00310nam a22001097a 4500020001400000040000900014082002000023100001500043245005200058260003800110650005200148  a003058969  cNUST  a621.380413bLAT  aB.P. Lathi  aModern Degital and Analog Communication Systems  aNew York:bHolt, Rinehart,c1983.  2Modern Degital and Analog Communication Systems