Open AccessSynchronization for IR‐UWB System Using a Switching Phase Detector‐Based Impulse Phase‐Locked Loop
Author(s) -
Zheng Lin,
Liu Zhenghong,
Wang Mei
Publication year - 2012
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.12.0111.0299
Subject(s) - delay locked loop , phase detector , phase locked loop , impulse (physics) , detector , synchronization (alternating current) , loop (graph theory) , electronic engineering , phase synchronization , control theory (sociology) , impulse radio , phase (matter) , computer science , time synchronization , physics , engineering , phase noise , electrical engineering , real time computing , telecommunications , channel (broadcasting) , ultra wideband , voltage , mathematics , control (management) , artificial intelligence , quantum mechanics , combinatorics
Conventional synchronization algorithms for impulse radio require high‐speed sampling and a precise local clock. Here, a phase‐locked loop (PLL) scheme is introduced to acquire and track periodical impulses. The proposed impulse PLL (iPLL) is analyzed under an ideal Gaussian noise channel and multipath environment. The timing synchronization can be recovered directly from the locked frequency and phase. To make full use of the high harmonics of the received impulses efficiently in synchronization, the switching phase detector is applied in iPLL. It is capable of obtaining higher loop gain without a rise in timing errors. In different environments, simulations verify our analysis and show about one‐tenth of the root mean square errors of conventional impulse synchronizations. The developed iPLL prototype applied in a high‐speed ultra‐wideband transceiver shows its feasibility, low complexity, and high precision.