CDMA和WCDMA系统室外邻频干扰问题研究  

Study of Adjacent Interference between CDMA and WCDMA in Outdoor Environment

作　　者：吴常国[1] 姬国庆[1] 姜光兴[1] 

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003

出　　处：《南京邮电大学学报（自然科学版）》2007年第6期49-53,共5页Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition

基　　金：国家自然科学基金重点项目(60432040);江苏省自然科学基金项目(BK2002031)资助项目

摘　　要：分析了由于CDMA(码分多址)系统与WCDMA(宽带码分多址)系统频段上相邻所造成的系统性能影响,建立了一个采用接收机灵敏度指标作为系统性能恶化和干扰程度的衡量指标的系统间邻频干扰模型。在评估灵敏度与干扰之间的影响基础上,对系统共存所需的空间隔离度进行计算,并且在CDMA和WCDMA共站址的环境下进行验证,实验结果有效的验证了理论仿真模型。结果表明通过适当降低接收机灵敏度,在满足相关协议要求的情况下,能够有效的减少系统间干扰的影响,达到系统共站址和共存的目的。该模型也可以适用于其他2G通信系统与WCDMA系统共存的干扰分析。This paper evaluates the effect of the adjacent interference between CDMA and WCDMA system. A useful model is presented which uses the receiver sensitive deterioration as the key parameter to evaluate the system interference. Based on the interference analysis, the system isolation value is counted. Then the paper presents measured performance and interference data forCDMA and WCDMA in a co-site （co-located） outdoor environment. The simulating results demontrate the efficiency of the interference analysis model and show that, with proper isolation and careful planning, both systems can co-exist in a co-site environment. In addition,This interference model could be applied to coexist analysis other 2G and WCDMA systems.

关 键 词：邻频干扰 码分多址 WCDMA 

分 类 号：TN914.53[电子电信—通信与信息系统]