Low complexity CMC-CDM based wireless LAN with different interleaving approaches

This paper studies the performance of a new coded multi-carrier code-division multiplexing (CMC-CDM) scheme in a wireless LAN (WLAN) context, employing different interleaving approaches. It is found that for high data rate transmission the proposed system has the potential to achieve power efficient PER performance using low complexity receivers. For example, equal gain combining (EGC) may be used effectively with an appropriate choice of bit, symbol or chip interleaving. The results show that EGC can be advantageously deployed without chip interleaving, where considerable performance improvement is realized. For delay-sensitive applications, where interleaving is not affordable, the proposed system can provide more than 5 dB improved power efficiency compared to the IEEE.11a standardized system.