Abstract
Orthogonal Frequency Division Multiplexing (OFDM) is a high data-rate communica- tion system. In this high data-rate communication system, a popular problem such as IQ imbalance occurs in this system front-end. In order to remove the e®ect caused by such circuit components, we need to take some compensation schemes urgently. There have been many compensation schemes proposed, by better performance and a simple technique, we take the time-domain LMS compensation scheme into account. Comparing with the single-input single-output (SISO) OFDM system, multiple-input multiple-output (MIMO) OFDM system has great advantages and take more concerns applying in next communication generation. In our thesis, we take the time-domain LMS compensation scheme combing with the MRC algorithm for our simulation which include one transmitted antenna and two received antennas. Simulation will show great improvement dealing with the IQ imbalance for time-domain LMS compensation scheme and a great promotion for MIMO OFDM system to SISO OFDM system. Index-OFDM,MIMO, time-domain LMS, MRC, IQ imbalance.