文章基本信息

标题：DESIGN AND PERFORMANCE ANALYSIS OF PRECODED OFDM TRANSCEIVERS FOR COGNITIVE RADIO
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作者：S.K.PADMANABHAN ; DR.T.JAYACHANDRA PRASAD
期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2013
卷号：56
期号：2
出版社：Journal of Theoretical and Applied
摘要：The wireless spectrum being an scanty resource, needs to cater up for stipulated number of devices. But with wireless devices becoming pervasive, the provision of spectrum for such a substantial number seems to be an daunting task. Cognitive radio is a technology which uses the spectrum smartly by either sensing the spectrum hole in order to transmit the data or by sharing the available spectrum among two or more users. Hence cognitive radio is indispensible for the spectrum prerequisites. But the main problem is the phenomenon of cognitive interference. Precoded OFDM (Orthogonal Frequency Division Multiplexing) is found to have eliminate the interference by such a way that it gets cancelled as it is propagated. This work also comprises of the analysis of Throughput using MATLAB.
关键词：OFDM; Cognitive Radio; Dynamic Spectrum Usage; Overlay Networks; Precoding