1. Power-efficient impulse radio ultrawideband pulse generator based on the linear sum of modified doublet pulses
- Author
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Chigo Okonkwo, S. T. Abraha, Amj Ton Koonen, Eduward Tangdiongga, Electro-Optical Communication, and Center for Wireless Technology Eindhoven
- Subjects
Physics ,Signal processing ,business.industry ,Pulse generator ,Chip ,Transfer function ,Pulse shaping ,Atomic and Molecular Physics, and Optics ,Pulse (physics) ,Optics ,Electronic engineering ,Wireless ,Photonics ,business ,Telecommunications - Abstract
We propose a new and power-efficient impulse radio ultawideband (IR-UWB) pulse design concept. The proposed concept is based on a linear sum of modified doublet pulses. The proposed concept is both simulated and experimentally demonstrated. The experimental demonstration employs a photonic scheme that generates the designed pulse using two main steps, mainly optical shaping and differential detection. The optical shaping is performed using a single electro-optic modulator biased in the nonlinear portion of its transfer function, and the differential detection is performed using a balanced photodetector. The generated IR-UWB pulse is fully Federal Communications Commission compliant, even in the highly power-restricted global positioning system band. The proposed optical scheme has potential to be integrated on a compact optical chip and thus suitable for reliable, low-cost, high-speed, short-range UWB wireless access, such as in-building networks.
- Published
- 2011