Title :
Cognitive Radio Transmission Based on Direct Sequence MC-CDMA
Author :
Attar, Alireza ; Nakhai, Mohammad Reza ; Aghvami, A. Hamid
Author_Institution :
King´´s Coll. London, London
fDate :
4/1/2008 12:00:00 AM
Abstract :
In this paper, we propose a cognitive cellular system based on DS MC-CDMA to coexist with a number of narrow-band legacy systems in the same frequency range. If the bandwidth and the frequency location of each narrow-band system are known to this cognitive MC-CDMA, it is possible to mitigate their interfering effect in the cognitive receivers by adaptive transmission. We will develop an algorithm for calculating the adaptive transmission parameters and show that it combats interference in the channel effectively.
Keywords :
code division multiple access; cognitive radio; interference suppression; radiofrequency interference; spread spectrum communication; adaptive transmission; cognitive radio transmission; cognitive receiver; direct sequence MC-CDMA; interfering effect; narrow-band legacy system; Bandwidth; Chromium; Cognitive radio; Frequency; Interference; Multicarrier code division multiple access; Narrowband; OFDM; Transceivers; Transmitters;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2007.060907
