| Presentation | 1995/4/21 A Voice Transmission Quality Improvement Scheme for Personal Communication Systems : Super Mute scheme Masanobu Suzuki, Shuji Kubota, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper clarifies the probability distribution of ADPCM code without error bits and the error patterns in slow fading channel, and proposes Super Mute (S-mute) scheme to reduce the voice quality degradation caused by the ADPCM code with fatal errors by using the characteristics of error added ADPCM codes. Further, this paper shows the adaptive optimization of ADPCM Code suitable for the degree of burst degradation by applying with channel quality estimation scheme, ADPCM Code Detection (ACD) scheme. As a result, when the proposed scheme is employed, the ADPCM Code errors more than 4 and 7 are reduced by 43% and 12%, respectively, and MOS improvement of 0.6 point compared with the conventional muting scheme. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | personal communication / ADPCM / muting / error pattern / voice / fading channel |
| Paper # | |
| Date of Issue |
| Conference Information | |
| Committee | RCS |
|---|---|
| Conference Date | 1995/4/21(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) | A Voice Transmission Quality Improvement Scheme for Personal Communication Systems : Super Mute scheme |
| Sub Title (in English) | |
| Keyword(1) | personal communication |
| Keyword(2) | ADPCM |
| Keyword(3) | muting |
| Keyword(4) | error pattern |
| Keyword(5) | voice |
| Keyword(6) | fading channel |
| 1st Author's Name | Masanobu Suzuki |
| 1st Author's Affiliation | NTT Wireless Systems Laboratories() |
| 2nd Author's Name | Shuji Kubota |
| 2nd Author's Affiliation | NTT Wireless Systems Laboratories |
| Date | 1995/4/21 |
| Paper # | |
| Volume (vol) | vol.95 |
| Number (no) | 12 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |