Systems and methods for parallel signal cancellation
First Claim
1. A processing engine, comprising:
- a plurality of matrix generators, wherein each matrix generator is configured for generating a matrix and wherein each matrix comprises one or more vectors with each vector comprising elements of a signal path selected for cancellation;
a processor communicatively coupled to the matrix generators and configured for generating a cancellation operator from each matrix; and
a plurality of applicators, wherein each applicator is communicatively coupled to the processor and configured for applying one of the cancellation operators in parallel to an input signal to substantially cancel one or more selected channels.
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Abstract
The present invention provides systems and methods for parallel interference suppression. A processing engine is used to substantially cancel a plurality of signal paths and selected channel(s) of these signal paths interfering with a selected signal. The processing engine includes a plurality of matrix generators that are used to generate matrices with each matrix comprising elements of one or more of the interfering signal paths and channels selected for cancellation. The processing engine also includes one or more processors for processing the matrices to generate cancellation operators. A plurality of applicators applies the cancellation operators to parallel input signals to substantially cancel the interfering signal from each input signal. These input signals may include received signals and/or reference codes. The embodiments disclosed herein may be particularly advantageous to systems employing CDMA (e.g., such as cdmaOne and cdma2000), Wideband CDMA, Broadband CDMA, UMTS and Global Positioning System (“GPS”) signals.
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Citations
99 Claims
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1. A processing engine, comprising:
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a plurality of matrix generators, wherein each matrix generator is configured for generating a matrix and wherein each matrix comprises one or more vectors with each vector comprising elements of a signal path selected for cancellation;
a processor communicatively coupled to the matrix generators and configured for generating a cancellation operator from each matrix; and
a plurality of applicators, wherein each applicator is communicatively coupled to the processor and configured for applying one of the cancellation operators in parallel to an input signal to substantially cancel one or more selected channels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of canceling interference, comprising:
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generating a plurality of matrices, wherein each matrix comprises one or more vectors with each vector comprising elements of a signal path and one or more channels of the signal path selected for cancellation;
generating a cancellation operator from each of the matrices; and
applying each cancellation operator in parallel to an input signal to substantially cancel one or more selected channels. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A system for canceling interference, comprising:
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means for generating a plurality of matrices, wherein each matrix comprises one or more vectors with each vector comprising elements of a signal path and one or more channels of the signal path selected for cancellation;
means for generating a cancellation operator from each of the matrices; and
means for applying each cancellation operator in parallel to an input signal to substantially cancel one or more selected channels. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59)
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60. A mobile handset, comprising:
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a receiver configured for receiving a radio signal; and
a processing engine communicatively coupled to the receiver and comprising a plurality of matrix generators, wherein each matrix generator is configured for generating a matrix and wherein each matrix comprises one or more vectors with each vector comprising elements of one or more selected channels of a signal path selected for cancellation, a processor communicatively coupled to the matrix generators and configured for generating a cancellation operator from each matrix, and a plurality of applicators, wherein each applicator is communicatively coupled to the processor and configured for applying one of the cancellation operators to an input signal to substantially cancel one or more selected channels. - View Dependent Claims (61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78)
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79. A connection element, comprising:
a plurality of selectors, wherein each selector is configured for selecting an input signal to a processing finger, wherein the input signal comprises a digitized radio signal or an substantially interference canceled signal having one or more signal paths canceled. - View Dependent Claims (80, 81)
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82. A processing engine, comprising:
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a plurality of matrix generators, wherein each matrix generator is configured for generating a matrix and wherein each matrix comprises one or more vectors with each vector comprising elements of a signal path and one or more channels selected for cancellation;
a processor communicatively coupled to the matrix generators and configured for generating a cancellation operator from each matrix; and
a plurality of applicators, wherein each applicator is communicatively coupled to the processor and configured for applying one of the cancellation operators to an input signal to substantially cancel one or more selected channels, wherein each cancellation operator is a projection operator configured for projecting a selected signal substantially orthogonal to the one or more selected channels. - View Dependent Claims (83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99)
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Specification