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Sparse Code and Hybrid Multiple Access Techniques

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5G and Beyond Wireless Systems

Part of the book series: Springer Series in Wireless Technology ((SSWT))

Abstract

Next-generation wireless networks require higher spectral efficiency and lower latency to meet the demands of various upcoming applications. Recently, non-orthogonal multiple access (NOMA) schemes are introduced in the literature for 5G and beyond. Various forms of NOMA are considered like power domain, code domain, pattern division multiple access, etc. to enhance the spectral efficiency of wireless networks. In this chapter, we introduce the code domain-based sparse code multiple access (SCMA) NOMA scheme to enhance the spectral efficiency of a wireless network. The design and detection of an SCMA system are analyzed in this chapter. Also, the method for codebooks design and its impact on system performance are highlighted. A hybrid multiple access scheme is also introduced using both code-domain and power-domain NOMA. Furthermore, simulation results are included to show the impact of various SCMA system parameters.

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Notes

  1. 1.

    Orthogonal time slots or frequency bands or codes are referred to as orthogonal resource in the system.

  2. 2.

    Only a few elements in a signal are non-zeros as compared to the total number of elements.

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Author information

Authors and Affiliations

  1. Indian Institute of Technology (BHU) Varanasi, Varanasi, Uttar Pradesh, 221005, India

    Sanjeev Sharma

  2. Indian Institute of Technology Goa, Goa College of Engineering Campus, Farmagudi, Ponda, Goa, 403401, India

    Kuntal Deka

Authors
  1. Sanjeev Sharma
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  2. Kuntal Deka
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Corresponding author

Correspondence to Sanjeev Sharma .

Editor information

Editors and Affiliations

  1. Department of Electronics and Telecommunication Engineering, SVKM’s NMIMS (Deemed to be University) Shirpur Campus, Shirpur, India

    Manish Mandloi

  2. Department of Electronics and Communication Engineering, National Institute of Technology Silchar, Silchar, India

    Devendra Gurjar

  3. Department of Electronics and Communication Engineering, National Institute of Technology Silchar, Silchar, India

    Prabina Pattanayak

  4. Department of Electrical and Computer Engineering, University of Saskatchewan, Saskatoon, SK, Canada

    Ha Nguyen

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Sharma, S., Deka, K. (2021). Sparse Code and Hybrid Multiple Access Techniques. In: Mandloi, M., Gurjar, D., Pattanayak, P., Nguyen, H. (eds) 5G and Beyond Wireless Systems. Springer Series in Wireless Technology. Springer, Singapore. https://doi.org/10.1007/978-981-15-6390-4_5

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  • DOI: https://doi.org/10.1007/978-981-15-6390-4_5

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-15-6389-8

  • Online ISBN: 978-981-15-6390-4

  • eBook Packages: EngineeringEngineering (R0)

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