The Research And Implementation Of MIMO Wireless System Based On Layered Space-Time Block Code

Multiple Input Multiple Output (MIMO) technology has become one of the key techniques in the study of the next-generation mobile communication system, for this technology under the situation of the system bandwidth invariable, Its capacity and spectrum utilization can fold ascension. But MIMO system also brings a huge capacity but at the same time, it increases the difficulty of signal detection in the receiver.This paper starts with the model specification of the MIMO system, and then discusses the MIMO system capacity, mainly focus on the research and simulation of the MIMO technology of three kinds of commonly used space coding technology: Space-time block coding (STBC), Layered space-time coding (V-BLAST), and Layered space-time block coding (LSTBC). Finally, comparison of the simulation curves of V-BLAST-OFDM, LSTBC-OFDM and STBC-OFDM system is made in MATLAB.Finally, with the hardware platforms of DSP+FPGA, based on QR Decomposition in MIMO Wireless communication system detection algorithm of layered space-time codes have finished. It mainly includes two parts:the matrix decomposition algorithm that based on ADSP-TS201, and the decoding module design and implementation that based on AlteraEP2AGX260. After that, this paper made the detailed description of the algorithm processes as well as hardware configuration. At last, the accomplishment of each module has finished too.