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Ppm receiver implemented in software
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kang, Edward Vilnrotter, Victor Lee, Clement Gray, Andrew Lay, Norman Srinivasan, Meera |
| Copyright Year | 2010 |
| Description | A computer program has been written as a tool for developing optical pulse-position- modulation (PPM) receivers in which photodetector outputs are fed to analog-to-digital converters (ADCs) and all subsequent signal processing is performed digitally. The program can be used, for example, to simulate an all-digital version of the PPM receiver described in Parallel Processing of Broad-Band PPM Signals (NPO-40711), which appears elsewhere in this issue of NASA Tech Briefs. The program can also be translated into a design for digital PPM receiver hardware. The most notable innovation embodied in the software and the underlying PPM-reception concept is a digital processing subsystem that performs synchronization of PPM time slots, even though the digital processing is, itself, asynchronous in the sense that no attempt is made to synchronize it with the incoming optical signal a priori and there is no feedback to analog signal processing subsystems or ADCs. Functions performed by the software receiver include time-slot synchronization, symbol synchronization, coding preprocessing, and diagnostic functions. The program is written in the MATLAB and Simulink software system. The software receiver is highly parameterized and, hence, programmable: for example, slot- and symbol-synchronization filters have programmable bandwidths. |
| File Size | 121800 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20100009684 |
| Archival Resource Key | ark:/13960/t26b2475m |
| Language | English |
| Publisher Date | 2010-03-01 |
| Access Restriction | Open |
| Subject Keyword | Man/system Technology And Life Support Digital Systems Preprocessing Broadband Photometers Receivers Signal Processing Pulse Position Modulation Time Synchronization Computer Programs Analog To Digital Converters 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 |
