Abstract：This paper presents four data-selection schemes based on chip-matched filter for the multiuser receiver in multipath CDMA channels, and studies the impacts of these schemes on Multiple-Access Interference (MAI) and Inter-Symbol Interference (ISI). Then, it presents the Least Mean-Square (LMS) and Least-Square (LS) blind space-time multiuser detection methods both based on the Rosen’s gradient projection, and analyzes the effects of these schemes on the computational complexity of the two detection methods. Finally, a reasonable and realizable method is provided by analyzing the results of the simulations, and this method has the advantages of lowering the computational complexity, accelerating the speed of convergence and improving the detection performance, therefore it is interesting for application.
2002, Vol. 24 
