Title :
Optimal training symbol placement for frequency acquisition on magnetic recording channels
Author :
Nayak, Aravind R. ; Barry, John R. ; McLaughlin, Steven W.
Abstract :
The modified Cramer-Rao bound (CRB) on frequency estimation error variance for magnetic recording channels is derived as a function of training symbol locations, and it is shown that placing the known symbols half at the beginning and half at the end of the sector minimizes the CRB. Simulation results show a 1.5 dB gain in loss-of-lock rate over having all known symbols at the start of the sector.
Keywords :
channel estimation; frequency estimation; magnetic recording; 1.5 dB; frequency acquisition; frequency estimation error variance; loss-of-lock rate; magnetic recording channels; modified Cramer-Rao bound; optimal training symbol placement; Detectors; Digital magnetic recording; Frequency estimation; Gain; Industrial training; Magnetic recording; Phase locked loops; Poles and towers; Pulse modulation; Timing;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1464241
