| Presentation | 2002/4/12 Calculation Reduction Method in OFDM-SDM system based on Maximum Likelihood Decision Takeshi MAEDA, Fumiaki MAEHARA, Fumio TAKAHATA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | An OFDM-SDM (Orthogonal Frequency Division Multiplexing-Space Division Multiplexing) system is one of powerful candidates to realize high speed wireless communication. It is required in the system to separate each OFDM signal because each all OFDM signals are transmitted from several antennas over the same frequency band. In general, MLD (Maximum Likelihood Decision) is employed to separate OFDM signals on the subcarrier basis. However, the amount of MLD calculation becomes huge when the MLD is appkied to all subcarriers because all possible data patterns should be prepared at the receiving side. The paper proposes a method to reduce the amount of MLD calculation by choosing subcarriers applied MLD based on the instantaneous SIR. The performance obtained in the proposed method is evaluated by means of computer simulation and theory. The results show that the proposed scheme can reduce the amount of MLD calculation without the degradation compared with the conventional method which applies MLD to all subcarriers. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | OFDM / SDM(Space Division Multiplexing) / Maximum Likelihood Decision / Instantaneous SIR(Signal to Inerference Ratio) |
| Paper # | CQ2002-34 |
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| Conference Information | |
| Committee | CQ |
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| Conference Date | 2002/4/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Communication Quality (CQ) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Calculation Reduction Method in OFDM-SDM system based on Maximum Likelihood Decision |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | SDM(Space Division Multiplexing) |
| Keyword(3) | Maximum Likelihood Decision |
| Keyword(4) | Instantaneous SIR(Signal to Inerference Ratio) |
| 1st Author's Name | Takeshi MAEDA |
| 1st Author's Affiliation | Graduate School of Science and Engineering, Waseda University() |
| 2nd Author's Name | Fumiaki MAEHARA |
| 2nd Author's Affiliation | Graduate School of Science and Engineering, Waseda University |
| 3rd Author's Name | Fumio TAKAHATA |
| 3rd Author's Affiliation | Graduate School of Science and Engineering, Waseda University |
| Date | 2002/4/12 |
| Paper # | CQ2002-34 |
| Volume (vol) | vol.102 |
| Number (no) | 24 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |