High-quality signal transmission techniques for personal communication systems - novel coherent demodulation and ADPCM voice transmission with click noise processing-

K. Kobayshi, T. Sakata, Y. Matsumoto, K. Enomoto, Shuji Kubota, S. Kato

研究成果: Conference contribution

1 引用 (Scopus)

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
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 251995 7 28

Other

OtherProceedings of the 1995 IEEE 45th Vehicular Technology Conference. Part 2 (of 2)
Chicago, IL, USA
期間95/7/2595/7/28

Fingerprint

Speech transmission
Personal communication systems
Demodulation
Recovery
Demodulators
Rayleigh fading
Processing
Clocks
Modulation
Bandwidth
Networks (circuits)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

これを引用

Kobayshi, K., Sakata, T., Matsumoto, Y., Enomoto, K., Kubota, S., & Kato, S. (1995). High-quality signal transmission techniques for personal communication systems - novel coherent demodulation and ADPCM voice transmission with click noise processing-. : Anon (版), IEEE Vehicular Technology Conference (巻 2, pp. 733-737). IEEE.

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

Kobayshi, K, Sakata, T, Matsumoto, Y, Enomoto, K, Kubota, S & Kato, S 1995, High-quality signal transmission techniques for personal communication systems - novel coherent demodulation and ADPCM voice transmission with click noise processing-. : Anon (版), IEEE Vehicular Technology Conference. 巻. 2, IEEE, pp. 733-737, Proceedings of the 1995 IEEE 45th Vehicular Technology Conference. Part 2 (of 2), Chicago, IL, USA, 95/7/25.
Kobayshi K, Sakata T, Matsumoto Y, Enomoto K, Kubota S, Kato S. High-quality signal transmission techniques for personal communication systems - novel coherent demodulation and ADPCM voice transmission with click noise processing-. : Anon, 編集者, IEEE Vehicular Technology Conference. 巻 2. IEEE. 1995. p. 733-737
Kobayshi, K. ; Sakata, T. ; Matsumoto, Y. ; Enomoto, K. ; Kubota, Shuji ; Kato, S. / High-quality signal transmission techniques for personal communication systems - novel coherent demodulation and ADPCM voice transmission with click noise processing-. IEEE Vehicular Technology Conference. 編集者 / Anon. 巻 2 IEEE, 1995. pp. 733-737
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