A Bit Timing Extraction Technique.
Abstract
This technical report contains a description of a bit-timing extraction technique which can be used to derive bit-timing (a clock) from a UHF satellite digital communications channel disturbed by the effects of ionospheric scintillation. The bit-timing extraction technique is described as a part of a modulator/demodulator which uses a binary FSK modulator and a post-detection demodulator. In addition a convolutional encoder with a feedback decoder are an integral part of the modulator/demodulator. The functioning of the encoder-decoder requires an accurate clock even during signal fading periods of up to five seconds. The bit-timing extraction technique was conceived to fulfill this need. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1976
- Accession Number
- ADA031207
Entities
People
- James J. Foshee
Organizations
- Air Force Research Laboratory