Linear phase filter bank design with unabridged control over bandwidth and center frequency of subbands

This paper presents a design of linear phase reconfigurable digital filter bank that offers unabridged control over the bandwidth as well as center frequency of each subband over entire Nyquist band. The proposed filter bank is designed by deftly integrating spectral parameter approximation (SPA) technique with the modified coefficient decimation method (MCDM) and abbreviated as SPA-MCDM-FB. A simple and efficient architecture with unabridged control over the bandwidth as well as center frequency of all subbands, lower group delay and substantial savings in gate counts over other filter banks make the SPA-MCDM-FB suitable for various wireless communication applications such as channelization and spectrum sensing in multi-standard Cognitive Radios.