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LTE上行信道的八天线干扰抑制合并技术
董庆龙,李亚麟,倪卫明
0
(上海贝尔股份有限公司,上海 200070;复旦大学 信息科学与工程学院,上海 200433)
摘要:
基于最小均方误差估计准则推导了LTE多天线上行信道的干扰 抑制合并和最大比合并的均衡公式。通过仿真比较,验证了八天线干扰抑制合并接收算法在 有同频干扰情况下的优越性:随着信噪比的增大,干扰抑制合并算法的误码率大幅降低,而 最大比合并算法则形成误码平台;八天线干扰抑制合并性能明显优于两天线性能。LTE在同 频组网时,基站可以采用八天线接收的干扰抑制合并技术以提高上行链路的抗干扰性能。
关键词:  多输入多输出  干扰抑制合并  最大比合并  抗干扰性能
DOI:
基金项目:国家科技重大专项(2010ZX03002-003)
8-antenna interference rejection combining technology for LTE uplink
DONG Qing-long,LI Ya-lin,NI Wei-ming
()
Abstract:
The equalization formulae of IRC(Interference Rejection Combing) and MRC(Max Rat io Combiner) are provided based on the minimum mean square error(MMSE) criteria in LTE uplink with multi-antenna . By simulations and comparison, the advantages of 8-antenna IRC arithmetic with the same frequency interference are validated: with the Signal-to-Noise Rati o(SNR) increasing, the Bit Error Rate(BER) of 8-antenna IRC becomes much lower, but t he BER of 8-antenna MRC becomes flat; 8-antenna IRC is much better than 2-anten na IRC. When organizing networks with the same frequency, the LTE base station can use IRC technology with 8 receiving antennas to improve the anti-interferenc e performances for the uplink.
Key words:  multiple input multiple output(MIMO)  interference reje ction combining(IRC)  max ratio combiner(MRC)  anti-interference performance
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