Channel impulse response (CIR)-based and secondary synchronization channel (SSC)-based (frequency tracking loop (FTL)/time tracking loop (TTL)/channel estimation
US8494070B2 · kind B2 · utility
30Cited by
2References
42Claims
0Family size
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Key dates
| Filing date | May 12, 2010 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | May 28, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/022
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and systems are disclosed for channel estimation and frequency tracking in mobile communication systems. Particularly, various ways of using the time domain impulse channel response based on the staggered frequency domain pilot tones are presented that enable rapid frequency error estimation and frequency tracking control. A mathematical model is developed that provides a convenient metric for evaluating tolerable frequency error, as well as modes for switching between channel impulse response (CIR)-based and secondary synchronization channel (SSC)-based frequency tracking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.