Research Article
LUT-Based Efficient Impulse Shaping for Direct Synthesizing Digital Communication Signals at Arbitrary Symbol Rate
@INPROCEEDINGS{10.1007/978-3-319-78139-6_23, author={Ziyao Liu and Zhijie Wang and Jun Wang and Di Huang and Nangen Zhang}, title={LUT-Based Efficient Impulse Shaping for Direct Synthesizing Digital Communication Signals at Arbitrary Symbol Rate}, proceedings={Communications and Networking. 12th International Conference, ChinaCom 2017, Xi’an, China, October 10-12, 2017, Proceedings, Part II}, proceedings_a={CHINACOM}, year={2018}, month={4}, keywords={LUT-based Impulse shaping Direct synthesis Variable symbol rate}, doi={10.1007/978-3-319-78139-6_23} }- Ziyao Liu
Zhijie Wang
Jun Wang
Di Huang
Nangen Zhang
Year: 2018
LUT-Based Efficient Impulse Shaping for Direct Synthesizing Digital Communication Signals at Arbitrary Symbol Rate
CHINACOM
Springer
DOI: 10.1007/978-3-319-78139-6_23
Abstract
In this paper, we present a LUT-based efficient impulse shaping for direct synthesis of digital communication signal at arbitrary symbol rate. Compared with general approaches where sampling clock changes according to the symbol rate thus signal quality degrade as result of a complex analog hardware structure, or involving a fractional interpolation which consumes considerable computational resource, this new approach allows FPGA to synthesis variable high data rata signal with high quality directly at a fixed sampling rate which simplify the hardware structure and saves computational resource consumption. With some little modifications, the presented scheme could be easily adapted to 8PSK, 16QAM and other arbitrary amplitude-phase-modulation constellations. A hardware prototype has been built to verify the presented algorithms. In particular, we have achieved 4.8 Gsps parallel impulse shaping which supports input symbol rate ranging from 100 Ksps to 600 Msps.