Title :
Analytical distribution of linearly modulated cochannel interferers
Author_Institution :
Dipartimento di Elettronica, Inf. e Sistemistica, Bologna Univ., Italy
fDate :
1/1/1997 12:00:00 AM
Abstract :
The closed form expressions of the probability density function (PDF), the cumulative distribution function (CDF) and the characteristic function of the disturbance due to a multilevel cochannel interferer are obtained. The analysis assumes L-level amplitude shift keying (L-ASK) modulated signals, nonreturn to zero (NRZ) pulses, transmission over a distortion-free channel and matched filter reception. The distribution for the multiple cochannel interferers case can then be obtained by means of the characteristic function method. As an application example, the closed-form expression of the error-floor for an L-ASK system in the presence of one cochannel interferer is given. The comparison with respect to the Gaussian approximation is also discussed
Keywords :
amplitude shift keying; cochannel interference; filtering theory; matched filters; multipath channels; probability; statistical analysis; Gaussian approximation; NRZ pulses; amplitude shift keying; analytical distribution; characteristic function method; closed form expressions; cumulative distribution function; distortion free channel; error floor; linearly modulated cochannel interferers; matched filter reception; modulated signals; multilevel cochannel interferer; multipath environment; multiuser applications; nonreturn to zero pulses; probability density function; Amplitude modulation; Amplitude shift keying; Distortion; Distribution functions; Filtering theory; Matched filters; Optical signal processing; Probability density function; Pulse modulation; Signal analysis;
Journal_Title :
Communications, IEEE Transactions on
