System and method for interference reduction in radio communications
First Claim
1. A method for separating a first signal from a second signal of a plurality of constituent signals within a composite signal, the method comprising:
- receiving, at a first clock rate, a first portion of the composite signal spanning a first period of time;
exponentiating the first portion to detect the first signal and the second signal within the composite signal and determine,a first modulation estimate of the first signal,a second modulation estimate of the second signal, andat least one symbol rate;
resampling the first portion based on the first modulation estimate and the second modulation estimate at x-times the at least one symbol rate to determine at least one symbol trajectory, at least one modulation type, and offset information related to an offset between the first signal and the second signal, x being an integer greater than zero;
determining a synthesized first signal and a synthesized second signal representing the first signal and the second signal within the first period of time at a second clock rate, the second clock rate being a multiple of the first clock rate, wherein the determining is performed at least partially off-chip.
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Abstract
This disclosure provides a system and method for separating a first signal from a second signal of a plurality of constituent signals within a composite signal. The method can include receiving a first portion of the composite signal at a first clock rate and exponentiating it to detect the first signal and the second signal within the composite signal and determine modulation estimates of the first and second signals and at least one symbol rate. The method can also include resampling the first portion based on the modulation estimates at x-times the at least one symbol rate to determine symbol trajectory, modulation type, and offset information between the first signal and the second signal. The method can include determining a synthesized first signal and a synthesized second signal representing the first signal and the second signal within the first period of time at a second clock rate that is a multiple of the first clock rate.
57 Citations
20 Claims
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1. A method for separating a first signal from a second signal of a plurality of constituent signals within a composite signal, the method comprising:
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receiving, at a first clock rate, a first portion of the composite signal spanning a first period of time; exponentiating the first portion to detect the first signal and the second signal within the composite signal and determine, a first modulation estimate of the first signal, a second modulation estimate of the second signal, and at least one symbol rate; resampling the first portion based on the first modulation estimate and the second modulation estimate at x-times the at least one symbol rate to determine at least one symbol trajectory, at least one modulation type, and offset information related to an offset between the first signal and the second signal, x being an integer greater than zero; determining a synthesized first signal and a synthesized second signal representing the first signal and the second signal within the first period of time at a second clock rate, the second clock rate being a multiple of the first clock rate, wherein the determining is performed at least partially off-chip. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device for separating a first signal from a second signal of a plurality of constituent signals within a composite signal, the device comprising:
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a receiver operable to receive, at a first clock rate, a first portion of the composite signal spanning a first period of time; one or more processors coupled to the receiver operable to, exponentiate the first portion to detect the first signal and the second signal within the composite signal and determine, a first modulation estimate of the first signal, a second modulation estimate of the second signal, and at least one symbol rate; and a regenerator modem disposed off-chip and configured to, in conjunction with the one or more processors, resample the first portion based on the first modulation estimate and the second modulation estimate at x-times the at least one symbol rate to determine at least one symbol trajectory, at least one modulation type, and offset information between the first signal and the second signal, x being an integer greater than zero; and determine a synthesized first signal and a synthesized second signal representing the first signal and the second signal within the first period of time at a second clock rate, the second clock rate being a multiple of the first clock rate. - View Dependent Claims (9, 10, 11, 12, 13)
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14. An apparatus for separating a first signal from a second signal of a plurality of constituent signals within a composite signal, the apparatus comprising:
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means for receiving, at a first clock rate, a first portion of the composite signal spanning a first period of time; means for exponentiating the first portion to detect the first signal and the second signal within the composite signal and determine, a first modulation estimate of the first signal, a second modulation estimate of the second signal, and at least one symbol rate; means for resampling the first portion based on the first modulation estimate and the second modulation estimate at x-times the at least one symbol rate to determine at least one symbol trajectory, at least one modulation type, and offset information between the first signal and the second signal, x being an integer greater than zero; means for determining a synthesized first signal and a synthesized second signal representing the first signal and the second signal within the first period of time at a second clock rate, the second clock rate being a multiple of the first clock rate, wherein the means for determining is performed at least partially off-chip. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification