基于LS码的短波CDMA网络  

HF CDMA Networking Based on LS Code

作　　者：张哲[1,2] 程云鹏[1] 吕成林 

机构地区：[1]解放军理工大学通信工程学院 [2]解放军65043部队

出　　处：《通信对抗》2011年第4期35-40,共6页Communication Countermeasures

摘　　要：在短波通信建链过程采用CDMA技术可使多个台站同时发送建链信息,但同时会产生多址干扰。为此分析了LS码的特性,提出了基于LS码的短波建链波形。首先提出了基于LS码的抗干扰系统模型,研究了LS码设计与生成方法,并根据生成的LS码改进短波建链波形,另外还对改进波形作了相关特性的仿真。最后通过计算机仿真对LS改进短波组网建链波形的抗多址干扰与多径干扰的能力进行了分析。结果表明,采用基于LS码的建链波形比原有的BW0波形具有更好的误码性能,提高了抗多径与抗多址干扰能力。Construction of chain processes in HF communications using CDMA technology enables the construction of more stations simultaneously transmit chain information, but will have multiple access interference. To this end, the paper analyzes the characteristics of LS code, LS code is proposed based on HF waveform construction chain. First proposed the LS code-based anti-jamming system model of the LS code design and generation methods based on LS code to improve HF generated waveform construction chain, also made a correlation to the improvement of the simulation waveform. LS by computer simulation to improve HF network built on the waveform of the anti-chain multiple access interference and the ability to multi-path interference is analyzed. The results show that the LS code-based construction chain BW0 than the original waveform the waveform has better error performance, increased resistance to anti-multipath and multiple access interference.

关 键 词：短波 LS 同步 CDMA 

分 类 号：TN92[电子电信—通信与信息系统]