Multi-Objective optimization using the Bees algorithm in time-varying channel for MIMO MC-CDMA systems

Fares Sayadi, Mahamod Ismail, Norbahiah Misran, Kasmiran Jumari

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

This paper proposes novel application of the Bees algorithm to multi objective optimization problems for the uplink of a multi carrier code division multiple access (MC-CDMA) system based on orthogonal frequency division multiplexing (OFDM). The multiple input multiple output (MIMO) channel from κ users, which moves at vehicular speed, to the base-station (BS) is time variant. For time varying channels the computational complexity of the two linear minimum mean square error (LMMSE) filters due to be computed at every time instant for channel estimation and multiuser detection (MUD), is nevertheless high. Thus, we develop a novel implementation of the multi objective optimization problems based on Bees algorithm throughout the iterative multiuser detection for a MIMO MC-CDMA system. This approach achieves intense trade-off between bit error rate (BER) performance and computational complexity with the benefit of utilizing fewer control parameters for time-varying channels as compared to the representative counterparts that is validated by simulations.

Original languageEnglish
Pages (from-to)411-428
Number of pages18
JournalEuropean Journal of Scientific Research
Volume33
Issue number3
Publication statusPublished - 2009

Fingerprint

Time-varying Channels
Multiuser Detection
Multiuser detection
Multicarrier
Bees
system optimization
Code Division multiple Access
Multiobjective Optimization Problems
Multiobjective optimization
Multi-objective Optimization
Multiple-input multiple-output (MIMO)
bee
Code division multiple access
Apoidea
Computational complexity
Computational Complexity
Iterative Detection
Minimum Mean Square Error
Channel Estimation
Uplink

Keywords

  • Bees algorithm
  • MIMO MC-CDMA
  • Multi objective optimization
  • Multiuser detection
  • Time variant channel

ASJC Scopus subject areas

  • General

Cite this

Multi-Objective optimization using the Bees algorithm in time-varying channel for MIMO MC-CDMA systems. / Sayadi, Fares; Ismail, Mahamod; Misran, Norbahiah; Jumari, Kasmiran.

In: European Journal of Scientific Research, Vol. 33, No. 3, 2009, p. 411-428.

Research output: Contribution to journalArticle

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