TY - GEN
T1 - A new suppressed carrier synchronizer with reduced phase jitter for QAM systems
AU - Oren, T.
AU - Raphaeli, D.
N1 - Publisher Copyright:
© 2002 IEEE.
PY - 2000
Y1 - 2000
N2 - A new simple carrier phase synchronizer for QAM systems with reduced phase Jitter is proposed. A solution based on the extended Kalman filter (EKF) is applied as a near optimal solution for the tracking of time- varying phase of the carrier. In a conventional DPLL (digital phase lock loop) used in carrier phase recovery, the loop filter gain is a constant while in the new method the gain is adaptively changed such that a greatly reduced phase ,jitter variance is achieved. We derive the new scheme and compare it to the conventional first order DPLL, both analytically and by simulations for QAM modulations. We test the case of 16-QAM as an example. Simulation results show that the obtained phase error variance is much smaller in moderate and high SNR case, also with high carrier phase noise than the one achieved with a constant, loop filter gain.
AB - A new simple carrier phase synchronizer for QAM systems with reduced phase Jitter is proposed. A solution based on the extended Kalman filter (EKF) is applied as a near optimal solution for the tracking of time- varying phase of the carrier. In a conventional DPLL (digital phase lock loop) used in carrier phase recovery, the loop filter gain is a constant while in the new method the gain is adaptively changed such that a greatly reduced phase ,jitter variance is achieved. We derive the new scheme and compare it to the conventional first order DPLL, both analytically and by simulations for QAM modulations. We test the case of 16-QAM as an example. Simulation results show that the obtained phase error variance is much smaller in moderate and high SNR case, also with high carrier phase noise than the one achieved with a constant, loop filter gain.
UR - http://www.scopus.com/inward/record.url?scp=34250889518&partnerID=8YFLogxK
U2 - 10.1109/EEEI.2000.924466
DO - 10.1109/EEEI.2000.924466
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AN - SCOPUS:34250889518
T3 - 21st IEEE Convention of the Electrical and Electronic Engineers in Israel, Proceedings
SP - 443
EP - 447
BT - 21st IEEE Convention of the Electrical and Electronic Engineers in Israel, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 21st IEEE Convention of the Electrical and Electronic Engineers in Israel, IEEEI 2000
Y2 - 11 April 2000 through 12 April 2000
ER -