MC-CDMA bit error probability and outage minimization through partial combining

Abstract

This work addresses the performance evaluation, in terms of bit error probability (BEP) and bit error outage (BEO), for the down-link of multi-carrier code division multiple access systems. A partial combining technique depending on a parameter adapted to the system load and the mean signal-to-noise ratio is proposed to counteract both interference and thermal noise and optimized to minimize both BEP and BEO. The performance is improved with respect to previously known techniques such as maximal ratio combining, orthogonal restoring combining and equal gain combining.