Name
Abstract | ||
|---|---|---|
The carrier recovery is one of the most difficult problems for the communication systems applying the high-order QAM modulation technique. The decision-directed PLL is widely used carrier recovery technique for QPSK, which does not work for higher order QAMs. The reduced-constellation phase locked loop (RC-PLL) was proposed for the case of higher-order QAM. However, its performance in frequency offset detection still does not satisfy the system requirement especially when the offsets are large. In this paper, modified RC-PLL with tracking and hold algorithm (MRC-PLL) is proposed in order to improve the performance of RC-PLL in detecting phase offset as well as frequency offset in higher order QAM. Proposed MRC-PLL provides the acquisition range up to 45 degree phase offset and about up to 10 kHz frequency offset with the reduced acquisition time by half in comparison with RC-PLL. |
Year | DOI | Venue |
|---|---|---|
2007 | 10.1109/ISCAS.2007.378597 | ISCAS |
Keywords | Field | DocType |
reduced-constellation phase locked loop,carrier recovery,communication systems,quadrature phase shift keying,phase locked loops,decision-directed pll,quadrature amplitude modulation,modified reduced constellation pll,qpsk,high-order qam modulation,satisfiability,phase lock loop,bit error rate,higher order,communication system,degradation,frequency offset,phase detection | Phase-locked loop,Carrierless amplitude phase modulation,Quadrature amplitude modulation,Computer science,Control theory,Frequency offset,Carrier recovery,QAM,Electronic engineering,In-phase and quadrature components,Phase-shift keying | Conference |
ISSN | ISBN | Citations |
0271-4302 | 1-4244-0921-7 | 2 |
PageRank | References | Authors |
0.45 | 2 | 3 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Chan-Woo Park | 1 | 30 | 5.23 |
| Jinbeom Lee | 2 | 2 | 0.45 |
| Young-Lok Kim | 3 | 17 | 4.26 |