| 窄带OFDM移动视频传输编码系统设计 |
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| 引用本文： | 陈潇雨,陈伟,樊丰.窄带OFDM移动视频传输编码系统设计[J].通信技术,2010,43(10):11-13. |
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| 作者姓名： | 陈潇雨 陈伟 樊丰 |
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| 作者单位： | 电子科技大学,电子工程学院,四川,成都,611731 |
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| 摘 要： | 城市移动视频监控作为一种新的安保方案,具有广阔的市场,但由于城市无线传输的多径效应,因此对传输系统有较高的要求。而正交频分复用（OFDM）具有优良的抗无线衰落效应,因此设计采用了基于OFDM技术。然后在参考了的欧洲数字视频广播（DVB）标准和数字音频广播（DAB）标准的基础上,重新设计一套编码系统的帧结构、信道编码和调制方式,以使之能够适应城市多径效应环境下的移动视频信号的传输。最后给出了编码输出信号的频谱图。
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| 关 键 词： | 移动视频传输 正交频分复用 里德所罗伦码 卷积编码 交织 |
Design of Narrow-band OFDM Mobile Video Coding System |
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| CHEN Xiaoyu,CHEN Wei,FAN Feng.Design of Narrow-band OFDM Mobile Video Coding System[J].Communications Technology,2010,43(10):11-13. |
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| Authors: | CHEN Xiaoyu CHEN Wei FAN Feng |
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| Affiliation: | (Electronic and Engineering school,University of Electronic Science and Technology of China,Chengdu Sichuan 611731,China) |
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| Abstract: | The city mobile video surveillance,as a new security scheme,has a broad market.Due to the multi-path effects of the wireless transmission in the city,it has high requirements of the transmission system.OFDM could effectively overcome the multi-path interference in wireless transmission.So,this system solution based on OFDM is adopted.Then,a mobile video transmission system adaptable to city multi-path effects is designed,with reference to the European DVB and DAB standards.In order to resist the city multi-path effects and make sure the correct transmission of mobile video,its frame structure,channel coding and modulation are redesigned.Finally,the frequency spectrum of the encoded signal is given. |
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| Keywords: | mobile video transmission OFDM RS code convolutional code interlever |
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