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正交多用戶短參考差分混沌移位鍵控通信系統(tǒng)性能分析

賀利芳 吳雪霜 張?zhí)祢U

賀利芳, 吳雪霜, 張?zhí)祢U. 正交多用戶短參考差分混沌移位鍵控通信系統(tǒng)性能分析[J]. 電子與信息學(xué)報(bào), 2020, 42(10): 2445-2453. doi: 10.11999/JEIT190778
引用本文: 賀利芳, 吳雪霜, 張?zhí)祢U. 正交多用戶短參考差分混沌移位鍵控通信系統(tǒng)性能分析[J]. 電子與信息學(xué)報(bào), 2020, 42(10): 2445-2453. doi: 10.11999/JEIT190778
Lifang HE, Xueshuang WU, Tianqi ZHANG. Performance Analysis of Orthogonal Multiuser Short Reference Differential Chaos Shift Keying Communication System[J]. Journal of Electronics & Information Technology, 2020, 42(10): 2445-2453. doi: 10.11999/JEIT190778
Citation: Lifang HE, Xueshuang WU, Tianqi ZHANG. Performance Analysis of Orthogonal Multiuser Short Reference Differential Chaos Shift Keying Communication System[J]. Journal of Electronics & Information Technology, 2020, 42(10): 2445-2453. doi: 10.11999/JEIT190778

正交多用戶短參考差分混沌移位鍵控通信系統(tǒng)性能分析

doi: 10.11999/JEIT190778
基金項(xiàng)目: 國(guó)家自然科學(xué)基金(61771085, 61371164),重慶市教育委員會(huì)科研項(xiàng)目(KJQN201900601, KJ1600407)
詳細(xì)信息
    作者簡(jiǎn)介:

    賀利芳:女,1979年生,碩士,副教授,研究方向?yàn)榛煦绫C芡ㄐ?、微弱信?hào)檢測(cè)

    吳雪霜:女,1996年生,碩士生,研究方向?yàn)榛煦绫C芡ㄐ?/p>

    張?zhí)祢U:男,1971年生,博士后,教授,研究方向?yàn)閿U(kuò)頻信號(hào)的盲處理、語(yǔ)音信號(hào)處理、神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)以及信號(hào)的同步處理

    通訊作者:

    吳雪霜 3319154122@qq.com

  • 中圖分類號(hào): TN911

Performance Analysis of Orthogonal Multiuser Short Reference Differential Chaos Shift Keying Communication System

Funds: The National Natural Science Foundation of China (61771085, 61371164), The Research Project of Chongqing Educational Commission (KJQN201900601, KJ1600407)
  • 摘要: 針對(duì)差分混沌移位鍵控系統(tǒng)傳輸速率和能量效率低的缺點(diǎn),該文提出一種正交多用戶短參考差分混沌移位鍵控(OMU-SR-DCSK)通信系統(tǒng)。系統(tǒng)將參考信號(hào)長(zhǎng)度縮短為每個(gè)信息承載信號(hào)長(zhǎng)度的1/P,并在參考時(shí)隙后增加了兩路連續(xù)的信息時(shí)隙,每個(gè)信息時(shí)隙內(nèi),N個(gè)用戶信息在Walsh碼正交特性作用下同時(shí)傳輸,利用Walsh碼的正交特性可完全消除用戶間干擾,從而改善系統(tǒng)誤碼性能。推導(dǎo)了OMU-SR-DCSK在加性高斯白噪聲(AWGN)信道和Rayleigh衰落信道下的理論比特誤碼率(BER)公式并進(jìn)行了仿真。仿真結(jié)果和理論推導(dǎo)的吻合證明了理論推導(dǎo)的正確性,從而為OMU-SR-DCSK應(yīng)用于多用戶串行傳輸系統(tǒng)提供了理論依據(jù)。
  • 圖  1  OMU-SR-DCSK和DCSK系統(tǒng)第k幀結(jié)構(gòu)對(duì)比圖

    圖  2  OMU-SR-DCSK系統(tǒng)發(fā)送機(jī)結(jié)構(gòu)

    圖  3  OMU-SR-DCSK系統(tǒng)接收機(jī)結(jié)構(gòu)

    圖  4  兩徑Rayleigh衰落信道模型

    圖  5  傳輸速率提升百分比${R_d}$

    圖  6  比特能量節(jié)省百分比${E_B}$

    圖  7  DCSK的平方幅度譜

    圖  8  OMU-SR-DCSK的平方幅度譜

    圖  9  R不同時(shí)BER隨${{{E_{\rm}}} / {{N_0}}}$變化的曲線

    圖  10  N不同時(shí)BER隨${{{E_{\rm}}} / {{N_0}}}$變化的曲線

    圖  11  P不同時(shí)BER隨${{{E_{\rm}}} / {{N_0}}}$變化的曲線

    圖  12  ${{{E_{\rm}}} / {{N_0}}},P$不同時(shí)BER隨R變化的曲線

    圖  13  ${{{E_{\rm}}} / {{N_0}}},N$不同時(shí)BER隨R變化的曲線

    圖  14  AWNG信道下不同系統(tǒng)間誤碼性能對(duì)比

    圖  15  OMU-SR-DCSK系統(tǒng)在兩種增益下的性能比較

    圖  16  不同系統(tǒng)在等增益情況下的性能比較

    表  1  OMU-SR-DCSK, SRMR-DCSK, VHE-DCSK和MC-DCSK系統(tǒng)的能量效率及傳輸速率

    系統(tǒng)名稱傳輸速率(${R_B}$)能量效率(${E_\eta }$)
    OMU-SR-DCSK${{2N} / {(R + 2\beta )}}$${{2N\beta } / {(R + 2N\beta )}}$
    SRMR-DCSK${N / {(R + \beta )}}$${{N\beta } / {(R + N\beta )}}$
    VHE-DCSK${N / {(2\beta }})$${N / {(1 + N)}}$
    MC-DCSK${N / \beta }$${N / {(1 + N)}}$
    下載: 導(dǎo)出CSV
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  • 收稿日期:  2019-10-09
  • 修回日期:  2020-06-03
  • 網(wǎng)絡(luò)出版日期:  2020-06-26
  • 刊出日期:  2020-10-13

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