Research Of Channel Estimation In MIMO System And Implementation Of Transmitter Based On DSP

In the time of wireless communication has become essential part to daily life for people, the use and development of the wireless information channel earned unprecedented attention. MIMO system has become the key point of various institutions and manufacturers for researching due to its high spectrum efficiency and high data transfer rate. This thesis is about the performance analysis result of 2*2MIMO system transmitter, which applied to TMS320C6713DSK, and focuses on channel estimation algorithm in MIMO system,Based on applying transmitter of 2*2MIMO system to TMSC6713DSK, the designed system can be simulated, tested and analyzed. The test results show that the performance of MIMO systems is. better and has lower error rate than SISO system under the same SNR, also verify the accuracy of of the system.MIMO system communication system can increase the capacity and spectrum efficiency twice without increasing the bandwidth, meanwhile, it will lead the information channel to become more complex. Therefore, the channel estimation has become an indispensable part to make the recover data of receiver more accurate. The accuracy of channel estimation determines the correct rate directly. In this thesis the algorithm of the least squares and minimum mean square error estimation is analyzed theoretically and the hardware is applied under the environment of Rayleigh flat fading channel.In addition, this thesis presents a comparative analysis result of wireless channel simulative models, focusing on introducing the Rayleigh channel performance and simulation methods and gives the simulation results JakesModel and ZhengModel.