TD-LTE系统中的一种智能天线校准的方法  

The Calibrate Method of Smart Antenna in TD-LTE System

作　　者：张向鹏[1,2] 余建国[1,2] 邹丽红[1,2] 李萌[2] 

机构地区：[1]光纤通信技术和网络国家重点实验室,武汉430074 [2]北京北方烽火科技有限公司,北京100085

出　　处：《电信科学》2012年第3期62-67,共6页Telecommunications Science

基　　金：国家科技重大专项基金资助项目(No.2010ZX03005-001)

摘　　要：智能天线是阵列天线与先进的信号处理技术相结合,形成的同时具有空、时处理能力的天线,是信号处理中的一个重要领域。目前,在TD-LTE系统中,为了降低终端间的同频干扰,同时增加小区边缘用户的吞吐量和覆盖范围,在基站侧引入具有小阵元间距的多天线波束赋形技术。为了保证赋形的正确性和可靠性,天线阵列的校准成为一项关键技术,可以减小阵列各个通道的幅度和相位误差。通过仿真可知,该方案能保证波束赋形的正确性和可靠性。The combination of antennas-array and advanced signal processing technology leads to the appearance of smart antennas,which have the capability of concurrently dealing with signals of space domain and time domain.Research on smart antennas has become a hot spot in the area of signal processing.Currently,in TD-LTE systems,the multi-antennas beamforming technology with tiny array distance is applied to base station（BS）,in order to lower the intra frequency interference between different user equipments（UE）,and to increase the throughput of the UE in the edge of the cells,and enlarge the range of coverage of the cells.To grantee the accuracy and reliability of beam shaping,the adjusting of antennas-array has become a key technology,which can reduce the amplitude errors and phase errors of different tunnels of the arrays.The simulation results show that our proposed scheme grantees the accuracy and reliability of beamforming.

关 键 词：智能天线 信号处理 同频干扰 波束赋形 

分 类 号：TN821.8[电子电信—信息与通信工程]