A low complexity optimum multi-user receiver for maximizing the BER performance for DS-CDMA systems

A new transformation matrix technique for reducing the complexity of a multiuser receiver for DS-CDMA system is presented. The reduction in complexity of multiuser receiver would result in better bit error rate (BER) performance. The reduction in error rate would allow us to maximize the data throughput of a communication network by minimizing the packet loss. Our simulation results demonstrate that the proposed technique successfully reduces the computational complexity of an optimal multiuser receiver for the DS-CDMA systems. The complexity of the proposed technique is not polynomial in the number of users, but it still gives comparatively reduced complexity that can be used to achieve optimum performance in terms of a reduced BER and increased network data throughput.