Bipolar waveform modulation for ultra wideband (UWB) communication networks
First Claim
1. For use in an ultra wideband (UWB) communication system, a method for communicating binary data, having logical “
- 0” and
“
1”
value types, as a sequence of UWB pulses, the method comprising;
encoding binary data of one value type as positive UWB pulses and binary of the other value type as negative UWB pulses; and
detecting the presence of positive and negative UWB pulses using a zero-level sensing threshold, thereby increasing immunity to noise.
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Abstract
A method for ultra wideband (UWB) communication in which UWB pulses encode binary data as either normal or inverted (anti-podal) pulses. In the case of pulses of a carrier signal, each pulse has the carrier signal either inverted or in phase, that is, shifted by 180°, or not. For example, a binary “1” may be encoded as a normal or non-inverted pulse and a binary “0” as an inverted pulse. After each carrier pulse is rectified and filtered, detection is effected using a threshold value of zero, resulting in increased immunity to noise, compared with detection of unidirectional pulses. In one aspect of the invention, data pertaining to multiple communication channels are encoded in time-divided portions of each UWB pulse.
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Citations
5 Claims
-
1. For use in an ultra wideband (UWB) communication system, a method for communicating binary data, having logical “
- 0” and
“
1”
value types, as a sequence of UWB pulses, the method comprising;
encoding binary data of one value type as positive UWB pulses and binary of the other value type as negative UWB pulses; and
detecting the presence of positive and negative UWB pulses using a zero-level sensing threshold, thereby increasing immunity to noise. - View Dependent Claims (2, 3, 4, 5)
- 0” and
Specification