| Presentation | 2003/1/8 On Log Likelihood Ratio of MAP decoding under Co Channel Interference Yuuzou SUZUKI, Fumiaki MAEHARA, Fumio TAKAHATA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The paper proposes a new desicion method of a Log Likelihood Ratio (LLR) under cochannel interference. A Maximum A posteriori Propability (MAP) decoding, which is mainly used to turbo codes, requires the LLR derived from the amplitude distribution of the received signal. Since, under cochannel interference, the received signal is composed of the interference signal in addition to the desired signal and thermal noise, the amplitude distribution of the received signal doesn't necessarily follow the Gaussian distribution. In the proposed scheme, the amplitude distribution of the received signal is derived by taking the amplitude distribution of the interference signal into account. By means of the computer simulations, the BER performance is evaluated, comparing with that of the scheme on the assumption that the amplitude distribution of the interference signal is characterized by the Gaussian distribution. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Turbo Coding / MAP Decoding / Log Likelihood Ratio / Cochannel Interference |
| Paper # | RCS2002-226,DSP2002-157,SAT2002-107 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2003/1/8(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 | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | On Log Likelihood Ratio of MAP decoding under Co Channel Interference |
| Sub Title (in English) | |
| Keyword(1) | Turbo Coding |
| Keyword(2) | MAP Decoding |
| Keyword(3) | Log Likelihood Ratio |
| Keyword(4) | Cochannel Interference |
| 1st Author's Name | Yuuzou SUZUKI |
| 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 | 2003/1/8 |
| Paper # | RCS2002-226,DSP2002-157,SAT2002-107 |
| Volume (vol) | vol.102 |
| Number (no) | 549 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |