Title :
Probability of error for selection diversity as a function of dwell time
Author :
Barnard, Johannes H. ; Pauw, Christoff K.
Author_Institution :
Dept. of Electron. & Comput. Eng., Pretoria Univ., South Africa
fDate :
8/1/1989 12:00:00 AM
Abstract :
An expression is derived for the probability of error of an N th-order selection diversity system for the case where the receiver is forced to swell on one channel for several symbols before being allowed to make a decision regarding the best channel. It is found that the time-varying nature of a fading channel causes significant degradation of the probability of error when the dwell time becomes longer than about 10% of the inverse of the fading bandwidth of the channel. The onset of degradation is a function of the signal-to-noise ratio and of the order of diversity. Specific probabilities of error are calculated for differential phase-shift keyed modulation (DPSK). However, the calculations can be done for any other modulation technique
Keywords :
diversity reception; error statistics; fading; phase shift keying; probability; telecommunication channels; DPSK; Nth-order selection diversity system; Rayleigh fading channel; differential phase-shift keyed modulation; dwell time; error probability; fading bandwidth; fading channel; signal-to-noise ratio; Bandwidth; Degradation; Density functional theory; Differential quadrature phase shift keying; Diversity methods; Error analysis; Fading; Frequency shift keying; Probability density function; Switches;
Journal_Title :
Communications, IEEE Transactions on
