| 一种新的异步广播通信系统物理层设计 |
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| 引用本文： | 杨航,杜兴民.一种新的异步广播通信系统物理层设计[J].微计算机信息,2007,23(3X):169-171. |
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| 作者姓名： | 杨航 杜兴民 |
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| 作者单位： | 西安空军工程大学工程学院,西安710038 |
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| 基金项目： | 空间微波国家重点实验室武器装备预研基金（51473030105JB3201） |
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| 摘 要： | 基于Turbo喷泉码和小波包分形调制技术，提出一种新的异步广播通信系统FPGA实现方案。系统用并行信源信道Turbo喷泉码实现无损数据压缩和纠错，小波包调制实现发送信号时频图样的自由铺砌。系统可以同时实现接收机的异步接入、单向信道下数据的可靠分发及信源信道联合编码，仿真表明该系统相对普通信源信道编码调制有较大性能改善。
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| 关 键 词： | 异步广播信道 Turbo喷泉码 小波包分形调制 信源信道编码 |
| 文章编号： | 1008-0570（2007）03-3-0169-03 |
| 修稿时间： | 2007-02-032007-03-05 |
The Model Design of the Joint Source-channel-Fountain Coding Wavelet-Packet Modulation for Asynchronous Broadcast |
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| YANG HANG DU XINGMIN.The Model Design of the Joint Source-channel-Fountain Coding Wavelet-Packet Modulation for Asynchronous Broadcast[J].Control & Automation,2007,23(3X):169-171. |
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| Authors: | YANG HANG DU XINGMIN |
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| Abstract: | Based on source-channel Turbo fountain code and wavelet-packet modulation, this paper proposes a new joint source- channel coding modulation system for asynchronous broadcast. We introduce an appropriate system model and present a realization for a joint source-fountain coding by applying the capacity approaching, parallel concatenated turbo codes and db32 wavelet packet mod- ulation. The system combines lossless data compression as well as reliable broadcast and asynchronous data access. Simulation shows that the system outperforms a separated scheme composed of source coding and subsequent fountain coding. |
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| Keywords: | asynchronous broadcast turbo fountain code wavelet-packet modulation source-channel codingo |
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