PSO-Based NBI Resistant Asynchronous MC-CDMA Multiuser Detector

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Anmol Kumar 1,* Rajdeep Kaur 2

1. IKG Punjab Technical University, Kapurthala-144601, India

2. CEC, Landran, Mohali-140301, India

* Corresponding author.


Received: 1 Feb. 2016 / Revised: 7 May 2016 / Accepted: 1 Jul. 2016 / Published: 8 Oct. 2016

Index Terms

Multi-Carrier Code Division Multiple Access (MC-CDMA), OFDM, Narrowband Interference (NBI), Multiuser Detection (MUD), Multiple Access Interference (MAI), Particle Swarm Optimization (PSO)


Nowadays with the increase of demand in multimedia communication, a reliable and error-free wireless communication system is the need of the hour. MC-CDMA is being investigated as a potential radio technology to provide fourth generation (4G) and fifth generation (5G) cellular mobile services. Narrowband interference (NBI) signals corrupts the subcarriers of MC-CDMA system and as a result its performance degrades. All the available NBI elimination methods uses some kind of filters and other circuitry prior to the demodulator (receiver) to filter out NBI. So addition of extra hardware to the system makes the system complex and slow. Moreover CDMA based systems are affected by digital NBI which gets superimposed with wideband spread spectrum signal. Multiuser detection could be an efficient technique to suppress NBI and multiple access interference (MAI). Computational complexity of opti-mum multiuser detector is an impediment in the way of an efficient multiuser detector. In this paper we propose a particle swarm optimization (PSO) based optimum multiuser detector to eliminate NBI. Simulation results show that performance of proposed PSO based multiuser detector is capable of eliminating NBI with much lesser amount of computational complexity.

Cite This Paper

Anmol Kumar, Rajdeep Kaur, "PSO-Based NBI Resistant Asynchronous MC-CDMA Multiuser Detector", International Journal of Intelligent Systems and Applications (IJISA), Vol.8, No.10, pp.60-67, 2016. DOI:10.5815/ijisa.2016.10.07


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