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应用科学学报 ›› 2002, Vol. 20 ›› Issue (2): 135-140.

• 论文 • 上一篇    下一篇

带删除卷积码的多电平DAPSK的性能

赛和得, 吴乐南   

  1. 东南大学无线电工程系, 江苏南京 210096
  • 收稿日期:2001-01-04 修回日期:2001-10-21 出版日期:2002-06-30 发布日期:2002-06-30
  • 作者简介:赛和得(1957-),male,Iraqi,Doctor;吴乐南(1952-),male,Anhui,Professor.
  • 基金资助:
    Project Supported by the National Natural Science Foundation of China(60072013)

A Multi-level DAPSK Performance with Punctured Convolutional Coding

SAYHOOD Khalid Hassan, WU Le-nan   

  1. Radio Engineering Department, Southeast University, Nanjing 210096, China
  • Received:2001-01-04 Revised:2001-10-21 Online:2002-06-30 Published:2002-06-30
  • Supported by:
    Project Supported by the National Natural Science Foundation of China(60072013)

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被引次数

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摘要： 研究带删除卷积码的8、16、32-差分幅/相移键控(DAPSK)调制.在加性高斯白噪声(AWGN)和Rayleigh衰落信道下比较了其与16-QAM相干调制器的性能.与相干系统形成对照,非相干系统无需导频符号.对于多种衰落条件优化了DAPSK系统的参数(如环比),用删除卷积码做信道编码,非相干8-DAPSK在AWGN和Rayleigh衰落信道下的性能只比8/16(或8/24)码率的16-QAM差约1dB.这意味着对Rayleigh衰落信道,可采用简单的非相干解调以避免复杂的载波提取.

关键词: 差分调制, 删除卷积码, AWGN信道, Rayleigh衰落信道, 数字无线广播

Abstract: Punctured convolutional coding with an 8, 16 and 32differential amplitude and phase shift keying (DAPSK) modulation is considered. The performance with an additive white Gaussian noise (AWGN) and Rayleigh fading channels are compared to a coherent 16-quadrature amplitude modulation (QAM). DAPSK modulation parameter such as ring ratio has been optimized for a number of fading conditions. With punctured convolutional coding, the performance of noncoherent 8-DAPSK modulation in an AWGN and Rayleigh fading channels is about 1 dB less than a comparable 16-QAM with a code rate of 8/16 (or 8/24).

Key words: AWGN channels, Rayleigh fading channels, digital radio broadcasting, punctured convolutional coding, differential modulation

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