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In recent years , 3G has become the worldwide communications research focus , TD-SCDMA system as a third generation mobile communication system, a standard , more and more attention . Early 2009 in China TD-SCDMA license issuance, the TD-SCDMA base stations and terminal products have already entered a comprehensive design. Since TD-SCDMA and WCDMA and CDMA2000 is a relatively late start , so for the system design and testing of the terminal have been lagging behind the other two criteria. In the commercial launch of 3G , before the eyes of the communications industry to invest in the long evolution of 3G -related technologies. In this paper, MIMO and OFDM technology, history , current research , technology advantages and disadvantages respectively are introduced, and terminal testing technology to do a series of overview of the basic principles of MIMO and OFDM , MIMO channel capacity for doing a comparative analysis , analysis the OFDM parameters established MIMO-OFDM system model, and discusses the characteristics of MIMO-OFDM systems and its applications in communications systems . In this paper, TD-SCDMA terminal conformance testing departure , using existing instruments of practical value to build a terminal test hardware environment that can support the protocol specified in the transmitter and receiver performance tests . To include MIMO-OFDM technology TD-LTE test system parameters as indicators , with the traditional test solutions were compared after selected based on software radio technology as a terminal test solutions , the platform has strong flexibility and openness , ease of after the terminal test system upgrades . In ADC, DAC, DSP, FPGA as the core platform , to build a terminal test software radio platform, which includes signal generation and signal analysis in two parts , the main research digital intermediate frequency of the signal modulation and demodulation process , and proposed terminal test system test project execution and data processing software processes.
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