Signal detection for space-time block coded MC-CDMA system based on dimension-reduced blind channel estimation
YU Bian-zhang · Journal of China Institute of Communications · 2005
Blind signal detection for a space-time block coded multicarrier CDMA (MC-CDMA) system was considered. A decorrelating filter was applied to the receiving data vectors. Dimension-reduced signal of each user’s odd and even time without multiuser access interference (MAI) were got. Blind channel estimation could be obtained by the rank-one approximation of whitened dimension-reduced data matrix. The complex scalar ambiguity was solved by exploiting the finite alphabets set of user’s transmit information symbol. After estimating the channel response of all users, the least squares algorithm was applied to performing signal detection. Simulation results show the effectiveness of the proposed algorithms.