講演名 | 2012-03-07 Multiuser MIMO Modulation Transparency in 3GPP LTE-A : A Capacity Perspective , |
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抄録(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. |
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キーワード(英) | Multiuser MIMO / 3GPP LTE-A / modulation transparency / maximum likelihood detection / multiuser interference / wireless communications |
資料番号 | RCS2011-321 |
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研究会情報 | |
研究会 | RCS |
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開催期間 | 2012/2/29(から1日開催) |
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申込み研究会 | Radio Communication Systems (RCS) |
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本文の言語 | ENG |
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タイトル(英) | Multiuser MIMO Modulation Transparency in 3GPP LTE-A : A Capacity Perspective |
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キーワード(1)(和/英) | / Multiuser MIMO |
第 1 著者 氏名(和/英) | / Oussama Souihli |
第 1 著者 所属(和/英) | Graduate School of Science and Technology, Keio University |
発表年月日 | 2012-03-07 |
資料番号 | RCS2011-321 |
巻番号(vol) | vol.111 |
号番号(no) | 451 |
ページ範囲 | pp.- |
ページ数 | 6 |
発行日 |