TY - BOOK AU - Stremler, Ferrel G. TI - Introduction to communication systems SN - 0-201-18498-2 PY - 1977/// CY - Rading, Mass. PB - Addison-Wesley N1 - Resúmenes y problemas al final de los capítulos.; Apéndices: A) Selected mathematical tables; B) Decibels; C) Broadcast frequency bands; D) Commercial television transmissions; E) Telephone channels; F) Some comercial preemphasis/deemphasis systems; G) A table of Bessel functions; H) Stereo AM; I) A table of gaussian probabilities.; Índice alfabético p. 749-757.; Introduction.; Orthogonality and signal representations.; The Fourier transform and applications.; Spectral density and correlations.; Amplitude modulation.; Angle modulation.; Pulse modulation.; Probability and random variables.; Information and digital transmission.; Digital modulation ER -