| Presentation | 2009-03-04 Study of Two-way Channel Estimation Technique for Multi-user Distributed Antenna Systems with Spatial Precoding Ryosuke OSAWA, Hidekazu MURATA, Koji YAMAMOTO, Susumu YOSHIDA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper describes in detail the performance of a two-way multiple-input multiple-output (MIMO) channel sounding method for enabling base stations (BSs) to obtain knowledge of the downlink channel states. In the system, a precoder provides multi-user communications. The mathematical formulation and the solution techniques of the two-way MIMO channel sounding method, which applies the amplify-and-forward (AF) relay scheme, have been described in previously. However, implementations of the AF relay scheme such as forward gain, dynamic range, and forward timing synchronization are overlooked and highly desirable in order to confirm the efficiency of the method in the practical application of a multi-user distributed antenna system (DAS). Simulation results are presented to demonstrate the required implementations of the MSs by examining the bit error rate (BER) performance. It has been shown that by applying the AF relay scheme, the two-way MIMO channel sounding method may have the advantage of simple implementation, as compared to the feedback technique used in the limited feedback scenario. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Amplify-and-forward (AF) / Two-way channel estimation / Precoding / Coordinated multi-point transmission (CoMP) / Distributed antenna system (DAS) |
| Paper # | RCS2008-224 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2009/2/25(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) | Study of Two-way Channel Estimation Technique for Multi-user Distributed Antenna Systems with Spatial Precoding |
| Sub Title (in English) | |
| Keyword(1) | Amplify-and-forward (AF) |
| Keyword(2) | Two-way channel estimation |
| Keyword(3) | Precoding |
| Keyword(4) | Coordinated multi-point transmission (CoMP) |
| Keyword(5) | Distributed antenna system (DAS) |
| 1st Author's Name | Ryosuke OSAWA |
| 1st Author's Affiliation | Graduate School of Informatics, Kyoto University() |
| 2nd Author's Name | Hidekazu MURATA |
| 2nd Author's Affiliation | Graduate School of Informatics, Kyoto University |
| 3rd Author's Name | Koji YAMAMOTO |
| 3rd Author's Affiliation | Graduate School of Informatics, Kyoto University |
| 4th Author's Name | Susumu YOSHIDA |
| 4th Author's Affiliation | Graduate School of Informatics, Kyoto University |
| Date | 2009-03-04 |
| Paper # | RCS2008-224 |
| Volume (vol) | vol.108 |
| Number (no) | 445 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |