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Synchronization tracking in pulse position modulation receiver
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Vilnrotter, Victor A. |
| Copyright Year | 1987 |
| Description | A clock pulse generator for decoding pulse position modulation in an optical communication receiver is synchronized by a delay tracking loop which multiplies impulses of a data pulse by the square wave clock pulses from the generator to produce positive impulses when the clock pulse is of one level, and negative impulses when the clock pulse is of another level. A delay tracking loop integrates the impulses and produces an error signal that adjusts the delay so the clock pulses will be synchronized with data pulses. A dead-time tau sub d is provided between data pulses of an interval tau sub p in the data pulse period tau. When synchronized, the average number of positive impulses integrated will equal the average number of negative impulses over the continuous stream of data pulses. |
| File Size | 383737 |
| Page Count | 7 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870011774 |
| Archival Resource Key | ark:/13960/t6838ps6g |
| Language | English |
| Publisher Date | 1987-03-03 |
| Access Restriction | Open |
| Subject Keyword | Communications And Radar Error Signals Position Indicators Photomultiplier Tubes Optical Communication Data Transmission Pulse Generators Time Measurement Pulse Modulation Time Lag Fiber Optics Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
