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IMPROVING MIMO-OFDM-BASED DVB-H SYSTEMS PERFORMANCE USING LDPC CODES

机译:使用LDPC代码改进基于MIMO-OFDM的DVB-H系统性能

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Handheld devices are becoming more and more popular across the world although there are often still reception problems. To solve these reception issues, technology such as multiple antenna systems are being investigated. One drawback: to such systems is that of Peak to Average Power Ratio - an effect where out of band radiation can cause distortions in the transmitted stream especially where combined with Orthogonal Frequency Division Multiplex (the technology behind modern hand-held television). This paper will show that by combining powerful error correction coding (in this case the low density parity check), it is possible to lower the peak to average power ratio with minimal increase in complexity.
机译:手持设备在世界各地变得越来越受欢迎,尽管通常仍然存在接收问题。为了解决这些接收问题,正在研究多个天线系统等技术。一个缺点:到这样的系统是峰值到平均功率比的峰值 - 频带辐射的效果会导致传输流中的扭曲,特别是在与正交频分复用(现代手持电视背后的技术)组合的那里。本文将表明,通过组合强大的纠错编码(在这种情况下,低密度奇偶校验检查),可以将峰值降低到平均功率比,随着复杂性的最小增加。

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