A posterior block iterative decision feedback detector

A novel posterior detector for TDMA wireless communication systems is proposed in this paper. The whole detector is divided into a preliminary detector and a posterior detector. Jointly using preliminarily detected data and estimated channel impulse response, the individual path interference can be calculated and the individual path signals can be extracted. Then, maximal-ratio combining (MRC) technique is used to combine these signals to get more reliable data. Furthermore, a soft decision is executed and its output is sent back to the posterior detector to improve the system performance successively. Computer simulation results demonstrate that the proposed posterior detector achieves diversity gains in inherent multipath environments and BER performance becomes better as the iteration time increases.