Research Of MIMO Technology And Development Of Its Platform

The MIMO can increase the channel capacity and improve the quality of wireless communication greatly without expanding extra bandwidth. At present, most studies on the corresponding algorithms of MIMO are restricted within theory research and computer simulation, which are short of test through the real channel. So it is necessary to establish a simulation and test platform of MIMO system, which is used to verify the correction and reliability of some algorithms. This paper works just for that purpose.First, this paper introduces the channel module, channel capacity and space time block code theory of MIMO system. Then, the circuit platform, built with chips supporting IEEE802.11n protocol, was designed and connected with high speed A/D and D/A converters to complete high speed signal transceiver in wireless channel. At last, a lot of datum were tested and analyzed on the multi-antenna platform in different scenes, antennas distance, which can reduce channel correlation effectively, was got, and the good characteristics of the multi-antenna platform were verified simultaneously.