Low Complexity Implementation of Carrier and Symbol Timing Synchronization for a Fully Digital Downhole Telemetry System
Yifei Yang, Joni Polili Lie, Alberto Quintero
Abstract
This paper presents a low complexity implementation of carrier phase and symbol timing synchronization on an OMAP-LI37 DSP-ARM dual core processor for a M -ary phase-shift-keying (M -PSK) based fully digital downhole telemetry system. The synchronization uses a data-aided algorithm (DA) that exploits information from the pilot symbols (PS) in each transmission to retrieve the timing epoch and carrier phase. Its implementation, in conjunction with the rest of the modem functionality, uses only the optimized TMS320C67x DSP and Math libraries to shorten the development time and reduce implementation complexity. Simulation results confirm its convergence to the modified Cramer-Rao bound (MCRB). Moreover, real-time implementation on a mono-conductor telemetry system employing quadrature phase-shfit keying (QPSK) modulation is performed to demonstrate its effectiveness in real-world environments.
BibTeX
@inproceedings{icassp2018_lowcomplexityimp,
title = {Low Complexity Implementation of Carrier and Symbol Timing Synchronization for a Fully Digital Downhole Telemetry System},
author = {Yifei Yang and Joni Polili Lie and Alberto Quintero},
booktitle = {ICASSP 2018},
year = {2018}
}