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Design of Space-Time Coded Multi-Carrier CDMA System based on Metaheuristic Optimization Algorithms

Design of Space-Time Coded Multi-Carrier CDMA System based on Metaheuristic Optimization Algorithms
	© 2022 by IJETT Journal
	Volume-70 Issue-10
	Year of Publication : 2022
	Authors : P. Sreesudha, B. L. Malleswari
	DOI : 10.14445/22315381/IJETT-V70I10P208

How to Cite?

P. Sreesudha, B. L. Malleswari, "Design of Space-Time Coded Multi-Carrier CDMA System based on Metaheuristic Optimization Algorithms ," International Journal of Engineering Trends and Technology, vol. 70, no. 10, pp. 61-66, 2022. Crossref, https://doi.org/10.14445/22315381/IJETT-V70I10P208

Abstract
Multiple Carrier Code Division Multiple Access (MC-CDMA) system performances are evaluated with the MMSE (Minimum Mean Square Error) equalization algorithm in this framework. The system's performance is augmented with the assistance of meta-heuristic optimization algorithms. Nature-inspired Krill Herd algorithm with an oppositional-based learning method (OKH) is used to improve performance. And the system was also implemented using Kinetic Gas Molecule Optimization (KGMO) algorithm. KGMO is also a metaheuristic-based process that operates with the concept of thermodynamics. Procuring wireless channel details is a difficult task in mobile wireless systems. Both algorithms help in obtaining channel information. Multiple inputs and multiple outputs (MIMO) are primary in existing and ensuing wireless communications. Space-time coding (STC) is integral to multi-antenna operations, mainly concerned with integrity. The proposed optimisation algorithms based on the multi-carrier CDMA system using space-time coding are implemented, and the BER parameter is evaluated. 2 transmitting and 1 receiving antennae are considered in the proposed system. Simulations are done in Rayleigh fading channel.

Keywords
CDMA, MC-CDMA, MIMO, OFDM, Optimization Algorithm.

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