A Transmit Processing Scheme Combined BLAST and Eigenbeamforming with Variable Rate Allocation
Hu Jie① Xie Xian-zhong② Yang Yan-ling③
①(Engineering College, South China Agriculture University, Guangzhou 510642, China) ②(Key Lab of Mobile Communications, Chongqing University of Posts and Telecommunications, Chongqing 400065, China) ③(Guangdong Planning and Designing Institute of Telecommunications Co.Ltd, Guangzhou 510630, China)
Abstract：Conventional Bell-labs Layered Space Time (BLAST) receivers based on ZF or MMSE algorithm are of great complexity which can not be utilized in the mobile. This paper proposed a transmitter design which combined BLAST and eigenbeamforming with multiple beams pointing to orthogonal directions along the eigenvectors of the channel’s correlation matrix, and with variable rate allocation under certain bit error rate requirement. In this technique, layered space–time pre-processing at the transmitter with a simplified receiver at the mobile station requires only simple signal processing.
2008, Vol. 30 
