| 瑞利信道下高速LDPC码和OFDM在图像传输中的应用 |
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| 引用本文： | 霍永青,彭启琮,邵怀宗. 瑞利信道下高速LDPC码和OFDM在图像传输中的应用[J]. 光电工程, 2007, 34(2): 105-109 |
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| 作者姓名： | 霍永青 彭启琮 邵怀宗 |
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| 作者单位： | 电子科技大学,通信学院,四川,成都,610054;电子科技大学,通信学院,四川,成都,610054;电子科技大学,通信学院,四川,成都,610054 |
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| 摘 要： | 本文研究了OFDM调制技术以及LDPC编码技术在图像传输中的应用,分别对OFDM和三种不同LDPC码对无线信道下图像传输质量的影响做了仿真研究.仿真结果表明,把高速LDPC编码和OFDM调制技术结合起来应用在图像传输当中可以实现图像的可靠和高质量传输,即说明LDPC码和OFDM调制技术可以解决由于图像数据量大带来的传输速率和效率的问题,实现高速的和高频谱利用率的图像传输.
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| 关 键 词： | 图像传输 LDPC编码 OFDM调制 瑞利信道 |
| 文章编号： | 1003-501X(2007)02-0105-05 |
| 收稿时间： | 2006-05-15 |
| 修稿时间： | 2006-05-15 |
Image transmission with high-rate LDPC codes and OFDM modulation in rayleigh fading channel |
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| HUO Yong-qing,PENG Qi-cong,SHAO Huai-zong. Image transmission with high-rate LDPC codes and OFDM modulation in rayleigh fading channel[J]. Opto-Electronic Engineering, 2007, 34(2): 105-109 |
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| Authors: | HUO Yong-qing PENG Qi-cong SHAO Huai-zong |
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| Affiliation: | School of Communication and Information Engineering, UESTC, Chengdu 610054, China |
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| Abstract: | Application of Low-density Parity-check(LDPC) codes and orthogonal frequency division multiplexing(OFDM) modulation technology were studied in the image transmission,and the effect of three kinds of different LDPC codes and OFDM modulation technology on the image transmission over wireless fading channel was studied and simulated.The simulation results show that the combination of LDPC codes and OFDM modulation technology can obtain image transmission with high speed and high bandwidth efficiency,which can solve the problems about transmission speed and efficiency caused by mass image data.The image transmission with high speed and high spectral efficiency and can be achieved. |
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| Keywords: | Image transmission LDPC codes OFDM modulation Rayleigh channel |
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