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arXiv 1807.07009eess.SP
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基于递归神经网络的无线认知网络OFDM收发端概率密度函数估计

Probability Density Function Estimation in OFDM Transmitter and Receiver in Radio Cognitive Networks based on Recurrent Neural Network

Mahdi Mir

摘要:

由于无线技术的不受控制的增长,电信中最重要的问题是带宽限制。部署动态频谱接入技术是为有效使用带宽而提供的过程之一。近年来,认知无线电网络作为一种有效利用频谱的工具被引入.这些无线电能够通过传感器和信号操作识别周围环境来使用无线电资源,这意味着只有在授权用户不使用其频谱时才使用这些资源。次级用户是未经授权的用户,必须避免干扰初级用户的传输。二级用户必须离开通道,以防止对主要用户造成损害,只要这些用户自行决定。本文在基于OFDM的认知无线电网络中,提出了基于概率密度函数的基于递归神经网络的频谱机会预测用于带宽优化和通过预测频谱空洞发现减少能量消耗用于服务质量优化。仿真结果表明,在这些网络中,次用户可以在不与主用户发生冲突和重叠的情况下进行频谱占用和数据发送,从而获得了可接受的信噪比和带宽优化值。

英文摘要:

The most important problem in telecommunication is bandwidth limitation due to the uncontrolled growth of wireless technology. Deploying dynamic spectrum access techniques is one of the procedures provided for efficient use of bandwidth. In recent years, cognitive radio network introduced as a tool for efficient use of spectrum. These radios are able to use radio resources by recognizing surroundings via sensors and signal operations that means use these resources only when authorized users do not use their spectrum. Secondary users are unauthorized ones that must avoid from interferences with primary users transmission. Secondary users must leave channel due to preventing damages to primary users whenever these users discretion. In this article, spectrum opportunities prediction based on Recurrent Neural Network for bandwidth optimization and reducing the amount of energy by predicting spectrum holes discovery for quality of services optimization proposed in OFDM-based cognitive radio network based on probability density function. The result of the simulation represent acceptable value of SNR and bandwidth optimization in these networks that allows secondary users to taking spectrum and sending data without collision and overlapping with primary users.

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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