Method and apparatus for positioning pulses in time
AssigneeTime Domain Corporation
InventorsJames L. Richards, Mark D. Roberts, Marcus H. Pendergrass
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Abstract
A coding method specifies pulse positioning over time according to a time layout about a time reference where a pulse can be placed at any location within the time layout. The method generates time-hopping codes having predefined properties, and a coded pulse train based on the time-hopping codes and the time layout. The time reference may be fixed or non-fixed and can be a time position of a preceding or a succeeding pulse. In addition, the predefined properties can be autocorrelation, cross-correlation, or spectral properties.
Claims28
A method for positioning pulses, comprising the steps of:
- specifying pulse positioning over time in accordance with contiguous repeating time layouts about a time reference,
- generating a time-hopping code;
- and
- mapping pulses to the contiguous repeating time layouts based on the time hopping code, wherein said pulses can be placed at any location within said contiguous repeating time layouts.
An impulse transmission system comprising:
- a Ultra Wideband Transmitter;
- a Ultra Wideband Receiver;
- and
- said Ultra Wideband Transmitter and said Ultra Wideband Receiver employ a time-hopping code, wherein said code specifies positioning of pulses over time in accordance with contiguous repeating time layouts about a time reference, and said pulses can be placed at any location within said contiguous repeating time layouts.
Dependencies are inferred from the claim text.