A baseband codec for digital cellular telephony. - Kadaba R. Lakshmikumar; David W. Green; Krishnaswamy Nagaraj; King-Hon Lau; Oscar E. Agazzi; Jeffrey R. Barner; Reza S. Shariatdoust; Gene A. Wilson; Tuan N. Le; M. R. Dwarakanath; Jacques G. Ruch; Jit Kumar; et al. (IEEE J. Solid State Circuits, 1991)