| 基于深度限幅滤波的DTMB峰均比抑制技术研究 |
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| 引用本文： | 张丽丽,叶宇煌,苏凯雄,吴林煌,翁义龙.基于深度限幅滤波的DTMB峰均比抑制技术研究[J].电视技术,2013,37(17). |
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| 作者姓名： | 张丽丽 叶宇煌 苏凯雄 吴林煌 翁义龙 |
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| 作者单位： | 福州大学物理与信息工程学院,福建福州,350002 |
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| 基金项目： | 福建省高校产学合作重大项目（2012H61010016）、福州大学育苗基金（2012-XY-25） |
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| 摘 要： | 针对DTMB系统已调信号具有峰均比高、容易产生严重非线性失真的问题,提出一种改进的限幅滤波方法.通过对限幅水平、限幅率和采样率等参数进行优化设计,使得本方法与传统方法相比,在PAPR降低量和误码率水平相似的情况下,计算复杂度大大减少.
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| 关 键 词： | DTMB 正交频分复用 峰均比 限幅滤波 限幅率 |
| 收稿时间： | 2013/3/21 0:00:00 |
| 修稿时间： | 2013/4/18 0:00:00 |
Study on PAPR Reduction Techniques of DTMB Based on Deep Clipping and Filtering |
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| Zhang Li Li,YE Yu-huang,SU Kai-xiong,WU Lin-huang and WENG Yi-long.Study on PAPR Reduction Techniques of DTMB Based on Deep Clipping and Filtering[J].Tv Engineering,2013,37(17). |
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| Authors: | Zhang Li Li YE Yu-huang SU Kai-xiong WU Lin-huang and WENG Yi-long |
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| Affiliation: | College of Physics and Information Engineering of Fuzhou University,College of Physics and Information Engineering of Fuzhou University,College of Physics and Information Engineering of Fuzhou University,College of Physics and Information Engineering of Fuzhou University,College of Physics and Information Engineering of Fuzhou University |
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| Abstract: | DTMB system has a high Peak-to-Average Power Ratio(PAPR), which causes serious nonlinear to the power amplifier easily. For the drawback, this paper proposes an improved Clipping and Filtering method and optimizes the clipping level, clipping rate, sample rate and other parameters. Matlab simulation results show that, compared with the conventional clipping and filtering techniques, its computational complexity is significantly reduced in case of similar PAPR reduction and level of BER. |
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| Keywords: | DTMB OFDM PAPR Clipping and filtering Clipping rate |
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