期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2012
卷号：3
期号：3
页码：4053-4058
出版社：TechScience Publications
摘要：This paper analyzes and presents simulation and experimental results for a hardware implementation of a lowoverhead digital coherent burst demodulator for onboard signaling channel systems using short bursts. This implementation is based on digitizing a received signal after a low-frequency IF conversion, AGC and performing all demodulation functions using digital signal processing (DSP) techniques. Demodulation with very low overhead is made possible by storing a burst in memory. A novel feed forward loop preambleless structure performs carrier recovery. Symbol-timing and carrier frequency-offset estimations are performed by block processes using the error signal resulting from differential demodulation.
