Title :
A method of non-data-aided carrier recovery with modulation identification
Author :
Morelos-Zaragoza, Robert H. ; Umebayashi, Kenta ; Kohno, Ryuji
Author_Institution :
Sony Comput. Sci. Labs. Inc., Tokyo, Japan
Abstract :
A non-data aided carrier recovery technique using modulation format identification is proposed. This technique can also be interpreted as a modulation identification method that is robust against static phase and frequency offsets. The performance of the proposed technique is studied and analytical expressions derived for the mean acquisition time to detect lock in the cases of M-PSK, M=2,4,8, and 16-QAM modulation, with respect to frequency offset and signal-to-noise ratio. The results are verified with Monte Carlo simulations. The main advantage of the proposed method lies in its simpler implementation and faster lock detection, when compared to conventional methods
Keywords :
digital phase locked loops; identification; phase shift keying; quadrature amplitude modulation; synchronisation; 16-QAM modulation; M-PSK modulation; Monte Carlo simulations; digital PLL; digital phase-locked loop; frequency offset; lock detection; mean acquisition time; modulation format identification; modulation identification method; nondata aided carrier recovery; phase lock detectors; signal-to-noise ratio; static phase; synchronization; Computer science; Detectors; Digital modulation; Frequency; Phase detection; Phase locked loops; Phase modulation; Robustness; Switches; Wireless communication;
Conference_Titel :
Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-7206-9
DOI :
10.1109/GLOCOM.2001.966311
