异步条件下物理层网络编码的性能分析

针对物理层网络编码的性能受各种异步条件影响的问题,理论推导了误码率与载波相位偏移、载波频率偏移和符号偏移之间的数学模型,分析了各种因素对误码率的影响规律.结果表明：在载波相位偏移达到π/2时,系统的误码率趋于一个常数;在载波频率偏移的条件下,误码率受频率偏移和帧长共同影响;在符号偏移的条件下,误码率相对于同步条件下最大损失6 dB....

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Bibliographic Details
Published in电子技术应用 Vol. 41; no. 6; pp. 103 - 106
Main Author 杨志民 胡永江 王长龙
Format Journal Article
LanguageChinese
Published 军械工程学院无人机工程系,河北石家庄,050003 2015
Subjects
物理层网络编码
符号偏移
误码率
载波相位偏移
载波频率偏移
symbol offset
carrier phase offset
载波相位偏移
载波频率偏移
physical layer network coding
误码率
carrier frequency offset
bit error rate
物理层网络编码
符号偏移
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ISSN0258-7998
DOI10.16157/j.issn.0258-7998.2015.06.028

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Summary:针对物理层网络编码的性能受各种异步条件影响的问题,理论推导了误码率与载波相位偏移、载波频率偏移和符号偏移之间的数学模型,分析了各种因素对误码率的影响规律.结果表明：在载波相位偏移达到π/2时,系统的误码率趋于一个常数;在载波频率偏移的条件下,误码率受频率偏移和帧长共同影响;在符号偏移的条件下,误码率相对于同步条件下最大损失6 dB.
Bibliography:physical layer network coding ; carrier phase offset ; carrier frequency offset ; symbol offset ; bit error rate
Because the physical layer network coding （PNC） is affected by a variety of asynchronous conditions,we deduce the mathematical model between the bit error rate and carrier phase offset,carrier frequency offset,symbol offset and analysis the influ- ence of various factors on the bit error rate.The result shows that when the carrier phase offset reaches IT/2,the bit error rate tends to constant with no change in signal to noise ratio;under the condition of carrier frequency offset,bit error rate is connect with frequency offset and frame length; under the condition of symbol offset,bit error rate is 6 dB maximum loss respecting to under the condition of synchronous.
Yang Zhimin, Hu Yongjiang, Wang Changlong （Unmanned Aerial System Engineering Department, Ordance Engineering College, Shijiazhuang 050003, China）
11-2305/TN
ISSN:0258-7998
DOI:10.16157/j.issn.0258-7998.2015.06.028