On the Capacity Comparison Between MIMO-NOMA and MIMO-OMA
Non-orthogonal multiple access (NOMA) has been shown in the literature to have a better performance than OMA in terms of sum channel capacity; however, the capacity superiority of NOMA over OMA has been only proved for single antenna systems, and the proof for the capacity superiority of multiple-in...
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| Online Access: | https://ieeexplore.ieee.org/document/7465730/ |
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doaj-202cc1eee28a4ea3abf5272fde237a0b2021-03-29T19:40:49ZengIEEEIEEE Access2169-35362016-01-0142123212910.1109/ACCESS.2016.25634627465730On the Capacity Comparison Between MIMO-NOMA and MIMO-OMAYang Liu0https://orcid.org/0000-0002-7709-3220Gaofeng Pan1Hongtao Zhang2Mei Song3School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaSchool of Electronic and Information Engineering, Southwest University, Chongqing, ChinaSchool of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaSchool of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaNon-orthogonal multiple access (NOMA) has been shown in the literature to have a better performance than OMA in terms of sum channel capacity; however, the capacity superiority of NOMA over OMA has been only proved for single antenna systems, and the proof for the capacity superiority of multiple-input multiple-output NOMA (MIMO-NOMA) over conventional MIMO-OMA has not been available yet. In this paper, we will provide our proof to demonstrate that the MIMO-NOMA is strictly better than MIMO-OMA in terms of sum channel capacity (except for the case where only one user is being communicated to), i.e., for any rate pair achieved by MIMO-OMA, there is a power split for which MIMO-NOMA can achieve rate pairs that are strictly larger. Based on this result, we prove that the MIMO-NOMA can also achieve a larger sum ergodic capacity than MIMO-OMA. Our analytical results are verified by simulations.https://ieeexplore.ieee.org/document/7465730/NOMAOMAMIMOmultiple accesscapacity |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Yang Liu Gaofeng Pan Hongtao Zhang Mei Song |
| spellingShingle |
Yang Liu Gaofeng Pan Hongtao Zhang Mei Song On the Capacity Comparison Between MIMO-NOMA and MIMO-OMA IEEE Access NOMA OMA MIMO multiple access capacity |
| author_facet |
Yang Liu Gaofeng Pan Hongtao Zhang Mei Song |
| author_sort |
Yang Liu |
| title |
On the Capacity Comparison Between MIMO-NOMA and MIMO-OMA |
| title_short |
On the Capacity Comparison Between MIMO-NOMA and MIMO-OMA |
| title_full |
On the Capacity Comparison Between MIMO-NOMA and MIMO-OMA |
| title_fullStr |
On the Capacity Comparison Between MIMO-NOMA and MIMO-OMA |
| title_full_unstemmed |
On the Capacity Comparison Between MIMO-NOMA and MIMO-OMA |
| title_sort |
on the capacity comparison between mimo-noma and mimo-oma |
| publisher |
IEEE |
| series |
IEEE Access |
| issn |
2169-3536 |
| publishDate |
2016-01-01 |
| description |
Non-orthogonal multiple access (NOMA) has been shown in the literature to have a better performance than OMA in terms of sum channel capacity; however, the capacity superiority of NOMA over OMA has been only proved for single antenna systems, and the proof for the capacity superiority of multiple-input multiple-output NOMA (MIMO-NOMA) over conventional MIMO-OMA has not been available yet. In this paper, we will provide our proof to demonstrate that the MIMO-NOMA is strictly better than MIMO-OMA in terms of sum channel capacity (except for the case where only one user is being communicated to), i.e., for any rate pair achieved by MIMO-OMA, there is a power split for which MIMO-NOMA can achieve rate pairs that are strictly larger. Based on this result, we prove that the MIMO-NOMA can also achieve a larger sum ergodic capacity than MIMO-OMA. Our analytical results are verified by simulations. |
| topic |
NOMA OMA MIMO multiple access capacity |
| url |
https://ieeexplore.ieee.org/document/7465730/ |
| work_keys_str_mv |
AT yangliu onthecapacitycomparisonbetweenmimonomaandmimooma AT gaofengpan onthecapacitycomparisonbetweenmimonomaandmimooma AT hongtaozhang onthecapacitycomparisonbetweenmimonomaandmimooma AT meisong onthecapacitycomparisonbetweenmimonomaandmimooma |
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1724195803561459712 |