| 摘要: |
| 本文概述了LDPC码的编译码原理,重点论述在TI公司的DSP(TMS320C6416)上的(512,256)LDPC编译码器的算法实现,并给出其与(2,1,7)卷积码在AWGN信道条件下的纠错性能对比。对比表明(512,256)LDPC码比(2,1,7)软判决的卷积码在误码率为10-4时可具有1.5dB的编码增益。 |
| 关键词: LDPC码 编码 译码 优化 实现 |
| DOI：10.3969/j.issn.1001-893X. |
| Received:July 26, 2004 |
| 基金项目: |
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| DSP Implementation of LDPC Codes |
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| Abstract: |
| This paper firstly introduces the principles of Low Density Parity Check (LDPC) coding and decoding,then describes how to implement it on the TI fixed point DSP(TMS320C6416).Finally,it gives the performance comparison between the (512,256) LDPC and (2,1,7)convolutional codes over the AWGN channel. The result indicates that at a bit error rate of 10~(-4), LDPC codes can offer more than 1.5 dB gain compared with the convolutional codes. |
| Key words: DSP |
