Modern architectures and ASIC implementations for communications applications

Today i rapidly evolving digital communications infrashrcture has been driven forward by the steady advances in integrated circuits. For economic as well as technical reasons,' the point is rapidly approaching at which IC performance breakthroughs are less likely to derive from semiconductor technology scaling and, more than eve); will have to come from architectural and circuit-design innovations. At the same time, major high-tech companies are less focused on cutting-edge research than ever before. Fortunately, university research and startup companies canfill the innovation gap. We present here a number ofnovel architectures and CMOS integrated circuitprototypes we've created at UCLA'and at Pentomics, Inc. Examples covered include: * Direct digital synthesizers * Digital mixers and modulators * Trigonometric interpolators * Rectangular-to-polar converters * Single-chip reconjgurable FFTNFFTprocessors