Design and FPGA implementation of auto-truncation based on spectrum accumulation

We propose a novel auto-truncation algorithm based on spectrum accumulation in anti-jamming receiver. The proposed strategy aims at the problem that the digital data becomes larger after several processes, such as FFT and IFFT. We study all parameters and steps of setting method, and point out the FPGA implementation tips. The result indicates that it can truncate digital signal of different significant bits automatically to output some required bits, and occupy less hardware resources.