Yutaka Jitsumatsu Tohru Kohda Chip-Asynchronous Version of Welch Bound: Gaussian Pulse Improves BER Performance. 351-363 2006 conf/seta/2006 SETA http://dx.doi.org/10.1007/11863854_31 db/conf/seta/seta2006.html#JitsumatsuK06