Measurement of time delay spread in Sierra Leone

Author

Browne, S. ; Chandler, S.A.G. ; Stealey, K.

Author_Institution

Warwick Univ., Coventry, UK

fYear

1991

fDate

15-18 Apr 1991

Firstpage

961

Abstract

As part of the development at Warwick University of a distributed digital radio network for use in rural areas of developing countries, experimental characterization of the channel parameters of a number of radio paths within Sierra Leone was performed at a low VHF frequency (53 MHz). The network being developed will employ digital modulation at around 70 kbits/s, and operate in either a simplex or time-division duplex mode. Results were obtained in the different areas of the country, and for path lengths ranging up to 40 km, distances similar to the individual links in the proposed network. The measuring system was also used for field strength work, in order to give a more complete characterisation of each channel

Keywords

delays; digital radio systems; field strength measurement; radio networks; radiowave propagation; tropospheric electromagnetic wave propagation; 40 km; 53 MHz; Sierra Leone; VHF; Warwick University; channel parameters; developing countries; digital modulation; digital radio network; field strength; measuring system; path lengths; radio paths; radiowave propagation; rural areas; simplex operation; time delay spread measurement; time-division duplex mode;

fLanguage

English

Publisher

iet

Conference_Titel

Antennas and Propagation, 1991. ICAP 91., Seventh International Conference on (IEE)

Conference_Location

York

Print_ISBN

0-85296-508-7

Type

conf

Filename

98399