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Phase locked loop synchronization for direct detection optical ppm communication systems
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Chen, C. C. Gardner, C. S. |
| Copyright Year | 1985 |
| Description | Receiver timing synchronization of an optical pulse position modulation (PPM) communication system can be achieved using a phase locked loop (PLL) if the photodetector output is properly processed. The synchronization performance is shown to improve with increasing signal power and decreasing loop bandwidth. Bit error rate (BER) of the PLL synchronized PPM system is analyzed and compared to that for the perfectly synchronized system. It is shown that the increase in signal power needed to compensate for the imperfect synchronization is small (less than 0.1 dB) for loop bandwidths less than 0.1% of the slot frequency. |
| File Size | 19635072 |
| Page Count | 55 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850021866 |
| Archival Resource Key | ark:/13960/t87h6g97t |
| Language | English |
| Publisher Date | 1985-05-01 |
| Access Restriction | Open |
| Subject Keyword | Communications And Radar Phase Locked Systems Signal To Noise Ratios Bit Error Rate Photometers Synchronism Signal Processing Time Measurement Pulse Position Modulation Pulse Communication Synchronized Oscillators Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
