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A Simple and Sturdy Hybrid Interference Canceller for a DS-CDMA System in Multipath Environment for Static and Mobile Users

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Recent Trends in Electronics and Communication (VCAS 2020)

Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 777))

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Abstract

In direct sequence code-division multiple access (DS-CDMA) system, the users’ spreading codes lose their orthogonality because of asynchronous transmission, near-far effect, and multipath propagation of user signals. This engenders multiple access interference (MAI). MAI is detrimental to the quality of reception which can be quantified by bit error rate (BER) performance of the system. The users’ mobility results in Doppler shift of carrier frequency of the user signals, which further degrades the system performance. In this paper, a simple and sturdy hybrid interference cancellation detector is discussed and the performance test of the detector is performed in Rayleigh fading multipath environment for static and moving users. The detector is further tested for convergence. The combination of the interference cancellation method and the detection strategy used avoids the necessity of the RAKE combiner for estimating transmitted data. Detector performs very well for both static and moving users, and the detector’s convergence is assured.

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Authors and Affiliations

  1. Fr. Conceicao Rodrigues College of Engineering, Bandra (W), Mumbai, 400050, India

    Monica Khanore & Srija Unnikrishnan

Authors
  1. Monica Khanore
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  2. Srija Unnikrishnan
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Corresponding author

Correspondence to Monica Khanore .

Editor information

Editors and Affiliations

  1. Department of Electronics and Communication Engineering, Motilal Nehru National Institute of Technology, Allahabad, Uttar Pradesh, India

    Amit Dhawan

  2. Department of Electronics and Communication Engineering, Motilal Nehru National Institute of Technology, Allahabad, Uttar Pradesh, India

    Vijay Shanker Tripathi

  3. Department of Information and Communication Technology, Atal Bihari Vajpayee Indian Institute of Information Technology and Management, Gwalior, Madhya Pradesh, India

    Karm Veer Arya

  4. Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON, Canada

    Kshirasagar Naik

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Khanore, M., Unnikrishnan, S. (2022). A Simple and Sturdy Hybrid Interference Canceller for a DS-CDMA System in Multipath Environment for Static and Mobile Users. In: Dhawan, A., Tripathi, V.S., Arya, K.V., Naik, K. (eds) Recent Trends in Electronics and Communication. VCAS 2020. Lecture Notes in Electrical Engineering, vol 777. Springer, Singapore. https://doi.org/10.1007/978-981-16-2761-3_14

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  • DOI: https://doi.org/10.1007/978-981-16-2761-3_14

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-16-2760-6

  • Online ISBN: 978-981-16-2761-3

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