| Presentation | 2012-03-07 Multiuser MIMO Modulation Transparency in 3GPP LTE-A : A Capacity Perspective Oussama Souihli, Tomoaki Ohtsuki, Bruno Melis, Marco Caretti, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this work, we consider the modulation-transparency issue related to the 3GPP-LTE debate to enhance multi-user multiple-input multiple-output (MU-MIMO) support in the upcoming LTE-A release of the 3GPP cellular standard. MU-MIMO is called modulation-transparent (or simply transparent, T-MIMO) when no signalling is provided to the receiver to inform it about the modulation scheme of the co-scheduled receivers. It is called non-transparent (NT-MIMO) otherwise. Such signalling is provided to the receiver to help it better deal with interference. There appears to be a disagreement within 3GPP on whether the capacity gains of modulation non-transparency are significant enough to be worth the increased signaling. Thus, we derive in this report closed-form capacity expressions so as to assess the expected gains of modulation non-transparency. Our results suggest that while substantial capacity gains can be expected from DCI non-transparency, such benefits are conditional upon sufficiently accurate CSI at the receiver's side. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Multiuser MIMO / 3GPP LTE-A / modulation transparency / maximum likelihood detection / multiuser interference / wireless communications |
| Paper # | RCS2011-321 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2012/2/29(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Multiuser MIMO Modulation Transparency in 3GPP LTE-A : A Capacity Perspective |
| Sub Title (in English) | |
| Keyword(1) | Multiuser MIMO |
| Keyword(2) | 3GPP LTE-A |
| Keyword(3) | modulation transparency |
| Keyword(4) | maximum likelihood detection |
| Keyword(5) | multiuser interference |
| Keyword(6) | wireless communications |
| 1st Author's Name | Oussama Souihli |
| 1st Author's Affiliation | Graduate School of Science and Technology, Keio University() |
| 2nd Author's Name | Tomoaki Ohtsuki |
| 2nd Author's Affiliation | Graduate School of Science and Technology, Keio University |
| 3rd Author's Name | Bruno Melis |
| 3rd Author's Affiliation | Telecom Italia S.p.A. |
| 4th Author's Name | Marco Caretti |
| 4th Author's Affiliation | Telecom Italia S.p.A. |
| Date | 2012-03-07 |
| Paper # | RCS2011-321 |
| Volume (vol) | vol.111 |
| Number (no) | 451 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |