Joint Detection Based on MMSE Decision Feedback Equalization with Interference Cancellation
Zhou Huayu, Hui Tang, Qin Zhang · 2009
MMSE-DFE (Minimum Mean Square Error-Decision Feedback Equalization) is a sliding-window decision feedback equalization method. This paper first applies MMSE-DFE into joint detection algorithm for TDD-CDMA (Time Division Duplex-Code Division Multiple Access). It has the low complexity compared with MMSE-BDFE (Minimum Mean Square Error-Block Decision Feedback Equalization) based joint detection. MMSE-IC (Minimum Mean Square Error-Interference Cancellation) is an efficient detection algorithm in V-BLAST. To adopt the advantages of MMSE-IC, we introduce the interference cancellation into the MMSE-DFE based joint detection. By the aid of interference cancellation, the performance of the MMSE-DFE based joint detection is improved. The experiments show that the performance of the proposed joint detection algorithm has the better performance than the conventional MMSE-BDFE based joint detection.