講演抄録/キーワード |
講演名 |
2012-03-07 11:15
Multiuser MIMO Modulation Transparency in 3GPP LTE-A: A Capacity Perspective ○Oussama Souihli・Tomoaki Ohtsuki(Keio Univ.)・Bruno Melis・Marco Caretti(Telecom Italia) RCS2011-321 |
抄録 |
(和) |
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. |
(英) |
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. |
キーワード |
(和) |
Multiuser MIMO / 3GPP LTE-A / modulation transparency / maximum likelihood detection / multiuser interference / wireless communications / / |
(英) |
Multiuser MIMO / 3GPP LTE-A / modulation transparency / maximum likelihood detection / multiuser interference / wireless communications / / |
文献情報 |
信学技報, vol. 111, no. 451, RCS2011-321, pp. 31-36, 2012年3月. |
資料番号 |
RCS2011-321 |
発行日 |
2012-02-29 (RCS) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
RCS2011-321 |