摘要: |
针对非协作通信中平坦衰落条件下单天线接收两路MSK混合信号分量的幅度估计问
题,提出了一种基于max-min思想的幅度盲估计算法。该算法采用混合信号幅值序
列中多个极大极小幅值的估计值来进行混合信号分量的幅度估计,并采用加窗局部极值平均
的方法来获得多个极大极小幅值的估计值。仿真结果表明:在信噪比大于10 dB条件下
,该
算法
对MSK混合信号幅度估计较为准确,并且该算法对混合信号分量功率比和相对时延差的变化
具有较强的鲁棒性,具有不需要数据辅助、计算量较小的优点,能够满足后续盲信号处理的
需要。 |
关键词: 非协作通信 MSK混合信号 幅度估计 平坦衰落信道 单天线 |
DOI: |
|
基金项目:泰山学者建设专项基金资助项目 |
|
An Amplitude Estimation Algoritm for Co-frequency Mixture with Single Antenna |
XU Bin,RUI Guo-sheng,Chen Bi-ran |
(Electronic Information Engineering Department,Naval Aeronautical and Astr
onautical University, Yantai 264001, China;Navy Military Representative Office in Chengdu, Chengdu 610036, China) |
Abstract: |
For noncooperative communication,an amplitude estimation a
lgorithm is proposed for two-way MSK mixing signals with single antenna u
n
der flatfading channel. Legions of maximum and minimum amplitudes of the mixtu
r
e are obtained by caculating partial mean of maximum or minimum values within a
window and applied to estimate amplitudes of signal components. Simulation resu
lts show its good performance when SNR is greater than 10dB and perfect robust p
erformance for the changes of the power ratio between signal components and diff
erence of timedelay. As a nonpreamble aided algorithm with low
er complexity,it is significant for following blind processing. |
Key words: non-cooperative communication MSK mixture amplitude es
timation flat-fading channel single antenna |