Memetic Algorithms with Multi-local-search for Resource Allocation in Multiuser OFDM Based Cognitive Radio Systems

Dong Huang; Chunyan Miao; Cyril Leung

ChinaCom2008-Wireless Communications and Networking Symposium

Research Article

Memetic Algorithms with Multi-local-search for Resource Allocation in Multiuser OFDM Based Cognitive Radio Systems

Cite: BibTeX Plain Text

@INPROCEEDINGS{10.1109/CHINACOM.2008.4685018,
    author={Dong Huang and Chunyan Miao and Cyril Leung},
    title={Memetic Algorithms with Multi-local-search for Resource Allocation in Multiuser OFDM Based Cognitive Radio Systems},
    proceedings={ChinaCom2008-Wireless Communications and Networking Symposium},
    publisher={IEEE},
    proceedings_a={CHINACOM2008-WCN},
    year={2008},
    month={11},
    keywords={Next Generation Wireless Systems and Technologies Power Line Communication},
    doi={10.1109/CHINACOM.2008.4685018}
}

Dong Huang
Chunyan Miao
Cyril Leung
Year: 2008
Memetic Algorithms with Multi-local-search for Resource Allocation in Multiuser OFDM Based Cognitive Radio Systems
CHINACOM2008-WCN
IEEE
DOI: 10.1109/CHINACOM.2008.4685018

Dong Huang¹^,*, Chunyan Miao¹^,*, Cyril Leung²^,*

1: School of Computer Engineering Nanyang Technological University Singapore 639798
2: Department of Electrical and Computer Engineering University of British Columbia Vancouver, BC Canada V6T 1Z4

*Contact email: hu0013ng@ntu.edu.sg, ascymiao@ntu.edu.sg, cleung@ece.ubc.ca

Abstract

Cognitive Radio (CR) is a novel concept for improving spectrum utilization in wireless communication systems by permitting secondary (unlicensed) users to access those frequency bands which are not currently being used by primary (licensed) users. A CR user has the ability to change its transmit parameters rapidly according to the environment it senses. Orthogonal frequency division multiplexing (OFDM) modulation is a good candidate for CR systems due to its flexibility in allocating resources among secondary users. In this paper, the design of a fast and efficient method for dynamically allocating subcarriers, transmit powers and bits to secondary users in a multiuser (MU) OFDM-based CR system is considered. A memetic algorithm (MA) combined with multi-local-search methods (MLS-MA) is proposed and shown to provide an improved performance over previously reported algorithms.

Keywords: Next Generation Wireless Systems and Technologies Power Line Communication

Published: 2008-11-21
Publisher: IEEE
Modified: 2010-05-16

: http://dx.doi.org/10.1109/CHINACOM.2008.4685018