EFFECTS OF CHANNEL NARROWING IN SMALL ZONE FM MOBILE COMMUNICATION SYSTEMS.

Masayuki Sakamoto, Masaharu Hata

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

2 Citations (Scopus)

Abstract

In small-zone (cellular) FM mobile communication systems, greater geographical reuse is achieved when the modulation index is larger. A large index, however, imposes a small number of channels. The spectrum utilization factor in total is thus determined as a synthesis of the available number of channels and geographical frequency reuse. The relationship between the modulation index and spectrum utilization factor is discussed for Rayleigh fading condition, with and without diversity. The spectrum utilization factor for the concentrated traffic model is introduced. It is shown that the optimum peak deviation that realizes the most efficient spectrum utilization is from 3 to 4 kHz for uniform traffic distribution, and 2 kHz for concentrated traffic distribution. These results show that narrow channel spacing, such as 12. 5 kHz, is better than the conventional 25 kHz or wider channel spacing for achieving efficient spectrum utilization. Characteristics for the static condition without fading are also discussed.

Original languageEnglish
Title of host publicationIEEE Vehicular Technology Conference
PublisherIEEE
Pages273-278
Number of pages6
Publication statusPublished - 1986
Externally publishedYes

Fingerprint

Mobile telecommunication systems
Modulation
Rayleigh fading

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Sakamoto, M., & Hata, M. (1986). EFFECTS OF CHANNEL NARROWING IN SMALL ZONE FM MOBILE COMMUNICATION SYSTEMS. In IEEE Vehicular Technology Conference (pp. 273-278). IEEE.

EFFECTS OF CHANNEL NARROWING IN SMALL ZONE FM MOBILE COMMUNICATION SYSTEMS. / Sakamoto, Masayuki; Hata, Masaharu.

IEEE Vehicular Technology Conference. IEEE, 1986. p. 273-278.

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

Sakamoto, M & Hata, M 1986, EFFECTS OF CHANNEL NARROWING IN SMALL ZONE FM MOBILE COMMUNICATION SYSTEMS. in IEEE Vehicular Technology Conference. IEEE, pp. 273-278.
Sakamoto M, Hata M. EFFECTS OF CHANNEL NARROWING IN SMALL ZONE FM MOBILE COMMUNICATION SYSTEMS. In IEEE Vehicular Technology Conference. IEEE. 1986. p. 273-278
Sakamoto, Masayuki ; Hata, Masaharu. / EFFECTS OF CHANNEL NARROWING IN SMALL ZONE FM MOBILE COMMUNICATION SYSTEMS. IEEE Vehicular Technology Conference. IEEE, 1986. pp. 273-278
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