| 摘要: |
| LDPC码应用于OFDM系统能够得到非常好的性能,然而当信道估计信息发生错误将直接影响译码性能.为此,研究了信道估计误差对LDPC-OFDM系统性能的影响.理论和仿真得出了以下结论:信道估计误差可带来译码过程外部信息信噪比的提高或降低,由此加速成功译码或者导致译码失败. |
| 关键词: LDPC OFDM 信道估计 译码性能 |
| DOI：10.3969/j.issn.1001-893X. |
| 投稿时间：2006-06-30修订日期：2006-10-12 |
| 基金项目:国家高技术研究发展计划(863计划)
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三星电子中国通信研究院项目 |
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| Effect of Channel Information Estimation Error on the Performance of LDPC-OFDM System |
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| Abstract: |
| Good performance is desired when LDPC codes are applied in an OFDM system, whereas channel estimation error will affect the decoder. In this paper, effect of channel information estimation error on the performance of LDPC - OFDM system is analyzed . The principle and simulation results indicate that channel estimation error brings improvement or decrease in SNR of extrinsic information, thus decoding is accelerated or destroyed. |
| Key words: LDPC OFDM channel estimation decoding performance |
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