Timing and Carrier Acquisition in Upstream CATV Channels
- Resource Type
- Conference
- Authors
- Pelet, Eric R.; Salt, J. Eric; Fast, Douglas
- Source
- IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics IEEE Industrial Electronics, IECON 2006 - 32nd Annual Conference on. :3267-3272 Nov, 2006
- Subject
- Components, Circuits, Devices and Systems
Power, Energy and Industry Applications
Timing
Circuits
Field programmable gate arrays
Frequency estimation
Demodulation
Time division multiple access
Transmitters
Environmentally friendly manufacturing techniques
Electronic equipment
Frequency synchronization
- Language
- ISSN
- 1553-572X
This paper provides synchronization circuits to be used in the upstream receiver of a CATV network. These circuits, which are structured for implementation in an FPGA, are for detecting the beginning of a burst, recovering timing and determining the carrier frequency offset. These circuits comply with the North American standard ANSI/SCTE. Timing and carrier frequency acquisition occur simultaneoulsy. It is found that the timing recovery circuit is quite insensitive to carrier frequency offsets as large as 30 degrees per symbol. The standard deviation on the timing error is less than 1.3% of a symbol for Eb/NO greater than 20 dB. The standard deviation on the frequency error is less than 0.6 degrees per symbol for Eb/NO greater than 20 dB.