Bit significance selective frequency diversity transmission - voice quality improvement in fading channels

Tomoaki Kumagai, Kiyoshi Kobayashi, Katsuhiko Kawazoe, Shuji Kubota

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper proposes a frequency diversity transmission scheme that obtains a frequency diversity effect and does not deteriorate spectrum efficiency by utilizing multiple carrier frequencies alternatively, not simultaneously. This scheme improves the bit error rate (BER) of significant information bits by sacrificing that of insignificant bits in fading channels. Simulation results show that the error floor of significant information bits is improved by more than 80% while that of insignificant bits is doubled. Computer simulation results show that the proposed scheme improves the ADPCM voice signal-to-noise ratio (SNR) by approximately 4 dB even when the frequency correlation is 0.5.

Original languageEnglish
Title of host publicationAnnual International Conference on Universal Personal Communications - Record
Editors Anon
Pages910-914
Number of pages5
Volume2
Publication statusPublished - 1996
Externally publishedYes
EventProceedings of the 1996 5th IEEE International Conference on Universal Personal Communications, ICUPC'96. Part 1 (of 2) - Cambridge, MA, USA
Duration: 1996 Sep 291996 Oct 1

Other

OtherProceedings of the 1996 5th IEEE International Conference on Universal Personal Communications, ICUPC'96. Part 1 (of 2)
CityCambridge, MA, USA
Period96/9/2996/10/1

Fingerprint

Speech transmission
Fading channels
Bit error rate
Signal to noise ratio
Computer simulation

ASJC Scopus subject areas

  • Hardware and Architecture

Cite this

Kumagai, T., Kobayashi, K., Kawazoe, K., & Kubota, S. (1996). Bit significance selective frequency diversity transmission - voice quality improvement in fading channels. In Anon (Ed.), Annual International Conference on Universal Personal Communications - Record (Vol. 2, pp. 910-914)

Bit significance selective frequency diversity transmission - voice quality improvement in fading channels. / Kumagai, Tomoaki; Kobayashi, Kiyoshi; Kawazoe, Katsuhiko; Kubota, Shuji.

Annual International Conference on Universal Personal Communications - Record. ed. / Anon. Vol. 2 1996. p. 910-914.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kumagai, T, Kobayashi, K, Kawazoe, K & Kubota, S 1996, Bit significance selective frequency diversity transmission - voice quality improvement in fading channels. in Anon (ed.), Annual International Conference on Universal Personal Communications - Record. vol. 2, pp. 910-914, Proceedings of the 1996 5th IEEE International Conference on Universal Personal Communications, ICUPC'96. Part 1 (of 2), Cambridge, MA, USA, 96/9/29.
Kumagai T, Kobayashi K, Kawazoe K, Kubota S. Bit significance selective frequency diversity transmission - voice quality improvement in fading channels. In Anon, editor, Annual International Conference on Universal Personal Communications - Record. Vol. 2. 1996. p. 910-914
Kumagai, Tomoaki ; Kobayashi, Kiyoshi ; Kawazoe, Katsuhiko ; Kubota, Shuji. / Bit significance selective frequency diversity transmission - voice quality improvement in fading channels. Annual International Conference on Universal Personal Communications - Record. editor / Anon. Vol. 2 1996. pp. 910-914
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