摘要
针对在实际应用过程中,变换域通信系统的发射端和接收端电磁环境不相同而导致的收发两端出现基函数不一致的情况,对一种新的CASK算法进行了仿真。根据CASK算法和CSK算法以及双极性算法不同干扰、不同噪声和不同收发不一致比例的情况下系统误码率和理论误码率的对比研究,可以发现,虽然在理想情况下,三者差距不大,然而当收发不一致的比例逐渐上升时,CASK算法的传输性能下降较慢,可以进行正常传输,且其传输性能较双极性调制和CSK调制分别提高2 d B和1 d B,具有良好的抗不一致性能,具有良好的应用前景。
To solve the spectrum mismatch problem in the practical application caused by the different electromagnetic environment at transmitting end and receiving end, this paper performs the simulation for a new CASK algorithm. By studying the theoretical and simulated system BER （bit error rate） in different interception, noise and mismatch ratio of ＂bipolar algorithm＂, CSK and CASK,it can be found that the gap between three algorithms is not big in the ideal condition. But when the ratio of spectrum mismatch increases gradually ,the transmitting performance of CASK algorithm degrades slowly, so this algorithm can perform normal transmission. The transmitting performance of CASK algorithm is higher than bipolar algorithm by 2 dB and CSK by 1 dB,so CASK algorithm has a high anti-mismatch capability,and it has a profound application prospect.
作者
赵正阳
孙志刚
ZHAO Zheng-yang SUN Zhi-gang(The 54th Research Institute of CETC ,Shijiazhuang Hebei 050081 ,China)
出处
《无线电通信技术》
2017年第1期56-59,共4页
Radio Communications Technology
基金
国家高技术研究发展计划(863计划)(2013AA122105)
关键词
变换域通信系统
CASK
收发不一致
自适应
抗干扰
transform domain communication system （TDCS）
CASK
mismatch of Tx and Rx spectrums
self-adaptation
anti -interference
