| DTMB嵌入式多业务系统的峰均比降低方法 |
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| 引用本文： | 王劲涛,贾淑芸,潘长勇,王晓晴.DTMB嵌入式多业务系统的峰均比降低方法[J].清华大学学报(自然科学版),2011(3):395-399. |
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| 作者姓名： | 王劲涛 贾淑芸 潘长勇 王晓晴 |
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| 作者单位： | 清华大学电子工程系清华信息科学与技术国家实验室; |
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| 基金项目： | 高等学校博士学科点专项科研基金(2009000,2120026); 教育部新世纪人才支持计划 |
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| 摘 要： | 针对中国地面数字电视传输标准的嵌入式多业务系统中的存在着较高峰的均比,提出了随机扩展映射的方法,使该系统峰均比大大降低,能够更好地应用于实际环境.该方法通过对映射扩展模块进行随机化改造达到了在不增加额外复杂度的前提下对系统实现改进的目标.通过对峰均比产生原因的深入分析,找到了该方法的理论依据并对其性能进行了深入讨论.系...
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| 关 键 词： | 中国地面数字电视传输标准 等价正交幅度调制 峰均比 嵌入多业务 |
Peak-to-average power ratio reduction in embedded transmissions of multiple services over DTMB systems |
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| WANG Jintao,JIA Shuyun,PAN Changyong,WANG Xiaoqing.Peak-to-average power ratio reduction in embedded transmissions of multiple services over DTMB systems[J].Journal of Tsinghua University(Science and Technology),2011(3):395-399. |
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| Authors: | WANG Jintao JIA Shuyun PAN Changyong WANG Xiaoqing |
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| Institution: | WANG Jintao,JIA Shuyun,PAN Changyong,WANG Xiaoqing(Tsinghua National Laboratory for Information Science and Technology,Department of Electronic Engineering,Tsinghua University,Beijing 100084,China) |
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| Abstract: | A randomized mapping method is used to reduce the peak-to-average power ratio(PAPR) in the embedded multiple services in digital television terrestrial multimedia broadcasting(DTMB) systems in China.With the randomized mapping strategy,the system PAPR is much lower and can be used in industry applications without extraordinary complexity.The technique is validated by theoretical analyses and simulations to show that this technique provides much better PAPR with fairly low bit-error-rate(BER) gain loss. |
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| Keywords: | digital television terrestrial multimedia broadcasting(DTMB) equivalent quadrature amplitude modulation(E-QAM) peak-to-average ratio(PAPR) embedded transmission of multi-service |
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