Turbo space-time receiver by kurtosis maximization for CCI/ISI reduction in cellular wireless communications

Abstract

In this paper, Chi and Chen's computationally efficient fast kurtosis maximization algorithm (FKMA) for blind beamforming and equalization is applied to the design of the conventional cascade space-time receiver (CSTR) for blind co-channel interference and inter-symbol interference (ISI) reduction in cellular wireless communications using antenna arrays. However, the receiver performance is limited as the normalized kurtosis magnitude of the ISI-distorted signal of interest, denoted as gamma, is small. Then a blind turbo space-time receiver (TSTR) is further proposed that applies spatial and temporal processing using FKMA in a cyclic fashion to estimate the desired data sequence. The performance of the proposed blind TSTR is insensitive to the value of gamma, and therefore is superior to that of the blind CSTR. Finally, some simulation results are provided to support the efficacy of the proposed blind TSTR