| 一种应用于实时业务的非恒速码传输策略 |
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| 引用本文： | 赵少华,陈巍,白铂,牛志升,曹志刚.一种应用于实时业务的非恒速码传输策略[J].电信科学,2013,29(10):58-64. |
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| 作者姓名： | 赵少华 陈巍 白铂 牛志升 曹志刚 |
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| 作者单位： | 清华大学微波与数字通信国家重点实验室 北京100084 |
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| 基金项目： | 国家重点基础研究发展计划（“973”计划）资助课题;国家重点基础研究发展计划（“973”计划）资助课题;电子信息系统复杂电磁环境效应国家重点实验室开放课题，国家自然科学基金创新研究群体资助课题 |
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| 摘 要： | 由于具有良好的信道自适应和低反馈数据量的优点，非恒速码有很好的应用前景。然而由于其自身编码的特点会造成数据传输延时，加上其对反馈链路质量的好坏敏感，直接影响了它在实时数据传输业务方面的应用。研究了随机反馈的ACK延时对非恒速编码性能的影响，提出一种新的LT编码实时数据传输策略，以解决传输系统实际反馈链路的非理想状况对通信质量造成的影响，实现了反馈不可靠情况下LT码的实时数据传输。
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| 关 键 词： | 非恒速码 LT编码传输策略 实时数据传输 反馈延时 |
A Rateless Code Transmission Strategy Based on Real Time Service |
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| Shaohua Zhao,Wei Chen,Bo Bai,Zhisheng Niu,Zhigang Cao.A Rateless Code Transmission Strategy Based on Real Time Service[J].Telecommunications Science,2013,29(10):58-64. |
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| Authors: | Shaohua Zhao Wei Chen Bo Bai Zhisheng Niu Zhigang Cao |
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| Institution: | State Key Laboratory on Microwave and Digital Communications,Tsinghua University,Beijing 100084,China |
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| Abstract: | Rateless codes has the advantage of good channel adaptivity with a low amount of feedback data.However,the data transmission delay caused by its own coding characteristics and its sensitivity of the feedback link quality directly affects its application in real-time data transmission services.The random delay of feedback ACK which reduce the LT coding's performance was discussed,and then a new LT code based real-time transmission strategy was proposed to address the impact of non-ideal conditions of the feedback link.This strategy can achieve higher data throughout in non-ideal feedback conditions. |
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| Keywords: | rateless code LT code transmission strategy real-time data transmission service feedback delay |
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