TD-LTE与WCDMA系统共存的干扰研究

摘要

WCDMA作为3G制式之一,已在中国成功商用.TD - LTE是TD - SCDMA的长期演进,未来也将启用.两种系统在同一地区的共存必将造成两种系统性能的退化.用最小耦合损耗法( MCL,Minimum Coupling Method)对共存的干扰进行了分析,计算出了隔离要求,并给出了能有效降低系统间干扰的天线配置方法.%WCDMA,one of the 3G standards, is commercially operated in China successfully. TD -LTE, as the evolution of TD - SCDMA, will be operated in the future. Therefore, the two systems may coexist in some area. Accordingly, the inter - system interference caused by coexistence would degrade the performance of both. In this paper,minimum coupling loss ( MCL) method is adopted to analyze the coexistence interference. We also calculate the isolation requirements, and investigate the antenna installation method,which can reduce the intersystem interference effectively.