Performance of Multi-Carrier Spread-Spectrum Systems with Spatial Diversity and Pre-Equalization
I. Cosovic, Michael Schnell, Andreas Springer · elib (German Aerospace Center) · 2004
In this contribution, the benefit of applying channel knowledge at the transmitter is investigated for multi-carrier spread-spectrum (MC-SS) systems. Two different MC-SS systems are observed, namely uplink multi-carrier code-division multipleaccess (MCCDMA) and spread-spectrum multi-carrier multiple-access (SSMCMA). The latter system is considered for both down- and uplink transmission. Preequalization as well as spatial diversity techniques based on transmit selection diversity and maximum ratio combining are evaluated as transmit diversity techniques which utilize channel knowledge at the transmitter. It is shown that the considered MC-SS systems can provide very promising performance with low hardware complexity.