On Determining a Best Pulse Shape for Multiple Access Ultra-Wideband Communication Systems

Pulse design is examined for multiple access ultrawideband communication systems with consideration of the transmitter pulse-shaping and the receiver filter at the same time, subject to a transmitter power constraint. It is shown that an appropriate sinc pulse not only conforms to required spectral emission constraints, but also optimizes the signal-to-noise-plus interference ratio of the ultra-wideband system when corrupted by multiple access interference. Compared with previously proposed pulse shapes, the sinc pulse proposed here achieves better error rate performance in multiple access environments without adding any implementation complexity. The design of ideal ultrawideband pulses is clarified in terms of properties of the spectral emission mask.