Near real-time rateless coding with a constrained feedback budget
Near real-time rateless coding with a constrained feedback budget
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反馈预算有限的近实时无速率编码
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
A. Trachtenberg
中科院分区：
文献类型：
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作者：
M. Hashemi;A. Trachtenberg
我们提出了一个近实时的无码率编码方法的基础上，约束使用的反馈信道。在我们的方案中使用的具体反馈是基于一个测量的距离之间的接收到的字和符号已经在接收器中解码，连续的反馈提供累积信息的解码器的状态。我们的编码器，反过来，优化其选择的组成源符号在每个编码根据解码器的信息，而不是均匀随机通常这样做。我们提供了一个上限的错误概率，我们的方法与最大似然解码器一起使用时，和仿真结果表明，编码性能可以根据反馈预算进行调整。
We present a near real-time rateless coding approach based on the constrained use of a feedback channel. The specific feedback used in our scheme is based on a measure of distance between a received word and the symbols already decoded at the receiver, with successive feedbacks providing accumulating information about the state of the decoder. Our encoder, in turn, optimizes its choice of constituent source symbols in each encoding according to the decoder information and not uniformly at random as is typically done. We provide an upper-bound on the error probability of our approach when used with a maximum-likelihood decoder, and simulation results demonstrate that the coding performance can be tuned according to the feedback budget available.