Pulse transmission transmitter including a higher order time derivate filter
Systems and methods for pulse-transmission low-power communication modes are disclosed. A pulse transmission transmitter includes: a clock; a pseudorandom polynomial generator coupled to the clock, the pseudorandom polynomial generator having a polynomial load input; an exclusive-OR gate coupled to the pseudorandom polynomial generator, the exclusive-OR gate having a serial data input; a programmable delay circuit coupled to both the clock and the exclusive-OR gate; a pulse generator coupled to the programmable delay circuit; and a higher order time derivative filter coupled to the pulse generator. The systems and methods significantly reduce lower-frequency emissions from pulse transmission spread-spectrum communication modes, which reduces potentially harmful interference to existing radio frequency services and users and also simultaneously permit transmission of multiple data bits by utilizing specific pulse shapes.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-96OR22464
- Assignee:
- Lockheed Martin Energy Research Corporation (Oak Ridge, TN)
- Patent Number(s):
- 6,625,229
- Application Number:
- 10/082,773
- OSTI ID:
- 1174508
- Country of Publication:
- United States
- Language:
- English
Slot and Frame Synchronisation in Optical Fiber PPM Systems with Dispersed Pulse Shapes
|
journal | January 1994 |
|
conference | April 1997 |
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