrices jointly convert the multicarrier MIMO relay channel into parallel single-input single-output (SISO) relay
more » ... (SISO) relay channels. In order to reduce the computational complexity of the optimal algorithm, a suboptimal precoding approach based on an upper-bound of the MSE expression is developed. Numerical examples illustrate a significant performance improvement of the proposed algorithms over the existing techniques. This full text paper was peer reviewed at the direction of IEEE Communications Society subject matter experts for publication in the IEEE ICC 2009 proceedings 978-1-4244-3435-0/09/$25.00
doi:10.1109/icc.2009.5199225 dblp:conf/icc/Rong09 fatcat:tzevrel4cve4fjtfhaodkcuuwy