Digital shaped gaussian monocycle pulses in ultra wideband communications
First Claim
1. A digital system of shaping a Gaussian monocycle pulse comprising:
- a digital derivative Gaussian monocycle pulse with the different center frequencies and sampling rates coupled to a digital multi-band shaping FIR filter in which the shaped Gaussian monocycle pulse can be stored into the data memory.
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Abstract
Using the 1st derivative ultra-narrow Gaussian monocycle pulse passed through a digital shaping multi-band FIR filter may generate a digital ultra-narrow shaped Gaussian monocycle pulse. The spectrum output of the shaped Gaussian monocycle pulse directly meets the FCC'"'"'s mask restrictions of the emission limits for indoor UWB system. The digital system of generating shaping Gaussian monocycle pulse may be implemented in the off-line operation to save the processing power. The pulse generator in the UWB transceiver has flexibility and scalability of selecting only one shaped pulse out of the data memory banks in which allocate all of the shaped Gaussian monocycle pulses with the different center frequencies. With a shaped pulse generator, an UWB transceiver does not need either a digital shaping transmission filter or an analog shaping transmission filter, with coupling to a D/A converter before or after, during a real-time operation.
24 Citations
15 Claims
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1. A digital system of shaping a Gaussian monocycle pulse comprising:
a digital derivative Gaussian monocycle pulse with the different center frequencies and sampling rates coupled to a digital multi-band shaping FIR filter in which the shaped Gaussian monocycle pulse can be stored into the data memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A shaped pulse generator comprising:
data memory banks, selectable COMMUTER unit with a switch, and pulse shaping bank selector. - View Dependent Claims (10, 11, 12, 13)
- 14. The D/A converter in the UWB transceiver needs to only operate on the duration of the shaped Gaussian monocycle pulse to save the processing power.
Specification