| Presentation | 2012-06-22 Proposal of Faster Method for MU-MIMO Precoding Using Fine-Graded Parallel Processing Kosuke SHIMAZAKI, Shingo YOSHIZAWA, Yasuyuki HATAKAWA, Tomoko MATSUMOTO, Satoshi KONISHI, Yoshikazu MIYANAGA, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a fast processing method for Tomlinson-Harashima Precoding (THP) circuit used for multi-user MIMO (MU-MIMO) wireless communication systems. The authors separately design the LQ decomposition and interference cancellation parts in THP circuit, since their requirements for the calculation accuracy and the operation speed are not identical. The requirement for the operation speed for LQ decomposition part is low owing to the less-frequently update of the channel state information (CSI), while that for the calculation accuracy is high owing to the continuous use of the result of LQ decomposition until the next update of CSI. Hence the authors adopt ASIP (Application Specific Instruction-set Processor) for LQ decomposition part. On the other hand, the requirement for the operation speed for the interference cancellation part is high owing to the high frequent update of transmission data. Hence authors adopt the precomputation of division and the pipeline architecture, of which the processing time is reduced by 74%. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | MU-MIMO / THP / ASIP / FPU / LQ decomposition / Interference cancellation |
| Paper # | RCS2012-65 |
| Date of Issue |
| Conference Information | |
| Committee | RCS |
|---|---|
| Conference Date | 2012/6/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Proposal of Faster Method for MU-MIMO Precoding Using Fine-Graded Parallel Processing |
| Sub Title (in English) | |
| Keyword(1) | MU-MIMO |
| Keyword(2) | THP |
| Keyword(3) | ASIP |
| Keyword(4) | FPU |
| Keyword(5) | LQ decomposition |
| Keyword(6) | Interference cancellation |
| 1st Author's Name | Kosuke SHIMAZAKI |
| 1st Author's Affiliation | Graduate School of Information Science and Technology, Hokkaido University() |
| 2nd Author's Name | Shingo YOSHIZAWA |
| 2nd Author's Affiliation | Faculty of Engineering, Kitami Institute of Technology |
| 3rd Author's Name | Yasuyuki HATAKAWA |
| 3rd Author's Affiliation | KDDI R&D Laboratories Inc. |
| 4th Author's Name | Tomoko MATSUMOTO |
| 4th Author's Affiliation | KDDI R&D Laboratories Inc. |
| 5th Author's Name | Satoshi KONISHI |
| 5th Author's Affiliation | KDDI R&D Laboratories Inc. |
| 6th Author's Name | Yoshikazu MIYANAGA |
| 6th Author's Affiliation | Graduate School of Information Science and Technology, Hokkaido University |
| Date | 2012-06-22 |
| Paper # | RCS2012-65 |
| Volume (vol) | vol.112 |
| Number (no) | 89 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |