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Exact Bit Error-Rate Analysis of Two-User NOMA Using QAM with Arbitrary Modulation Orders

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posted on 18.05.2020 by Arafat Al-Dweik, Tasneem Assaf, Mohamed El Moursi, Hatem Zein El din, Mohammad Al-Jarrah
This work considers the exact bit error rate (BER) analysis of a two-user non-orthogonal multiple access (NOMA) system using quadrature amplitude modulation (QAM). Unlike existing work, no constraints on the modulation order of the QAM symbols for any user. Closed-form expressions are derived for the BER of joint multiuser detector (JMuD), which is demonstrated that it is equivalent to the successive interference cancellation (SIC) receiver. Moreover, a general expression is derived for the relation between the power allocation factors for the two users, which depends on the modulation order for each user.

History

Email Address of Submitting Author

dweik@fulbrihtmail.org

ORCID of Submitting Author

0000-0002-3487-3438

Submitting Author's Institution

Khalifa University

Submitting Author's Country

United Arab Emirates

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