TY - BOOK AU - Couch, Leon W TI - Digital and analog communication systems SN - 9780131424920 SN - 200604855 U1 - 621.382 COU PY - 2007/// CY - Upper Saddle River, N.J PB - Pearson/Prentice Hall KW - Digital communications KW - Telecommunication systems N1 - Includes bibliographical references (p. 710-722) and index ER -