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首页> 外文会议>Annual Allerton Conference on Communication, Control, and Computing; 20040929-1001; Monticello,IL(US) >Delay Optimal Rate Allocation in Multiaccess Fading Communications
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Delay Optimal Rate Allocation in Multiaccess Fading Communications

机译：多址衰落通信中的延迟最优速率分配

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摘要

The literature on multiaccess communications has traditionally treated "network-layer" issues such as source burstiness and network delay apart from "physical-layer" issues such as channel modeling, coding, and detection. Recent work have sought to bridge this unfortunate division. Extending this line of inquiry, we investigate resource allocation policies which minimizes average delay in a multiaccess fading channel where packets arrive randomly to transmitters. Using information-theoretic optimal coding assumptions at the physical layer, we show that under symmetric conditions, a Longest-Queue-Highest-Possible-Rale (LQHPR) allocation strategy minimizes the average packet delay in a strong sense. Such a policy can be interpreted in the coding context as adaptive successive decoding. The delay performance of the LQHPR policy provides a fundamental lower bound to the performance of multiaccess coding schemes which seek to meet any given level of decoding error probability.
机译：关于多路访问通信的文献传统上将诸如源突发性和网络延迟之类的“网络层”问题与诸如信道建模，编码和检测之类的“物理层”问题分开对待。最近的工作试图弥补这一不幸的分歧。延伸这条查询线，我们研究了资源分配策略，该策略将数据包随机到达发射机的多路接入衰落信道中的平均延迟降至最低。使用物理层的信息理论最优编码假设，我们表明，在对称条件下，最长队列-最高可能-Rale（LQHPR）分配策略在最大意义上最小化了平均数据包延迟。这样的策略可以在编码上下文中解释为自适应连续解码。 LQHPR策略的延迟性能为寻求满足任何给定级别的解码错误概率的多址编码方案的性能提供了基本的下限。

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