How Can Near-Perfect SIC NOMA Be Implemented? (Part II): Complement Superposition Coding for 4-Ary Pulse Amplitude Modulation 


Vol. 45,  No. 4, pp. 668-677, Apr.  2020
10.7840/kics.2020.45.4.668


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  Abstract

In non-orthogonal multiple access (NOMA), the successive interference cancellation (SIC) implementation is very important, because the performance of the stronger channel user with the low power allocation is greatly affected by the SIC performance. Up to now, in order to achieve the perfect SIC performance, two techniques for the single level modulation, such as binary phase shift keying (BPSK) and quadrature phase shift keying (QPSK), have been reported in the literature; one way is the dynamic superposition coding (DSC), which is the combination of the normal superposition coding (NSC) and symmetric superposition coding (SSC). The other way is the orthogonal NOMA with polar on-off keying (POOK). As an extended research, this paper challenges the perfect SIC NOMA performance for the 4-ary pulse amplitude modulation (4PAM); the perfect SIC performance cannot be obtained by a simple combination of NSC and SSC, just as for BPSK. For 4PAM case, we need new superposition coding, i.e., the complement superposition coding (CSC). It is shown analytically that the combination of NSC, SSC, and CSC can achieve the near-perfect SIC performance. As a result, the DSC concept could be applied for the multilevel modulations, in order to achieve the near-perfect SIC performance in NOMA.

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  Cite this article

[IEEE Style]

K. Chung, "How Can Near-Perfect SIC NOMA Be Implemented? (Part II): Complement Superposition Coding for 4-Ary Pulse Amplitude Modulation," The Journal of Korean Institute of Communications and Information Sciences, vol. 45, no. 4, pp. 668-677, 2020. DOI: 10.7840/kics.2020.45.4.668.

[ACM Style]

Kyuhyuk Chung. 2020. How Can Near-Perfect SIC NOMA Be Implemented? (Part II): Complement Superposition Coding for 4-Ary Pulse Amplitude Modulation. The Journal of Korean Institute of Communications and Information Sciences, 45, 4, (2020), 668-677. DOI: 10.7840/kics.2020.45.4.668.

[KICS Style]

Kyuhyuk Chung, "How Can Near-Perfect SIC NOMA Be Implemented? (Part II): Complement Superposition Coding for 4-Ary Pulse Amplitude Modulation," The Journal of Korean Institute of Communications and Information Sciences, vol. 45, no. 4, pp. 668-677, 4. 2020. (https://doi.org/10.7840/kics.2020.45.4.668)

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pISSN : 1226 - 4717
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