Asymptotic spectral efficiency of LMMSE multi-user multi-signature MC-CDMA in frequency-selective Rayleigh fading
M.J.M. Peacock, Iain B. Collings, Michael L. Honig · 2004
We present an asymptotic analysis of a multi-signature multi-carrier CDMA communications system. Such a system is suited to scalable data rate services with decentralized control. Specifically, we derive the asymptotic SINR at the output of a multi-user linear minimum mean squared error (LMMSE) receiver and the asymptotic sum spectral efficiency of both the LMMSE and optimal receivers. Simulation studies demonstrate that the asymptotic results closely predict the performance of practical finite systems.