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首页> 外文会议>2011 IEEE International Conference on Communications >Flexible On-Line Construction of IRA Codes for Packet Erasure Correction with Application to Aeronautical Communications
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Flexible On-Line Construction of IRA Codes for Packet Erasure Correction with Application to Aeronautical Communications

机译：IRA代码的灵活在线构造，用于数据包擦除纠正，并应用于航空通信

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In many applications erasure correcting codes are used to recover packet losses at high protocol stack layers. The objects (e.g. files) to be transmitted often have variable sizes, resulting in a variable number of packet to be encoded by the packet-level encoder. In this paper, algorithms for the (on-line) flexible design of parity-check matrices for irregular-repeat-accumulate codes are investigated. The proposed algorithms allow designing in fast manner parity-check matrices that are suitable for low-complexity maximum-likelihood decoding. The code ensembles generated by the proposed algorithms are analyzed via extrinsic information transfer charts. Numerical results show how the designed codes can attain codeword error rates as low as 10^{-5} without appreciable losses w.r.t. the performance of idealized maximum-distance separable codes. The application of the proposed techniques to the upcoming aeronautical communication standard is investigated, proving the efficiency and the flexibility of the approach.
机译：在许多应用中，擦除校正码用于恢复高协议栈层的数据包丢失。要发送的对象（例如文件）通常具有可变的大小，从而导致可变数量的分组要由分组级编码器编码。本文研究了用于不规则重复累积码的奇偶校验矩阵（在线）灵活设计的算法。所提出的算法允许以快速方式设计适用于低复杂度最大似然解码的奇偶校验矩阵。通过本征算法生成的代码集合通过外部信息传递图进行分析。数值结果表明，所设计的代码如何能获得低至10 ^ {-5}的代码字错误率，而无明显损失。理想的最大距离可分离码的性能。对提出的技术在即将到来的航空通信标准中的应用进行了研究，证明了该方法的效率和灵活性。

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