COMBINED TWO CRITERIA
OPTIMIZATION WITH CONSTELLATION ROTATION FOR LINEAR MIMO PRECODERS
V. P. Volchkov, A. A.
Moscow Technical University of Communications and
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
Keywords: MIMO system, linear precoder, rotation of symbol constellation, interference robustness, capacity.