International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, California / A DSP modem is often designed as a set of processing blocks that replace the corresponding blocks of an analog prototype. Such a design is sub-optimal, inheriting legacy compromises made in the analog design while discarding important design options unique to the DSP domain. In part I of this two part paper, we used multirate processing to transform a digital down converter from an emulation of the standard analog architecture to a DSP based solution that reversed the order of frequency selection, filtering, and resampling. We continue this tack of embedding traditional processing tasks into multirate DSP solutions that perform multiple simultaneous processing tasks.

International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, California / Digital signal processing has inexorably been woven into the fabric of every function performed in a modern radio communication system. In the rush to the marketplace, we have fielded many DSP designs based on analog prototype solutions containing legacy compromises appropriate for the technology of a time past. As we design the next generation radio we pause to examine and review past solutions to past radio problems. In this review we discover a number of DSP design methods and perspectives that lead to cost and performance advantages for use in the next generation radio.