This paper examined the technologies and issues to be considered at World Administrative Radio Conference (WARC)-92, discusses the international and domestic context for WARC-93 preparations, and analyzed the U.S. process of conference preparation.
This report examines the U.S. preparations process for WARC-92, highlighting efforts to integrate the needs and concerns of various interest groups. It also reviews the forces and trends affecting the United States as it approaches WARC-92, and is intended to inform future congressional oversight of the domestic and international radio communication policy process.
This report discusses the role of radio technologies and services in our daily lives. The report elaborates on the outcomes and implications for U.S. radio technology, and the next steps and lessons for the future.
In wireless communication systems, one of the most important resources being focused on all the researchers is spectrum. A cognitive radio (CR) system is one of the efficient ways to access the radio spectrum opportunistically, and efficiently use the available underutilized licensed spectrum. Spectrum utilization can be significantly enhanced by developing more applications with adopting CR technology. CR systems are implemented using a radio technology called software-defined radios (SDR). SDR provides a flexible and cost-effective solution to fulfil the requirements of end users. We can see a lot of innovations in Internet of Things (IoT) and increasing number of smart devices. Hence, a CR system application involving an IoT device is studied in this thesis. Opportunistic spectrum access involves two tasks of CR system: spectrum sensing and dynamic spectrum access. The functioning of the CR system is rest upon the spectrum sensing. There are different spectrum sensing techniques used to detect the spectrum holes and a few of them are discussed here in this thesis. The simplest and easiest to implement energy detection spectrum sensing technique is used here to implement the CR system. Dynamic spectrum access involves different models and strategies to access the spectrum. Amongst the available models, an interweave model is more challenging and is used in this thesis. Interweave model needs effective spectrum sensing before accessing the spectrum opportunistically. The system designed and simulated in this thesis is capable of transmitting an output from an IoT device using USRP and GNU radio through accessing the radio spectrum opportunistically.
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