J4 ›› 2014, Vol. 41 ›› Issue (5): 61-66+111.doi: 10.3969/j.issn.1001-2400.2014.05.011

• Original Articles • Previous Articles     Next Articles

Design of hybrid filter banks with fractional delays using mixed norm performance measures

WANG Wei;ZHANG Zijing   

  1. (National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an  710071, China)
  • Received:2013-05-17 Online:2014-10-20 Published:2014-11-27
  • Contact: WANG Wei E-mail:wangweidaiyu@163.com

Abstract:

A mixed norm performance measure is presented to design finite impulse response (FIR) digital synthesis filters of hybrid filter banks with fractional delays. The mixed norm performance measure is based on the peak value as well as the energy of the error signal. The FIR filters are designed to minimize the performance measure of a hybrid error system. This hybrid and multirate problem is reduced to a mixed norm optimization problem involving only the linear time-invariant, discrete-time system. The theory of linear matrix inequalities offers a tractable solution to such a synthesis problem. Numerical experiments show that the proposed approach yields a better performance compared to existing techniques.

Key words: hybrid filter bank, mixed norm, linear matrix inequality