Pulseshaping in UWB Systems Using Semidefinite Programming with Non-Constant Upper Bounds. - Christian R. Berger; Michael Eisenacher; Holger Jaekel; Friedrich K. Jondral (PIMRC, 2006)

Improving the UWB Pulseshaper Design Using Nonconstant Upper Bounds in Semidefinite Programming. - Christian R. Berger; Michael Eisenacher; Shengli Zhou; Friedrich K. Jondral (J. Sel. Topics Signal Processing, 2007)