期刊名称：International Journal of Advanced Research in Computer Engineering & Technology (IJARCET)
印刷版ISSN：2278-1323
出版年度：2012
卷号：1
期号：7
页码：244-252
出版社：Shri Pannalal Research Institute of Technolgy
摘要：With the advent of new high data rate wireless applications, as well as growth of existing wireless services, demand for additional band width is rapidly increasing. A cognitive radio (CR) node is a radio device capable of operating over multiple channels. As a result, a network consisting of one or more CR nodes can adapt to varying chann el availability in its geographical region by dynamically changing the channel (or channels) that nodes use for communication. We investigate the problem of neighbor discovery in a network consisting of one or more CR nodes when nodes have multiple receivers but only single transmitter. Neighbor discovery, in turn can be used to solve other important communication problems such as broadcasting and gossiping in an efficient manner . we present an OFDMA ¨C based deterministic distributed algorithm for neighbor discovery. An OFDMA system is considered to be suitable for the cognitive Radio base band processing . The individual carrier frequency can be switched off for an occupied user. We propose an ARM processor architecture which can be dynamically configured for the baseband processing. This p aper presents a design technology S. prabhu Sri Lakshmi Ammal Engg College for an adaptive OFDMA baseband for cognitive radio using ARM processor.
