多用戶分段移位差分混沌鍵控通信方案

張剛; 孟維; 張?zhí)祢U

doi:10.11999/JEIT160795

多用戶分段移位差分混沌鍵控通信方案

doi: 10.11999/JEIT160795 cstr: 32379.14.JEIT160795

基金項目:

國家自然科學基金(61371164)，重慶市杰出青年基金(CSTC2011jjjq40002)，重慶市教育委員會科研項目(KJ130524)

計量
- 文章訪問數(shù): 1284
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- 被引次數(shù): 0
出版歷程
- 收稿日期: 2016-07-26
- 修回日期: 2016-12-30
- 刊出日期: 2017-05-19

Multiuser Communication Scheme Based on Segment Shift Differential Chaos Shift Keying

Funds:

The National Natural Science Foundation of China (61371164), The Chongqing Distinguished Youth Foundation (CSTC2011jjjq40002), The Research Project of Chongqing Educational Commission (KJ130524)

摘要

摘要: 為了滿足現(xiàn)代通信的需求，多用戶接入技術(shù)是近年來混沌通信的一個重要發(fā)展趨勢。為了進一步改善現(xiàn)有多用戶混沌通信方案的誤碼性能，該文提出一種多用戶分段移位差分混沌鍵控(MultiUser Segment Shift Differential Chaos Shift Keying, MU-SSDCSK)通信方案。該方案根據(jù)傳輸?shù)挠脩魯?shù)，將MU-SSDCSK中的參考信號等分成m個信號段，再將這m個信號段進行移位，并配以不同的Walsh碼，形成相互正交的信息攜帶信號。文中推導了該系統(tǒng)在加性高斯白噪聲信道中的理論誤碼率公式并進行了仿真。仿真結(jié)果表明，該文提出的MU-SSDCSK方案能有效改善系統(tǒng)誤碼性能，在混沌通信領(lǐng)域具有一定的應(yīng)用前景。
- 多用戶 /
- Walsh碼 /
- 分段移位 /
- 傳輸速率 /
- 比特誤碼率
Abstract: In order to meet the demand of modern communication, multiuser access technology is an important development trend of current chaotic communication. To improve the Bit Error Rate (BER) performance of the existing multiuser chaotic communication schemes, a MultiUser communication scheme based on Segment Shift Differential Chaos Shift Keying (MU-SSDCSK) is proposed. According to the users number in transmission, the reference signal of MU-SSDCSK is divided intom segments, which are then shifted and matched with different Walsh codes that therefore can make the information-bearing signals orthogonal to each other. The theoretical BER formula of this new scheme is derived in Additive White Gaussian Noise (AWGN) channel. The simulation results show that the proposed scheme can effectively improve BER performance, and has certain application prospect in the chaotic communication field.
- Multiuser /
- Walsh codes /
- Segment shift /
- Transmission rate /
- Bit Error Rate (BER)

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參考文獻(20)

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