Polar Multilevel On-Off Keying in NOMA 


Vol. 44,  No. 8, pp. 1467-1472, Aug.  2019
10.7840/kics.2019.44.8.1467


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  Abstract

To increase the rate of transmission, it is natural to consider the multilevel modulations. However, in non-orthogonal multiple access (NOMA), the straight application of multilevel modulations can be hardly made due to the severe effect of the superposition. Recently, to mitigate the destructive impact of the superposition, polar on-off keying (POOK) and quadrature POOK (QPOOK) have been proposed in [1-2]. This paper expands such concept to multilevel modulations, e.g., polar 4-ary on-off keying (P4OOK), which is compared to the 4-ary pulse amplitude modulation (4PAM). It is shown that first, for the strong channel user with binary phase shift keying (BPSK), the BPSK/P4OOK NOMA performance is better than the perfect successive interference cancellation (SIC) performance of BPSK/4PAM NOMA, and second, for the weak channel user, the BPSK/P4OOK NOMA performance is comparable to the perfect SIC BPSK/4PAM NOMA. In result, P4OOK could be considered for NOMA.

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  Cite this article

[IEEE Style]

K. Chung, "Polar Multilevel On-Off Keying in NOMA," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 8, pp. 1467-1472, 2019. DOI: 10.7840/kics.2019.44.8.1467.

[ACM Style]

Kyuhyuk Chung. 2019. Polar Multilevel On-Off Keying in NOMA. The Journal of Korean Institute of Communications and Information Sciences, 44, 8, (2019), 1467-1472. DOI: 10.7840/kics.2019.44.8.1467.

[KICS Style]

Kyuhyuk Chung, "Polar Multilevel On-Off Keying in NOMA," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 8, pp. 1467-1472, 8. 2019. (https://doi.org/10.7840/kics.2019.44.8.1467)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880