Name
Abstract | ||
|---|---|---|
Timing recovery is crucial for magnetic recording systems. A conventional timing recovery loop (also known as the phase-locked loop) consists of a timing error detector (TED), a loop filter, and a voltage controlled oscillator (VCO), all of which process the samples in a sequential manner. This sequence of operations in the timing recovery loop performs well if the timing error is a small fraction of the bit interval. However, in the cycle-slip regions, the timing error is comparable to the bit interval, and the loop fails. In this paper, we represent the timing error in magnetic recording systems using a discrete Markov model that does not confine the timing error to only small fractions of the bit interval. By utilizing such a model, we derive an optimal baud-rate processing unit that does not perform tasks in sequence, but jointly. The derived unit has a similar structure as the classical first-order phase-locked loop (PLL). Simulation results show that the new detector outperforms the standard Mueller and Muller phase-locked loop. This performance gain is substantial if the timing error process is extremely noisy or if there is residual frequency-offset. For moderately low-noise timing errors without residual frequency-offset, the improvement over the Mueller and Muller phase-locked loop is just marginal. |
Year | DOI | Venue |
|---|---|---|
2006 | 10.1109/ICC.2006.255295 | 2006 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-12 |
Keywords | Field | DocType |
markov model,phase locked loops,voltage controlled oscillator,detectors,phase lock loop,phase detection,frequency,error correction,frequency offset | Phase-locked loop,Residual,Computer science,Control theory,Error detection and correction,Voltage-controlled oscillator,Real-time computing,Static timing analysis,Phase detector,Baud,Detector | Conference |
ISSN | Citations | PageRank |
1550-3607 | 1 | 0.36 |
References | Authors | |
8 | 5 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Wei Zeng | 1 | 1 | 0.36 |
| M. Fatih Erden | 2 | 65 | 8.49 |
| Aleksandar Kavcic | 3 | 191 | 20.83 |
| Erozan M. Kurtas | 4 | 29 | 4.62 |
| Raman Venkataramani | 5 | 31 | 9.58 |