Additional Condition on CSCG Random Vectors for I/Q Channels: With Application to CIS in NOMA 


Vol. 46,  No. 5, pp. 797-801, May  2021
10.7840/kics.2021.46.5.797


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  Abstract

Circularly-symmetric complex Gaussian (CSCG) random vectors (Rvecs) are often used to model practical in-phase and quadrature (I/Q) channels in communication systems. However, we know that CSCG Rvecs do not completely encompass practical I/Q channels. Thus, in this study, we propose an additional condition for CSCG Rvecs to be valid over I/Q channels, namely, a purely-real complex correlation coefficient (CCC). We then investigate the effects of an invalid CCC on the achievable data rate of non-orthogonal multiple access (NOMA) with correlated information sources. Results revealed that a purely-real CCC constraint should be imposed on CSCG Rvecs, when considering practical I/Q channels.

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  Cite this article

[IEEE Style]

K. Chung, "Additional Condition on CSCG Random Vectors for I/Q Channels: With Application to CIS in NOMA," The Journal of Korean Institute of Communications and Information Sciences, vol. 46, no. 5, pp. 797-801, 2021. DOI: 10.7840/kics.2021.46.5.797.

[ACM Style]

Kyuhyuk Chung. 2021. Additional Condition on CSCG Random Vectors for I/Q Channels: With Application to CIS in NOMA. The Journal of Korean Institute of Communications and Information Sciences, 46, 5, (2021), 797-801. DOI: 10.7840/kics.2021.46.5.797.

[KICS Style]

Kyuhyuk Chung, "Additional Condition on CSCG Random Vectors for I/Q Channels: With Application to CIS in NOMA," The Journal of Korean Institute of Communications and Information Sciences, vol. 46, no. 5, pp. 797-801, 5. 2021. (https://doi.org/10.7840/kics.2021.46.5.797)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880