An Efficient Channelizer Based on Nonuniform Filter Banks

In the multi-standard mobile base-station or software defined radio system, the received intermediate frequency (IF) signal usually consists of several subband signals with nonequal bandwidth and arbitrary band location. In order to channelize these signals efficiently, this paper presents an architecture based on nonuniform filter banks. In the proposed structure, the whole design of the nonuniform filter bank can be boiled down to design a prototype filter that meets some requirements. In addition to low cost in hardware, new structure can be optimized to reduce the computational complexity using the relationship among different decimators of different subband signals. Simulations are also presented to demonstrate the feasibility of the proposed structure