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arXiv 1607.00591cs.ITmath.IT
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认知无线电网络中比特出错率的贝叶斯网络模型

A Bayesian Network Model of the Bit Error Rate for Cognitive Radio Networks

Hector Reyes, Sriram Subramaniam, Naima Kaabouch

摘要:

除了作为动态频谱接入的平台,认知无线电还可以作为一种方法,用于通过根据环境和需求智能地调整其操作参数来提高无线通信系统的性能。环境中始终存在的不确定性使得后一种应用的实际实施变得困难。在本文中,我们提出了一个概率图形模型,贝叶斯网络捕捉变量之间的因果关系比特能量噪声谱密度比(EbN 0),载波干扰比(C/I),调制方案(MOD),多普勒相移(Dop_Phi),和比特出错率(BER)。BER指示通信链路的性能。我们提出的贝叶斯网络的目标是使用BER作为证据,以推断其他变量的行为,因此认知无线电可以了解环境的条件,并根据这些知识做出更明智的决策。本文描述了该模型以及用于构建该模型的方法。

英文摘要:

In addition to serve as platforms for dynamic spectrum access, cognitive radios can also serve as a method for improving the performance of wireless communication systems by smartly adjusting their operating parameters according to the environment and requirements. The uncertainty always present in the environment makes the practical implementation of the latter application difficult. In this paper, we propose a probabilistic graphical model, Bayesian network that captures the causal relationships among the variables bit energy to noise spectral density ratio (EbN0), carrier to interference ratio (C/I), modulation scheme (MOD), Doppler phase shift (Dop_Phi), and bit error rate (BER). BER indicates how the communication link is performing. The goal of our proposed Bayesian network is to use the BER as evidence in order to infer the behavior of the other variables, so the cognitive radio can learn how the conditions of the environment are, and based on that knowledge make better informed decisions. This model along with the method used to build it are described in this paper.

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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