Title: Performance modelling and estimation of multi-user CDMA wireless technology with evolving spreading gain and noise density

Authors: Ridhima Mehta

Addresses: School of Computer and Systems Sciences, Jawaharlal Nehru University, New Delhi, India

Abstract: The efficient signal processing techniques for spread-spectrum code division multiple access (CDMA) systems necessitate data delivery with higher quality-of-service support, diminished error rates and improved channel capacity. In this paper, the impact of interference regulation is explored on various channel-based unique attributes in the wireless multi-user CDMA networks. The enhanced performance of these networks with increasing spreading gains to accomplish wider communication spectrum is analysed while accommodating a larger number of subscribers. Moreover, the performance comparison between synchronous and asynchronous CDMA techniques is implemented for different number of users and noise spectral density. As the order of the employed phase shift keying modulation scheme increases, the average signal-to-interference plus noise ratio (SINR) per information bit transmitted scales up for accurate channel detection and data decoding at the receiver. Finally, it is demonstrated that our proposed model outperforms other existing methods in terms of SINR, average bit error rate, and throughput.

Keywords: bit error rate; code division multiple access; CDMA; interference power; signal-to-interference plus noise ratio; SINR; spreading gain.

DOI: 10.1504/IJICT.2024.142050

International Journal of Information and Communication Technology, 2024 Vol.25 No.4, pp.380 - 400

Accepted: 27 Feb 2024
Published online: 07 Oct 2024 *

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