Joint detection technology based on MMSE-BDFE
Xiao-Yang Liu · Applied science and technology · 2011
In order to eliminate multiplel access interference(MAI) and inter-symbol interference(ISI),joint detection techniques are introduced.On the premise of ensuring the minimum mean square error block linear equalizer(MMSE-BLE) algorithm performance in the case,the MMSE-BLE joint detection algorithm for the computation should be minimized as much as possible.To solve this problem,an MMSE block decision feedback joint detection algorithm(MMSE-BDFE) which decomposes matrix using FFT is proposed.Simulation results show that this joint detection algorithm MMSE-BDFE and MMSE-BLE are basically the same in performance,but the complexity of the former is greatly reduced.Compared to ZF-BLE algorithm,the MMSE-BDFE not only reduces the complexity but also increases the performance.The algorithm can not only reduce complexity but also meet actual need of communication.