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Erschienen in:
MIMO Antennas: A 5G Communication Perspective Kapitel lesen Erstes Kapitel lesen

2021 | OriginalPaper | Buchkapitel

5. Sparse Code and Hybrid Multiple Access Techniques

verfasst von : Sanjeev Sharma, Kuntal Deka

Erschienen in: 5G and Beyond Wireless Systems

Verlag: Springer Singapore

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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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Vorheriges Kapitel Index Modulation Techniques for 5G and Beyond Wireless Systems
Nächstes Kapitel Implementation of a Non-orthogonal Multiple Access Scheme Under Practical Impairments
Fußnoten
1
Orthogonal time slots or frequency bands or codes are referred to as orthogonal resource in the system.
 
2
Only a few elements in a signal are non-zeros as compared to the total number of elements.
 
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Metadaten
Titel
Sparse Code and Hybrid Multiple Access Techniques
verfasst von
Sanjeev Sharma
Kuntal Deka
Copyright-Jahr
2021
Verlag
Springer Singapore
Buch
5G and Beyond Wireless Systems

Print ISBN: 978-981-15-6389-8

Electronic ISBN: 978-981-15-6390-4

Copyright-Jahr: 2021

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

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