Group-Wise Joint Detection for Dual Rate TD-SCDMA Systems

In this paper, a group-wise joint detection (JD) algorithm is proposed for dual rate time division - synchronization code division multiple access (TD-SCDMA) systems. The proposed algorithm first groups users based on their data rates and then deals with them group by group starting from the group of high data rate users (HRUs). Simulation results illustrate that compared to conventional JD algorithms, the proposed algorithm can improve the performance of low data rate users (LRUs) significantly while having similar performance for HRUs, with negligible computational complexity increase. It is worth mentioning that the proposed group-wise JD algorithm can be easily extended for the application in multi-rate TD-SCDMA systems. ? 2011 IEEE.EI