| 降低Turbo接收机复杂度方案 |
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| 引用本文： | 聂远飞,葛建华,宫丰奎.降低Turbo接收机复杂度方案[J].华中科技大学学报(自然科学版),2007,35(7):31-34. |
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| 作者姓名： | 聂远飞 葛建华 宫丰奎 |
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| 作者单位： | 西安电子科技大学,综合业务网理论及关键技术国家重点实验室,陕西,西安,710071 |
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| 基金项目： | 国家自然科学基金
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国家高技术研究发展计划(863计划) |
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| 摘 要： | 从降低带比特交织的Turbo接收机复杂度的角度对其结构进行了讨论,通过对各组成部分外信息转移的研究,提出将Turbo接收机分阶段实现的方案,即开始使用带均衡器的接收机,然后使用迭代译码的比特交织编码调制系统.该方案可以减少环路,降低实现复杂度,同时减小系统时延.给出切换这两种接收机的准则后,对给定的系统在典型的符号间和干扰信道下进行了性能仿真,对比常用的Turbo接收机,迭代5次后,性能下降不到0.1dB,迭代10次后,两者性能非常接近,这表明所给方案是有效的.
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| 关 键 词： | Turbo均衡 外信息转移 带迭代译码的比特交织编码调制 Turbo 接收机 实现复杂度 方案 complexity receiver reduction 性能仿真 迭代译码 干扰信道 符号 减小系统 准则 时延 环路 编码调制系统 均衡器 使用 研究 信息转移 |
| 文章编号： | 1671-4512（2007）07-0031-04 |
| 修稿时间： | 2006-06-07 |
Scheme for the reduction of Turbo receiver complexity |
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| Nie Yuanfei,Ge Jianhua,Gong Fengkui.Scheme for the reduction of Turbo receiver complexity[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2007,35(7):31-34. |
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| Authors: | Nie Yuanfei Ge Jianhua Gong Fengkui |
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| Abstract: | The structure of a Turbo receiver with bit-interleaved from the perspective was discussed to decrease the realization complexity.After the research on extrinsic information transfer(EXIT) of each component,a new scheme is proposed to realize the Turbo receiver in a multistage way that an iterative receiver with an equalizer is used several times and then bit-interleaved coded modulation with iterative decoding(BICM-ID) is employed.It reduces the receiver complexity and delay.Some simulations are processing for a given system in a typical inter-symbol interference(ISI) channel after a switching criteria is presented between the two iterative receivers.Compared with the traditional Turbo receiver,the performance decreases less than 0.1dB when they have five iterations and closes to zero when ten,which shows that the proposed scheme is effective. |
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| Keywords: | Turbo equalization extrinsic information transfer(EXIT) bit-interleaved coded modulation with iterative decoding(BICM-ID) |
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