Variable Bandwidth Digital Channelization Algorithm and Engineering Realization

According to the design requirements of multi-user, multi-rate satellite modems, this paper proposes an adaptive digital channelization synthesis and decomposition algorithm for the number of users and different bandwidth signals. The algorithm is engineered on a hardware platform realization. By adjusting the working frequencies and extracting the results of DFT, variable users and signal decompositions with variable bandwidth can be achieved; or variable users and variable bandwidth signal syntheses can be achieved by adding zeros at the DFT input in practice.