subband adaptive filter using polyphase FFT filterbank

I'm looking for the Matlab or C code for subband adaptive filtering
using polyphase FFT filterbank implementation. I'm reading the paper

D. Morgen and C. Thi
A delayless subband adaptive filter Architecture
IEEE Trans. on Signal Processing. Vol. 43, No. 8, Aug 1995

I wonder if anyone had actually implementated the filter. 

Thanks.

Dan