00543cam a22001812  4500001001100000005001700011008004100028020001700069040001500086100003100101245006300132250001300195260004800208300001900256650004300275650004000318852000300358000001299620151217154416.0090518s         xx           000 0 eng d  a8120334113 :  aKABUcKABU1 aCouch, Leon W.@000017003810aDigital and analog communication systems /cLeon W. Couch.  a7th  ed.  aNew Delhi :bPrentice-Hall of India,c2007.  axxvii, 751  p. 0aTelecommunication systems.@0000154288 0aDigital communications.@00001576851