| Presentation | 2014-03-05 A Pilot Contamination Averse Closed-Loop Scheme for TDD-Based Massive MIMO Systems Oussama SOUIHLI, Yasuyuki HATAKAWA, Satoshi KONISHI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | TDD-based Massive MIMO systems rely on channel reciprocity assumption (i.e. that the downlink channel matrix can be inferred from the uplink channel matrix), so that it suffices that the receivers send pilots in the uplink to the BS for the latter to determine the uplink channel matrix and subsequently the downlink channel matrix. However, since there are many UEs in Massive MIMO and the number of mutually-orthogonal pilot sequences is limited, some pilot sequences must be reused. This pilot reuse degrades uplink channel estimation in what is commonly known as the pilot contamination or pilot pollution problem. In this work, we provide a blind uplink channel estimation approach combined with a carefully defined transmit precoding, such that full-CSI-like performance is achieved. Because the proposed channel estimation is blind, there is no pilot contamination because there are no pilots in the first place. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | 3D MIMO / Massive MIMO / Channel Estimation and Feedback / 3GPP / TDD / Closed-Loop MIMO |
| Paper # | RCS2013-384 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2014/2/24(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) | A Pilot Contamination Averse Closed-Loop Scheme for TDD-Based Massive MIMO Systems |
| Sub Title (in English) | |
| Keyword(1) | 3D MIMO |
| Keyword(2) | Massive MIMO |
| Keyword(3) | Channel Estimation and Feedback |
| Keyword(4) | 3GPP |
| Keyword(5) | TDD |
| Keyword(6) | Closed-Loop MIMO |
| 1st Author's Name | Oussama SOUIHLI |
| 1st Author's Affiliation | Wireless Communication System Laboratory (WCSL), KDDI R&D Labs() |
| 2nd Author's Name | Yasuyuki HATAKAWA |
| 2nd Author's Affiliation | Wireless Communication System Laboratory (WCSL), KDDI R&D Labs |
| 3rd Author's Name | Satoshi KONISHI |
| 3rd Author's Affiliation | Wireless Communication System Laboratory (WCSL), KDDI R&D Labs |
| Date | 2014-03-05 |
| Paper # | RCS2013-384 |
| Volume (vol) | vol.113 |
| Number (no) | 456 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |