| Presentation | 2008-11-21 Computation of Instantaneous Bit Error Probability from Log-Likelihood Ratio Bijan ROHANI, Kambiz HOMAYOUNFAR, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents a simple and accurate method for computing the Bit Error Probability (BEP) from Log-Likelihood Ratio (LLR). We emphasize the difference between BEP and LLR in order to rule out the direct use of LLR as a measure of transmission quality. This in turn leads to a simple algebraic expression for mapping LLR to BEP. In effect, we derive a reliability metric that gives the probability that a decoded bit is incorrect, and works as a stochastic time-series for Adaptive Modulation and Coding (AMC), Channel Quality Indication (CQI), and physical layer procedures. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Bit Error Probability (BEP) / Log-Likelihood Ratio (LLR) / Adaptive Modulation/Coding (AMC) / Channel Quality Indication (CQI) / Hybrid Automatic-Repeat-Request (HARQ) |
| Paper # | RCS2008-150 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2008/11/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | 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) | Computation of Instantaneous Bit Error Probability from Log-Likelihood Ratio |
| Sub Title (in English) | |
| Keyword(1) | Bit Error Probability (BEP) |
| Keyword(2) | Log-Likelihood Ratio (LLR) |
| Keyword(3) | Adaptive Modulation/Coding (AMC) |
| Keyword(4) | Channel Quality Indication (CQI) |
| Keyword(5) | Hybrid Automatic-Repeat-Request (HARQ) |
| 1st Author's Name | Bijan ROHANI |
| 1st Author's Affiliation | Phybit Inc.() |
| 2nd Author's Name | Kambiz HOMAYOUNFAR |
| 2nd Author's Affiliation | Phybit Inc. |
| Date | 2008-11-21 |
| Paper # | RCS2008-150 |
| Volume (vol) | vol.108 |
| Number (no) | 305 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |