On the Performance of GFDM Assisted NOMA Schemes

From the points of spectral efficiency, low latency and massive connectivity, novel modulation and multiple access schemes have been proposed in fifth generation (5G) wireless networks. However, the combinations of multiplexing and multiple access techniques have not been widely investigated in most...

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Bibliographic Details
Published in:IEEE access 2020, Vol.8, p.88961-88968
Main Authors: Zhang, Xiaotong, Wang, Zhenduo, Ning, Xiaoyan, Xie, Hong
Format: Article
Language:English
Subjects:
Downlink
Frequency division multiplexing
generalized frequency division multiplexing (GFDM)
multi-carrier NOMA
Network latency
NOMA
non-orthogonal multiple access (NOMA)
Nonorthogonal multiple access
Peak to average power ratio
Performance evaluation
Radio equipment
Receivers
Silicon carbide
theoretical BER
Uplink
Waveforms
Wireless networks
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Summary:From the points of spectral efficiency, low latency and massive connectivity, novel modulation and multiple access schemes have been proposed in fifth generation (5G) wireless networks. However, the combinations of multiplexing and multiple access techniques have not been widely investigated in most literatures. Therefore, we joint generalized frequency division multiplexing (GFDM) waveforms and power-domain non-orthogonal multiple access (NOMA) systems together in order to further extend the framework of multi-carrier NOMA, and also achieve performance evaluations for NOMA networks with one base station and two users. Basically, theoretical BER expressions of downlink and uplink GFDM assisted NOMA schemes are mathematically derived and then verified by simulation results. In addition, combined performance advantages, including higher achievable sum rate, lower peak-to-average power ratio (PAPR) and out of band power (OOBP) radiation, can be obtained in GFDM assisted NOMA networks.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2020.2994083