Chirp Communications
AssigneeCambridge Silicon Radio Limited
InventorPaul Dominic Hiscock
Life of this patent
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Abstract
A method for receiving chirp signals at a receiver device according to a protocol in which each chirp signal has a gradient known to the receiver device, the method comprising: receiving a chirp signal having a first gradient g; generating a reference chirp signal having a second gradient g′, wherein the second gradient g′ differs from the first gradient g by a fixed value v; multiplying the reference chirp signal and the received chirp signal so as to form a mixed chirp signal; and detecting the received chirp signal by correlating the mixed chirp signal with a fixed gradient correlating chirp signal.
Claims20
A method for receiving chirp signals at a receiver device according to a protocol in which each chirp signal has a gradient known to the receiver device, the method comprising:
- receiving a chirp signal having a first gradient g;
- generating a reference chirp signal having a second gradient g′, wherein the second gradient g′ differs from the first gradient g by a fixed value v;
- multiplying the reference chirp signal and the received chirp signal so as to form a mixed chirp signal;
- and
- detecting the received chirp signal by correlating the mixed chirp signal with a fixed gradient correlating chirp signal.
A receiver device for receiving chirp signals according to a protocol in which each chirp signal has a gradient known to the receiver device, the receiver device comprising:
- a receiver configured to receive a chirp signal having a first gradient g;
- a chirp generator configured to generate a reference chirp signal having a second gradient g′, wherein the second gradient g′ differs from the first gradient g by a fixed value v;
- a chirp multiplier configured to multiply the reference chirp signal and the received chirp signal so as to form a mixed chirp signal;
- and
- a correlator configured to detect the received chirp signal by correlating the mixed chirp signal with a fixed gradient correlating chirp signal.
Dependencies are inferred from the claim text.