COMBINED TWO CRITERIA OPTIMIZATION WITH CONSTELLATION ROTATION FOR LINEAR MIMO PRECODERS

 

V. P. Volchkov, A. A. Shurakhov

Moscow Technical University of Communications and Informatics (MTUSI)
 

The paper is received on December 12, 2013

Abstract. The synthesis of combined two-criteria algorithms for MIMO linear precoders is presented. The first criterion of these algorithms is a maximization of capacity of MIMO system, the second criterion – maximization of distance between points of signal constellation at output of MIMO channel. The results of algorithms simulation are provided. For MIMO-8x8 and MIMO-4x4 configurations combined two-criteria algorithms have correspondingly 17 dB and 14 db gain in BER versus well-known one-criterion algorithms.

Keywords: MIMO system, linear precoder, rotation of symbol constellation, interference robustness, capacity.