Title :
Comparison of OFDM and FBMC performance in multi-relay cognitive radio network
Author :
Shaat, Musbah ; Bader, Faouzi
Author_Institution :
Centre Tecnol. de Telecomunicacions de Catalunya (CTTC), Barcelona, Spain
Abstract :
A multicarrier based cognitive radio (CR) network is considered in this paper. The goal is to maximize the total sum rate of the CR system while ensuring that no excessive interference is induced to the primary system. The optimal scheme adopts the dual decomposition technique and in order to reduce the computational complexity of the optimal scheme, a greedy suboptimal algorithm is proposed. Selected numerical results is discussed to reveal the near-optimal performance of the suboptimal scheme and the superiority of the proposed algorithm over the random and the signal-to-noise ratio (SNR) based schemes. This paper highlights the advantages of using filter bank multicarrier (FBMC) instead of OFDM in the physical layer of the future CR systems.
Keywords :
OFDM modulation; channel bank filters; cognitive radio; computational complexity; greedy algorithms; radio networks; CR network; CR system; FBMC performance; OFDM; SNR based schemes; computational complexity; dual decomposition technique; filter bank multicarrier; greedy suboptimal algorithm; multicarrier based cognitive radio network; multirelay cognitive radio network; physical layer; signal-to-noise ratio based schemes; Manganese; OFDM; Signal to noise ratio;
Conference_Titel :
Wireless Communication Systems (ISWCS), 2012 International Symposium on
Conference_Location :
Paris
Print_ISBN :
978-1-4673-0761-1
Electronic_ISBN :
2154-0217
DOI :
10.1109/ISWCS.2012.6328469
