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Trellis coded spread-spectrum modulation schemes with multiple-access interference and coded modulation schemes in a fading environment.

机译:在衰落环境中具有多址干扰的网格编码扩展频谱调制方案和编码调制方案。

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摘要

In this research, the performance of orthogonal, biorthogonal, Nordstrom-Robinson, Reed-Muller, and Kerdock codes in various trellis-coded versions is examined under different channel fading conditions, and with multiple-access interference. The trellis coded Nordstrom-Robinson, Reed-Muller, and Kerdock codes can achieve high input rate while maintaining a certain minimum distance, and thus low error rate is obtained at high signal-to-noise or signal-to-interference ratio. Also, adaptive coding can be applied on different input bits of the trellis coded modulation schemes. An outer code can be concatenated with trellis coded modulation schemes to further reduce error probability.; Also, a new coded modulation scheme is applied to orthogonal, biorthogonal, Nordstrom-Robinson, Reed-Muller, and Kerdock codes. When a binary convolutional code is bit interleaved and concatenated with this new coded modulation scheme, significantly larger overall distances are possible. This can be achieved for both coherent and noncoherent demodulation. Different multicast schemes are considered and compared with the new coded modulation scheme. Several realistic fading channel models of mobile communication are proposed, and the application of the new coded modulation scheme over various fading channel models is examined. Various input rates are assumed under realistic assumptions, and their performances are examined and compared.
机译:在这项研究中,在不同的信道衰落条件下,在多址干扰的情况下,研究了各种网格编码版本中正交,双正交,Nordstrom-Robinson,Reed-Muller和Kerdock码的性能。网格编码的Nordstrom-Robinson,Reed-Muller和Kerdock码可以在保持一定最小距离的同时实现高输入速率,因此在高信噪比或信号干扰比的情况下可以获得较低的错误率。同样,可以将自适应编码应用于网格编码调制方案的不同输入位。外码可以与网格编码调制方案连接起来,以进一步降低错误概率。此外,新的编码调制方案也应用于正交,双正交,Nordstrom-Robinson,Reed-Muller和Kerdock码。当二进制卷积码与这种新的编码调制方案进行比特交织和连接时,总距离可能会大大增加。对于相干解调和非相干解调都可以实现这一点。考虑了不同的组播方案,并将其与新的编码调制方案进行了比较。提出了几种现实的移动通信衰落信道模型,并研究了新的编码调制方案在各种衰落信道模型上的应用。在现实的假设下假设各种输入率,并检查和比较它们的性能。

著录项

  • 作者

    Cheng, Victor Wen-Kai.;

  • 作者单位

    University of Michigan.;

  • 授予单位 University of Michigan.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2000
  • 页码 160 p.
  • 总页数 160
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

  • 入库时间 2022-08-17 11:47:31

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