All-Spectrum Cognitive Channelization around Narrowband and Wideband Primary Stations
All-Spectrum Cognitive Channelization around Narrowband and Wideband Primary Stations
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窄带和宽带主站周围的全频谱认知信道化
DOI：
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发表时间：
2014
期刊：
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通讯作者：
T. Melodia
中科院分区：
文献类型：
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作者：
G. Sklivanitis;Emrecan Demirors;A. Gannon;S. Batalama;D. Pados;T. Melodia
在本文中，我们设计、实现并实验评估了一个用于窄带或宽带主站存在的认知信道化的无线软件定义无线电平台。认知信道化是通过共同优化二次用户的发射功率和波形信道来实现的。联合资源分配过程不需要先验地了解主用户的传输特性，并最大限度地提高辅助接收机输出端的信噪比（SINR）。这是通过设计跨越可用/设备可访问频谱的整个连续体的波形来实现的，同时满足次要用户的峰值功率约束和主要用户的干扰温度（IT）约束。我们建立了一个四节点软件定义无线电测试平台，并在室内实验室环境中实验证明了全频谱认知信道化的理论概念，包括主接收机和辅助接收机的预检测SINR和误码率（BER）。
In this paper we design, implement, and experimentally evaluate a wireless software-defined radio platform for cognitive channelization in the presence of narrowband or wideband primary stations. Cognitive channelization is achieved by jointly optimizing the transmission power and the waveform channel of the secondary users. The process of joint resource allocation requires no a-priori knowledge of the transmission characteristics of the primary user and maximizes the signal-to- interference-plus-noise ratio (SINR) at the output of the secondary receiver. This is achieved by designing waveforms that span the whole continuum of available/device-accessible spectrum, while satisfying a peak power constraint for the secondary users and an interference temperature (IT) constraint for the primary users. We build a four-node software-defined radio testbed and experimentally demonstrate in an indoor laboratory environment the theoretical concepts of all-spectrum cognitive channelization in terms of pre-detection SINR and bit- error-rate (BER) at both primary and secondary receivers.