Abstract
Observing that employing a single codebook (CB) per user transmission block in the conventional CB-based non-orthogonal multiple access (NOMA) schemes doesn't exploit code and interference diversity and has limitations in some unfavorable channel conditions, this letter presents multiple CB-based NOMA (MC-NOMA) in which multiple CBs are employed by a user in a round robin manner. Performance of schemes such as sparse code multiple access (SCMA) and pattern division multiple access (PDMA) is improved by MC-NOMA without incurring any additional receiver complexity and loss in spectral efficiency. Furthermore, to fully exploit code and interference diversity for MC-NOMA, CBs assignment algorithm is presented.
| Original language | English |
|---|---|
| Article number | 8957418 |
| Pages (from-to) | 683-687 |
| Number of pages | 5 |
| Journal | IEEE Wireless Communications Letters |
| Volume | 9 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2020 May |
Bibliographical note
Funding Information:Manuscript received December 15, 2019; accepted January 4, 2020. Date of publication January 13, 2020; date of current version May 8, 2020. This work was supported in part by Samsung Research in Samsung Electronics and in part by Korea University. The associate editor coordinating the review of this article and approving it for publication was B. Makki. (Corresponding author: Chung G. Kang.) The authors are with the Department of Electrical Engineering, Korea University, Seoul 136-713, South Korea (e-mail: [email protected]; [email protected]). Digital Object Identifier 10.1109/LWC.2020.2965939
Publisher Copyright:
© 2012 IEEE.
Keywords
- Non-orthogonal multiple access (NOMA)
- multiple codebook NOMA (MC-NOMA)
- pattern division multiple access (PDMA)
- sparse code multiple access (SCMA)
ASJC Scopus subject areas
- Control and Systems Engineering
- Electrical and Electronic Engineering