Title :
Performance of wideband signaling for slowly fading frequency selective channels
Author :
Howard, Steven J. ; Wallace, Mark S.
Author_Institution :
Raytheon Co., Marlboro, MA, USA
Abstract :
The optimum performance of a wideband system operating over slowly fading frequency selective channels is evaluated. Although it is well known that system performance is directly related to the product of RMS delay spread of the channel and operating bandwidth of the system, as well as to signal-to-noise ratio, the exact relationship is not known and approximations are generally applied. A procedure for deriving the average probability of error as the performance measure is given. The analysis is formulated using a frequency domain approach that applies equally well to direct spread or frequency hopped spread spectrum systems or to systems that use adaptive decision feedback equalization or adaptive maximum-likelihood sequence estimation. The analysis is used to study a simple uncoded system, and to verify a channel model that is used for simulation. The method is illustrated for a troposcatter channel described by a delay power spectrum, or equivalently, a frequency correlation function
Keywords :
error statistics; fading; frequency-domain analysis; spread spectrum communication; telecommunication channels; telecommunication signalling; RMS delay spread; adaptive decision feedback equalization; adaptive maximum-likelihood sequence estimation; average probability of error; frequency domain approach; frequency hopped spread spectrum systems; optimum performance; slowly fading frequency selective channels; troposcatter channel; wideband signaling; Adaptive systems; Bandwidth; Delay; Fading; Frequency domain analysis; Frequency estimation; Signal to noise ratio; Spread spectrum communication; System performance; Wideband;
Conference_Titel :
Military Communications Conference, 1992. MILCOM '92, Conference Record. Communications - Fusing Command, Control and Intelligence., IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0585-X
DOI :
10.1109/MILCOM.1992.244084