Title :
A multiuser detection based on quantum PSO with pareto optimality for STBC-MC-CDMA system
Author :
Liu, Hongwu ; Song, Gaojun
Author_Institution :
Sch. of Inf. Eng., Nanchang Hangkong Univ., Nanchang, China
Abstract :
A multiuser detection based on quantum particle swarm optimization (QPSO) with Pareto optimality is proposed for the space-time block coded-multicarrier code-division multiple-access (STBC-MC-CDMA) system. Due to the spatial diversity, the signals received at the different antennas are faded independently, resulting in an independent log-likelihood function (LLF) for each antenna. To resolve the multi-objective dilemma when choosing one signal estimation for multiple receive-antenna-branches, each quantum particle updates its value in a Pareto optimal way. Simulations and comparisons with the QPSO and the maximum likelihood detection (MLD) verified the effectiveness of the proposed scheme.
Keywords :
Pareto optimisation; block codes; code division multiple access; diversity reception; maximum likelihood detection; multiuser detection; particle swarm optimisation; receiving antennas; space-time codes; Pareto optimality; STBC-MC-CDMA system; independent log-likelihood function; maximum likelihood detection; multiuser detection; quantum particle swarm optimization; receiving antennas; signal estimation; space-time block coded-multicarrier code-division multiple-access; spatial diversity; Estimation; Fading; Maximum likelihood detection; Multiaccess communication; Multiuser detection; Pareto analysis; Particle swarm optimization; Receiving antennas; Signal resolution; Spatial resolution; PSO; Pareto optimality; STBC-MC-CDMA; quantum;
Conference_Titel :
Communications Technology and Applications, 2009. ICCTA '09. IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-4816-6
Electronic_ISBN :
978-1-4244-4817-3
DOI :
10.1109/ICCOMTA.2009.5349121
