摘要
针对3G移动通信中的某些特殊应用场景,如信号侦查、定位及信号的智能干扰等需要对通信信道进行快速准确估计的要求,在B.Steiner信道估计法的基础上,提出一种新型的改进方法。该方法首先对B.Steiner信道估计结果进行门限处理,然后对保留径的响应进行最大比增益修正,从而进一步减弱噪声对系统的影响。在TD-SCDMA的协议测试模型case3条件下进行仿真,结果表明,在不明显增加算法复杂度的前提下,同一误码率时该方法所需输入信噪比降低了1~2 d B。
Some specific application of the 3G communication,such as signal detection,location and intelligent signal interference,need quick and accurate channel estimation. Based on B. Steiner algorithm,an improved channel estimation algorithm is proposed. In this method,the result of B. Steiner estimation is processed by a setting threshold firstly,and then the rest of them is modified by the maximum proportion. Thus,the influence of noise is further weakened. Simulation experiment is carried out under the condition of specific test model case 3 of TD-SCDMA system,the results demonstrate the SNR of the input signal that the system required reduces 1 ~ 2 d B with a certain bit error rate. In addition,this method does not increase the computation.
出处
《微型机与应用》
2017年第7期67-69,73,共4页
Microcomputer & Its Applications
基金
国家自然科学基金委员会与中国工程物理研究院联合基金(U1530143)
