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首页> 外文期刊>IEEE communications letters >Interleaved TC 8DPSK/OFDM with decision-directed channel estimation on frequency-selective Rayleigh fading channels
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Interleaved TC 8DPSK/OFDM with decision-directed channel estimation on frequency-selective Rayleigh fading channels

机译:频率选择性瑞利衰落信道上具有决策导向信道估计的交错式TC 8DPSK / OFDM

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摘要

Trellis-coded modulation (TCM) is a power and bandwidth efficient signaling scheme. In this letter, we propose interleaved trellis-coded (TC) 8DPSK/OFDM combined with decision-directed (DD) channel estimation on frequency-selective Rayleigh fading channels. We use a subchannel block interleaver in an OFDM symbol interval to randomize the burst errors due to the correlated dispersive fading channel. We also use DD channel estimation using the previous detected 8DPSK symbols in the temporal direction to improve the performance at fast fading. Computer simulations show that the proposed technique has good performance at fast fading.
机译:网格编码调制(TCM)是一种功率和带宽高效的信令方案。在这封信中,我们提出了在频率选择性瑞利衰落信道上交错网格编码(TC)8DPSK / OFDM与决策导向(DD)信道估计相结合的方法。我们在OFDM符号间隔中使用子信道块交织器来随机化由于相关色散衰落信道而导致的突发错误。我们还使用在时间方向上使用先前检测到的8DPSK符号的DD信道估计来提高快速衰落时的性能。计算机仿真表明,该技术在快速衰落方面具有良好的性能。

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