A new high-speed pulse shaping algorithm with arbitrary up-sampling rate

Abstract:

To solve the problem of pulse shaping with arbitrary up-sampling rate in the high speed digital communication system, a new general high-speed algorithm based on look-up table is proposed, which can flexibly change sample rate. The algorithm uses FIR filter structure to realize arbitrary and flexible up-sampling rate conversion within in a range, by mapping different sample-rate conversion to the address problemof look-up table. Meanwhile, the proposed algorithm combining with pipeline structure and improved full parallel distributed arithmetic (DA) realizes the pulse shaping filter function at high speed, which is also validated through hardware platform. The proposed algorithm not only occupies less resource, but also implements at high speed with strong stability. In addition, the algorithm can flexibly realize arbitrary up-sampling rate conversion within a range.