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arXiv 0905.2422cs.ITmath.IT
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两跳单用户网络中的多级编码

Multilevel Coding over Two-Hop Single-User Networks

Vahid Pourahmadi, Alireza Bayesteh, Amir K. Khandani

摘要:

在本文中,一个两跳网络中,信息从一个源通过一个中继传输到目的地被认为是。假设信道是带有加性高斯白噪声的静态衰落信道。所有节点都配备有单个天线,并且每个跳的信道状态信息(CSI)在相应的发射机处不可用。假设中继是简单的,即,不能在多个编码块上进行数据缓冲、不能随时间注水或不能重新调度。在这样的配置中通常使用的设计准则是在目的地处的平均接收速率的最大化。我们表明,使用一个连续的多级代码在源和中继,结合解码和转发策略在中继,在这个设置中执行最佳。此外,我们提出了一个计划,以最佳分配可用的源和中继功率到不同级别的相应的代码。在假设Rayleigh衰落的情况下评估了该方案的性能,并与之前已知的策略进行了比较。

英文摘要:

In this paper, a two-hop network in which information is transmitted from a source via a relay to a destination is considered. It is assumed that the channels are static fading with additive white Gaussian noise. All nodes are equipped with a single antenna and the Channel State Information (CSI) of each hop is not available at the corresponding transmitter. The relay is assumed to be simple, i.e., not capable of data buffering over multiple coding blocks, water-filling over time, or rescheduling. A commonly used design criterion in such configurations is the maximization of the average received rate at the destination. We show that using a continuum of multilevel codes at both the source and the relay, in conjunction with decode and forward strategy at the relay, performs optimum in this setup. In addition, we present a scheme to optimally allocate the available source and relay powers to different levels of their corresponding codes. The performance of this scheme is evaluated assuming Rayleigh fading and compared with the previously known strategies.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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