| 基于频域二值块通序列的TDS-OFDM发射分集 |
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| 引用本文： | 杜邓宝,王劲涛,王军,杨知行.基于频域二值块通序列的TDS-OFDM发射分集[J].清华大学学报(自然科学版),2009(10). |
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| 作者姓名： | 杜邓宝 王劲涛 王军 杨知行 |
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| 作者单位： | 清华大学电子工程系微波与数字通信技术国家重点实验室; |
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| 基金项目： | 国家“八六三”高技术项目 |
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| 摘 要： | 在数字电视地面广播中,为了消除时域同步正交频分复用(TDS-OFDM)技术在发射分集应用中的相互干扰,提出了频域二值块通序列的设计方法。该序列频域块状连续、正交、自相关性良好,且具有零互相关特性,可以很好地满足TDS-OFDM发射分集系统对时域快速同步和相互干扰消除的要求。分析了用该发射分集系统结构和信道估计算法。仿真结果表明:和传统的单天线低密度校验编码(LDPC)系统相比,该发射分集系统在慢衰落信道下可以获得1～3 dB的分集增益。
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| 关 键 词： | 数字电视地面广播 频域二值块通序列 时域同步正交频分复用 发射分集 |
TDS-OFDM transmit diversity scheme based on binary partial block pass sequences |
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| DU Dengbao,WANG Jintao,WANG Jun,YANG Zhixing.TDS-OFDM transmit diversity scheme based on binary partial block pass sequences[J].Journal of Tsinghua University(Science and Technology),2009(10). |
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| Authors: | DU Dengbao WANG Jintao WANG Jun YANG Zhixing |
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| Institution: | State Key Laboratory of Microwave and Digital Communication;Department of Electronic Engineering;Tsinghua University;Beijing 100084;China |
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| Abstract: | A design method for digital television terrestrial broadcasting was developed for binary partial block pass(BPBP) sequences to eliminate mutual interference using training sequences for time-domain synchronous orthogonal frequency division multiplexing(TDS-OFDM) systems with transmit diversity.The BPBP sequences are block consecutive,orthogonal in the frequency domain,and have good autocorrelation and zero cross-correlation properties.The TDS-OFDM transmit diversity padded by BPBP sequences as guard interva... |
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| Keywords: | digital television terrestrial broadcasting binary partial block pass sequence TDS-OFDM transmit diversity |
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