| The present paper deals with the technique of MIMO, OFDM and space-time code in the next generation of mobile communication. It gives a full introduction of MIMO-OFDM , analyzes three space-time codes and studies the possibility of a system which combines space-time codes with MIMO-OFDM. The paper consists of three parts:Firstly, the paper analyses the space-time channel model and space-time signal systematically, as space-time codes, involving the combination of space and time, belongs to the technology of dealing with space and time. It analyzes three kinds of space-time code technology, discussing its construction and the method to translate and edit codes.Secondly,the paper introduces MIMO technology and OFDM technology, analyzing the principle of OFDM, its advantages and disadvantages and system capacity of MIMO in details. It presents the communication system of combining MIMO with OFDM and analyzes its capability.Finally, By simulation we analyses the performance of the communication system which combines MIMO-OFDM and space-time codes in different channel. |
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