LTE共存干扰研究
首发时间:2009-07-08
摘要:LTE为了满足上下行的高速数据速率要求,采用OFDM作为其核心传输技术。本文针对LTE系统资源分配的特点,分析了两个LTE系统邻频共存时,被干扰系统受到的系统内和系统间的干扰。介绍了共存干扰研究中用到的传播模型,ACIR确定的方法,功率控制算法,干扰计算方法等关键技术。通过与单系统吞吐量的比较,说明共存干扰对系统性能带来的影响。对不同系统间距的邻频系统共存进行了仿真,给出了为保证系统性能较好应采取的最小隔离度。
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LTE Co-existence Interference Study
Abstract:In order to reach the high data rata, LTE uses the OFDM as the key technolodgy..In this paper, the inter -interference and intra-interference are analysed in interferenced LTE, when there are two LTE operators using the adjacent spectrum, taking the transmission technolodgy into account. The LTE-specific co-existence studies methodology is presented. The key technolodgy in co-existence study, including propagation models, ACIR modelds, power control algorithm and throughput calculation method, are introduced. The performance degradation due to the co-existence is quantified by comparing with single system scenario and the isolations are given for deferent scenarios in order to keep optimal system performance.
Keywords: LTE interference analysis co-existence isolation degree
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No.3372648293012470****
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