频率选择衰落信道的空时频格编码

Vehicular Technology Conference. IEEE 55th Vehicular Technology Conference. VTC Spring 2002 (Cat. No.02CH37367) Pub Date : 2002-08-07 DOI:10.1109/VTC.2002.1002681

Zhiqiang Liu, Yan Xin, G. Giannakis

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引用次数: 6

摘要

针对频率选择性瑞利衰落信道上的多天线OFDM传输，提出了一种新的空时频(STF)栅格编码方案。结合子载波分组并选择合适的系统参数，首先将系统转换为一组组STF (GSTF)系统。这使得简化每个GSTF系统中的STF块编码成为可能。我们推导了STF网格编码的设计准则，并利用现有的ST网格编码技术来构造STF网格编码。所得到的编码显示能够实现最大的分集增益，同时提供低复杂度的解码。通过仿真验证了我们设计的性能优势，并与现有方案进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Space-time-frequency trellis coding for frequency-selective fading channels

A novel space-time-frequency (STF) trellis coding scheme is developed for multi-antenna OFDM transmissions over frequency-selective Rayleigh fading channels. Incorporating subcarrier grouping and choosing appropriate system parameters, we first convert our system into a set of group STF (GSTF) systems. This enables simplification of STF block coding within each GSTF system. We derive design criteria for STF trellis coding, and exploit existing ST trellis coding techniques to construct STF trellis codes. The resulting codes are shown capable of achieving maximum diversity gains, while affording low-complexity decoding. The performance merits of our design is confirmed by corroborating simulations, and compared with existing alternatives.

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Vehicular Technology Conference. IEEE 55th Vehicular Technology Conference. VTC Spring 2002 (Cat. No.02CH37367)

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