Couch, Leon W. Digital and analog communication systems / Leon W. Couch, II. - 8th ed. - Upper Saddle River, N.J. : Pearson, c2013. - xxi, 762 pages : illustration ; 24 cm. Includes index ISBN: 9780132915380 (alk. paper) 0132915383 (alk. paper) Subjects--Topical Terms: Telecommunication systems.Digital communications. LC Class. No.: / .C69 2013