Interference canceling characteristics of diversity reception with least‐squares combining—MMSE characteristics and ber performance
Interference canceling characteristics of diversity reception with least‐squares combining—MMSE characteristics and ber performance
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最小二乘组合分集接收干扰消除特性——MMSE特性与误码率性能
DOI：
10.1002/ecja.4410750610
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
H. Suzuki
中科院分区：
文献类型：
--
作者：
H. Suzuki
本文从理论上讨论了最小二乘组合分集接收的几个特点。最小二乘组合是利用最小二乘方法使组合信号与参考信号的误差最小化。首先在期望信号和干扰信号相互独立的假设下推导出复系数值和最小均方误差（MMSE）。将一般解应用于双支路分集接收，得到了确定组合信号CNR的显式公式。
This paper discusses theoretically several characteristics of diversity reception with least-squares combining. Least-squares combining minimizes the combined signal error from a reference signal by the least-squares method. Values of complex coefficients and resulting minimum mean-square error (MMSE) are derived first on the assumption that the desired and interference signals are mutually independent. The general solutions are applied to two-branch diversity reception, and an explicit formula that determines the CNR of the combined signal is obtained.
The diversity performance is discussed from two aspects: signal combining and interference canceling. The discussions show that: (i) maximal ratio combining is achieved if there is no interference; (ii) if there is a single interference source, the interference can be canceled completely and one branch signal reception performance is obtained; and (iii) if there are two or more interference sources, the interference cannot be canceled completed and the diversity performance degrades severely. Furthermore, computer simulations determined the instantaneous CNR distribution functions and average BER performance characteristics.