摘要
提出一种用匹配滤波器作为SIR(信干比,Signal to InterferencePowerRatio)估计方法的SIR加权后检测联合分集方法,估计和利用SIR作为加权因子以补偿严重的信道间干扰。其显著特点是,加权因子SIR是由匹配滤波器的输出和一个简单等式共同估计的,该简单等式表示匹配滤波器的输出与SIR之间的关系。在信道间干扰的环境下,在移动无线瑞利衰落信道中对BPSK信号传输的计算机模拟,证明分集性能的改进。计算机仿真证明,该方法的BER特性大大优于传统的联合分集方法。
The paper proposes to use matching filters as the SIR(single interference ratio) weighted postdetection conversing and diverging method of the SIR assessment method, SIR is estimated and use, as the weight factor to compensate the severe cochannel interference. The most distinctive feature of the proposed method is that the weight factor (SIR) is estimated by both the matching filter output and the simple equation. The simple equation expresses the relationship between the matching filter output and the SIR. In the environment of cochannel interference, simulation is made of the BPSK signals in the fading channel at the mobile radio terminal. It proves that the improvement of the converging and diverging performance is positive and is better by far than the conventional method.
出处
《中国铁道科学》
EI
CAS
CSCD
北大核心
2003年第5期70-74,共5页
China Railway Science
基金
国家自然科学基金项目(69971002)
关键词
移动通信
信道间干扰
分集
匹配滤波器
Mobile communication
Co-channel interference
Diverging and converging
Matching filter
