Improved Analysis of Co-Channel Interference Suppression for WHT-STC-OFDM Systems

OFDM technology combined with STC has been used widely in modern communication systems, due to offering many advantages such as improving system capacity. Meanwhile it faces the mutual interference, such as CCI, which generated by multi-antenna transmitting at the receiver. Based on those advantages coming from the combination of STC-OFDM with WHT and the combination of STC-OFDM with ABF, an algorithm is proposed to suppress co-channel interference. Theoretical analysis and computer simulation showed the proposed algorithm could improve Symbol Error Rate performance and suppress CCI in STC-OFDM communication systems.

I INTRODUCTION

It is expected that future wireless communication standards would introduce multiple antenna to improving system performance including increasing capacity and reliability. Recently, Multiple Input Multiple Output (MIMO) has been extensively studied for high transmission data rate and spectrum efficiency required for the 4^th generation mobile communication systems.