In Td-scdma Base Station Rf Receiver Performance Analysis

After honeycomb mobile communication appeared, mobile technologies develop very quickly. Following the first generation analog mobile communication systems, such as TACS and AMPS, and the second generation digital mobile communication systems, such as GSM and cdmaONE, the third generation mobile communication systems, 3G for short, are coming to people's lives. 3G mainly employ Code Division Multiple Access technology. Its main standards are TD-SCDMA, WCDMA and CDMA2000. Due to the lower cost of TD-SCDMA to achieve satisfactory results, and the most important, it is our contry's fisrt complete mobile standard; it is currently the hottest 3G standard in China.Now our group are researching TD-SCDMA, and my emphasis is on the performance of base station in TD-SCDMA. Transceiver block (TRXB) is an important part of base station transceiver system, and its performance will directly impact base station and the whole system. According to the Third Generation Partnership Project(3GPP), noise figure, 1dB compression point, single tone desensitization, third order intermodulation, selectivity, spurious responses of base station transceiver system in TD-SCDMA are researched in three ways in this article.1. Particularly analyse the principles and the calculations of each index in the theoretics, mathematics and graphs. Combining theory with practice, analyse each index about the receiver in TRXB of base station transceiver system.2. Bring forward the measuring methods and attentions of each index in engineering. According to them, test results of TRXB are listed.3. The ways of improving each index are given, based on the principles, testing results and ADS simulations.This article is in favor of improving the RF performance of not only digital receivers in TD-SCDMA base station but also other receivers.