关键词: 多输入多输出, 垂直分层空时编码, 最大似然算法, 最小均方算法, 现场可编程门阵列

Abstract: The paper presents an FPGA implementation of various V-BLAST detection algorithms,such as Maximum Likelihood,Zero Forcing and Minimum Mean Squared Error.Firstly,the MIMO V-BLAST system structure,the mathematicalmodels and a variety ofreceiverdetection algorithms are studied in detail.Then the characteristic and performance of typical algorithms and focus on using the Verilog hardware description language are analyzed to implementthe V-BLAST system architecture and the three detection algorithms on the Xilinx's Vertex4-VC4VSX55 FPGA.Ultimately,simulation results are compared with each other in terms of complexity and performance.Simulation analysis shows that ML has the best performance and the greatest complexity;ZF has lower complexity and a larger gap from the performance of ML;MMSE's complexity is a litterbiggerthan ZF algorithm with significantly improved performance.

Key words: Multiple-Input Multiple-Output(MIMO), Vertical-Bell Laboratories Layered Space-Time (V-BLAST), Maximum Likelihood(ML), Minimum Mean Square Error(MMSE), Field Programmable Gate Array(FPGA)