On MMSE real-time antenna array processing using fourth-orderstatistics in the US cellular TDMA system

摘要

The antenna array processing problem in the reverse link of thencurrent US digital cellular communication system is studied andnhigher-than-second-order-statistics (HOS) baseband processing isnproposed as a possible candidate solution. The remarkable difference ofnour approach as compared to other existing similar techniques is thenidea of the minimization of the mean squared error using fourth-orderncumulants alone and nonblind criteria. A recursive Jacobi total leastnsquares algorithm is used in the adaptive implementation to mitigate theneffects of high error variance in the estimates of the cumulants basednon sample statistics. The method is shown to be very effective in a fastnfading environment with multiple cochannel interferers