抄録
This paper proposes high-quality signal transmission techniques for personal communication systems. A novel coherent demodulatior - VCHACE, Variable Carrier filter and HAng-up free clock recovery Coherent dEmodulator - has been proposed. The proposed carrier recovery circuit uses a reverse-modulation scheme with variable band-width carrier filter. By employing the proposed scheme, the FER (Frame Error Rate) performance is improved by 2dB compared with the differential detection scheme in typical Rayleigh fading environments. An ADPCM voice transmission scheme that employs a click noise suppressor has been also proposed. It achieves a voice quality improvement of 0.5 points in MOS evaluation (3dB improvement in required Eb/No) compared with conventional muting schemes in fading environments.
| 元の言語 | English |
|---|---|
| ホスト出版物のタイトル | IEEE Vehicular Technology Conference |
| 編集者 | Anon |
| 出版者 | IEEE |
| ページ | 733-737 |
| ページ数 | 5 |
| 巻 | 2 |
| 出版物ステータス | Published - 1995 |
| 外部発表 | Yes |
| イベント | Proceedings of the 1995 IEEE 45th Vehicular Technology Conference. Part 2 (of 2) - Chicago, IL, USA 継続期間: 1995 7 25 → 1995 7 28 |
Other
| Other | Proceedings of the 1995 IEEE 45th Vehicular Technology Conference. Part 2 (of 2) |
|---|---|
| 市 | Chicago, IL, USA |
| 期間 | 95/7/25 → 95/7/28 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
これを引用
High-quality signal transmission techniques for personal communication systems - novel coherent demodulation and ADPCM voice transmission with click noise processing-. / Kobayshi, K.; Sakata, T.; Matsumoto, Y.; Enomoto, K.; Kubota, Shuji; Kato, S.
IEEE Vehicular Technology Conference. 版 / Anon. 巻 2 IEEE, 1995. p. 733-737.研究成果: Conference contribution
}
TY - GEN
T1 - High-quality signal transmission techniques for personal communication systems - novel coherent demodulation and ADPCM voice transmission with click noise processing-
AU - Kobayshi, K.
AU - Sakata, T.
AU - Matsumoto, Y.
AU - Enomoto, K.
AU - Kubota, Shuji
AU - Kato, S.
PY - 1995
Y1 - 1995
N2 - This paper proposes high-quality signal transmission techniques for personal communication systems. A novel coherent demodulatior - VCHACE, Variable Carrier filter and HAng-up free clock recovery Coherent dEmodulator - has been proposed. The proposed carrier recovery circuit uses a reverse-modulation scheme with variable band-width carrier filter. By employing the proposed scheme, the FER (Frame Error Rate) performance is improved by 2dB compared with the differential detection scheme in typical Rayleigh fading environments. An ADPCM voice transmission scheme that employs a click noise suppressor has been also proposed. It achieves a voice quality improvement of 0.5 points in MOS evaluation (3dB improvement in required Eb/No) compared with conventional muting schemes in fading environments.
AB - This paper proposes high-quality signal transmission techniques for personal communication systems. A novel coherent demodulatior - VCHACE, Variable Carrier filter and HAng-up free clock recovery Coherent dEmodulator - has been proposed. The proposed carrier recovery circuit uses a reverse-modulation scheme with variable band-width carrier filter. By employing the proposed scheme, the FER (Frame Error Rate) performance is improved by 2dB compared with the differential detection scheme in typical Rayleigh fading environments. An ADPCM voice transmission scheme that employs a click noise suppressor has been also proposed. It achieves a voice quality improvement of 0.5 points in MOS evaluation (3dB improvement in required Eb/No) compared with conventional muting schemes in fading environments.
UR - http://www.scopus.com/inward/record.url?scp=0029191750&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0029191750&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0029191750
VL - 2
SP - 733
EP - 737
BT - IEEE Vehicular Technology Conference
A2 - Anon, null
PB - IEEE
ER -