Title :
A comparison between stationary and mobile digital VHF radio channels and channel models
Author :
Swarts, Francis ; Ferreira, H.C.
Author_Institution :
Cybern. Lab., Rand Afrikaans Univ., Johannesburg, South Africa
fDate :
8/30/1991 12:00:00 AM
Abstract :
This paper presents results of a study undertaken to determine Fritchman (1967) channel models for mobile as well as stationary (linking two points geographically fixed with respect to each other) VHF radio channels. These models were investigated with respect to four modulation schemes FSK, DPSK, QPSK and 8-ary PSK. Predictions of P (m,n), the probability that a block of n digits will contain exactly m errors, are presented for each of the channels and modulation schemes investigated. Values of the amount of memory in each of these channels, as well as capacities are also presented. Some conclusions are drawn from these results
Keywords :
channel capacity; digital radio systems; error correction codes; frequency shift keying; mobile radio systems; phase shift keying; 8-ary PSK; DPSK; FSK; QPSK; VHF radio channels; capacities; channel models; memory; mobile radio channels; probability; stationary radio channels; Cybernetics; Differential quadrature phase shift keying; Digital modulation; Error analysis; Error correction; Frequency shift keying; Joining processes; Laboratories; Phase shift keying; Quadrature phase shift keying;
Conference_Titel :
Communications and Signal Processing, 1991. COMSIG 1991 Proceedings., South African Symposium on
Conference_Location :
Pretoria
Print_ISBN :
0-7803-0040-8
DOI :
10.1109/COMSIG.1991.278227
