Bit Error Rate for NOMA Network

This letter examines the bit error rate (BER) performance of downlink non-orthogonal multiple access networks for binary phase-shift keying modulation. Exact BER expression is derived for each user in closed-form under additive white Gaussian noise and Rayleigh fading channels in perfect and imperfe...

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Bibliographic Details
Published in:IEEE communications letters 2020-06, Vol.24 (6), p.1188-1191
Main Authors: Aldababsa, Mahmoud, Goztepe, Caner, Kurt, Gunes Karabulut, Kucur, Oguz
Format: Article
Language:English
Subjects:
Binary phase shift keying
Bit error rate
Codes
Downlink
Fading channels
Mathematical analysis
NOMA
non-orthogonal multiple access
Nonorthogonal multiple access
power allocation
Random noise
Signal to noise ratio
Silicon carbide
Software radio
successive interference cancellation
Upper bounds
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Summary:This letter examines the bit error rate (BER) performance of downlink non-orthogonal multiple access networks for binary phase-shift keying modulation. Exact BER expression is derived for each user in closed-form under additive white Gaussian noise and Rayleigh fading channels in perfect and imperfect successive interference cancellation (SIC) cases. Next, in perfect SIC case, the asymptotic BER expression in a high signal-to-noise ratio (SNR) region is obtained to express the behavior of the network with diversity and array gains. On the other hand, in imperfect SIC case, the upper bound for BER is attained, and at high SNR values, the BER reveals an error floor, and hence a zero diversity gain is achieved. Then, a feasible range of power allocation coefficients is found such that a good BER performance can be provided for each user. Finally, through simulations and software-defined radio-based real-time tests, analytical results are validated.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2020.2981024