Digital Modem Design Based on Multirate Filter Banks
Ramin Sadr, Dan Raphaeli, S.M. Hinedi · NASA Technical Reports Server (NASA) · 1994
A new approach for the architecture of an all digital modem design is presented. The key feature is a lower processing rate than that of the Nyquist rate (the input sampling rate) and even the symbol rate. The lower processing rate is achieved by the use of a parallel structure, based on multirate filter banks concepts. In this proposed scheme, matched filtering is implemented in the subbands of an analysis/synthesis filter bank.