Architecture for ultra-wideband radio
First Claim
1. A method for receiving and processing a radio signal in a transmitter-receiver environment, comprising:
- receiving the radio signal having at least two pulses and a fixed time between the at least two pulses;
generating a larger-amplitude signal with an amplitude greater than an amplitude of the received radio signal;
replicating the larger-amplitude signal to generate at least two duplicate signals;
generating a timing sequence;
replicating the timing sequence into a plurality of timing sequences each delayed in time; and
outputting at least a first counter value responsive to a value of one of the plurality of timing sequences being valid when the value of at least one of the at least two duplicate signals transitions.
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Abstract
The invention includes a method for transmitting and detecting high speed Ultra Wideband pulses across a wireless interface. The transmitter includes a serializer and pulse generator. The receiver comprises a fixed delay line, multiplier, local serializer (with a sequence matching the transmitter), digital delay lines, low noise amplifier and logic fan-out buffer along with an array of D flip-flop pairs. Each flip-flop pair is enabled, at fixed time increments, to detect signals at a precise time; the timing is controlled by the pseudo-random sequence generated by the local serializer. A local tunable oscillator is controlled by detecting the phase change of the incoming signal and applying compensation to maintain the phase alignment and clock synchronization of the receiver to the clock reference of the transmitter. The invention uses a pair of pulses with a fixed delay and then relies on mixing the two to provide better noise immunity.
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Citations
29 Claims
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1. A method for receiving and processing a radio signal in a transmitter-receiver environment, comprising:
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receiving the radio signal having at least two pulses and a fixed time between the at least two pulses; generating a larger-amplitude signal with an amplitude greater than an amplitude of the received radio signal; replicating the larger-amplitude signal to generate at least two duplicate signals; generating a timing sequence; replicating the timing sequence into a plurality of timing sequences each delayed in time; and outputting at least a first counter value responsive to a value of one of the plurality of timing sequences being valid when the value of at least one of the at least two duplicate signals transitions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A receiver, comprising:
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a receiving stage that receives a radio signal having at least two pulses and a fixed time between the at least two pulses; a signal modification stage that generates a signal having an amplitude larger than an amplitude of the received radio signal; a fan-out stage that replicates the larger-amplitude signal and generates at least two duplicate signals based at least in part on the replicated larger-amplitude signal; a sequence generator stage that serially generates a timing sequence; at least one sequence delay stage that replicates the timing sequence into a plurality of timing sequences each delayed in time; and at least one counter control stage that outputs a counter value responsive to a pulse of one of the duplicate larger-amplitude signals and one of the plurality of timing sequences. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification