A subspace tracking algorithm for space-time multi-user detection
Zhang Jini · Journal of Xidian University · 2005
From the foundation of the investigation of the multi-user detection algorithm based on the subspace method, we propose a multi-user detection technology combined with array antennas reception—space-time multi-user detection technology to increase the capacity of the DS-CDMA system and improve the performance of the SNR and the bit error rate(BER). This technology makes it possible to apply multi-user detection to the overloaded system and increase the system capacity. The improved newOPAST algorithm is applicable to the blind space-time multi-user detector. Simulation results show that this scheme provides the output SNR and BER similar to those by the classic algorithm with stable global convergence and less computation complexity.