Method and apparatus for specifying pulse characteristics using a code that satisfies predefined criteria
First Claim
1. A coding method for a pulse transmission system, comprising the steps of:
- specifying at least one of a temporal characteristic and a non-temporal pulse characteristic in accordance with at least one of a temporal characteristic value layout and a non-temporal characteristic value layout having one or more allowable and non-allowable regions;
generating one or more codes having predefined properties; and
generating a pulse train by mapping generated codes to the specified characteristic value layouts, wherein a code or a subset of a code satisfies predefined acceptance criteria.
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Abstract
A coding method for a pulse transmission system specifies temporal and/or non-temporal pulse characteristics according to temporal and/or non-temporal characteristic value layouts having one or more allowable and non-allowable regions. The method generates codes having predefined properties. The method generates a pulse train by mapping codes to the characteristic value layouts, where the codes satisfy predefined criteria. In addition, the predefined criteria can limit the number of pulse characteristic values within a non-allowable region. The predefined criteria can be based on relative pulse characteristic values. The predefined criteria can also pertain to spectral properties and to correlation properties. The predefined criteria may pertain to code length and to the number of members of a code family. The pulse train characteristics may pertain to a subset of the pulse train.
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Citations
36 Claims
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1. A coding method for a pulse transmission system, comprising the steps of:
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specifying at least one of a temporal characteristic and a non-temporal pulse characteristic in accordance with at least one of a temporal characteristic value layout and a non-temporal characteristic value layout having one or more allowable and non-allowable regions;
generating one or more codes having predefined properties; and
generating a pulse train by mapping generated codes to the specified characteristic value layouts, wherein a code or a subset of a code satisfies predefined acceptance criteria. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An impulse transmission system comprising:
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a Time Modulated Ultra Wideband Transmitter;
a Time Modulated Ultra Wideband Receiver; and
said Time Modulated Ultra Wideband Transmitter and said Time Modulated Ultra Wideband Receiver employ a code that specifies a temporal characteristic in accordance with a temporal characteristic value layout or a non-temporal pulse characteristic in accordance with a non-temporal characteristic value layout, or any combination thereof, wherein said temporal characteristic value layout and said non-temporal characteristic value layout have one or more allowable regions and one or more non-allowable regions, and said code or a subset of said code satisfies predefined acceptance criteria. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification