Effects of Channel Narrowing in Small Zone Fm Mobile Communication Systems

Masayuki Sakamoto, Masaharu Hata

Research output: Contribution to journalArticle

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 thus is determined as a synthesis of available channel number and geographical frequency reuse. From this viewpoint, relationship between the modulation index and spectrum utilization factor is discussed under the Rayleigh fading condition, with and without diversity. To take into account the actual traffic condition not only uniform but also a concentrated traffic distribution condition is considered. 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 to achieve efficient spectrum utilization.

Original languageEnglish
Pages (from-to)14-18
Number of pages5
JournalIEEE Transactions on Vehicular Technology
Volume36
Issue number1
DOIs
Publication statusPublished - 1987
Externally publishedYes

Fingerprint

Mobile telecommunication systems
Mobile Communication
Mobile Systems
Communication Systems
Modulation
Traffic
Rayleigh fading
Spacing
Reuse
Rayleigh Fading
Deviation
Synthesis

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Aerospace Engineering
  • Automotive Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics

Cite this

Effects of Channel Narrowing in Small Zone Fm Mobile Communication Systems. / Sakamoto, Masayuki; Hata, Masaharu.

In: IEEE Transactions on Vehicular Technology, Vol. 36, No. 1, 1987, p. 14-18.

Research output: Contribution to journalArticle

Sakamoto, Masayuki ; Hata, Masaharu. / Effects of Channel Narrowing in Small Zone Fm Mobile Communication Systems. In: IEEE Transactions on Vehicular Technology. 1987 ; Vol. 36, No. 1. pp. 14-18.
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