Coherent signal analyzer
First Claim
1. A method for analyzing a characteristic of a transmitter, a receiver, or a wireless propagation channel, the method comprising:
- obtaining at least one receiver signal resulting from at least one transmitter signal that has propagated from a remote transmitter to the receiver through the wireless propagation channel, each receiver signal comprising a signal taken from one or more antenna ports of a receiver, and each transmitter signal comprising a signal provided to one or more antenna ports of a transmitter;
forming at least a first signal pair which comprisesa first receiver signal and a first transmitter signal other than one to which the first receiver signal is attributable, orfirst and second receiver signals which are obtained from spatially-separated receiver antennas, orfirst and second receiver signals which are attributable to different transmitter signals, orfirst and second receiver signals which are obtained from non-orthogonally polarized portions of one or more receiver antennas, ora coherent beam signal associated with a plurality of receiver antennas or a coherent beam signal associated with a plurality of transmitter antennas, ora linear combination transmitter signal comprising a linear combination of two or more transmitter signals or a linear combination receiver signal comprisinga linear combination of two or more receiver signals;
determining amplitude and phase information of the same plurality of frequency components across a bandwidth of each signal in the first signal pair;
determining a set of comparison values for the first signal pair by comparing respective frequency component phases or respective frequency component amplitudes of the signals in the first signal pair; and
analyzing a characteristic of the set of comparison values.
2 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods for analyzing a characteristic of a transmitter, a receiver, or a propagation channel are disclosed. At least one receiver signal resulting from at least one transmitter signal that has propagated through a propagation channel can be obtained. A first signal pair can be formed from a first receiver signal and a first transmitter signal, or from first and second receiver signals obtained from spatially-separated receiver antennas, or from first and second receiver signals which are attributable to different transmitter signals. Amplitude and phase information of a plurality of frequency components for each signal in the first signal pair can be determined. A set of comparison values for the first signal pair can be determined by comparing respective frequency component phases or respective frequency component amplitudes. A characteristic of the set of comparison values can then be analyzed.
33 Citations
29 Claims
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1. A method for analyzing a characteristic of a transmitter, a receiver, or a wireless propagation channel, the method comprising:
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obtaining at least one receiver signal resulting from at least one transmitter signal that has propagated from a remote transmitter to the receiver through the wireless propagation channel, each receiver signal comprising a signal taken from one or more antenna ports of a receiver, and each transmitter signal comprising a signal provided to one or more antenna ports of a transmitter; forming at least a first signal pair which comprises a first receiver signal and a first transmitter signal other than one to which the first receiver signal is attributable, or first and second receiver signals which are obtained from spatially-separated receiver antennas, or first and second receiver signals which are attributable to different transmitter signals, or first and second receiver signals which are obtained from non-orthogonally polarized portions of one or more receiver antennas, or a coherent beam signal associated with a plurality of receiver antennas or a coherent beam signal associated with a plurality of transmitter antennas, or a linear combination transmitter signal comprising a linear combination of two or more transmitter signals or a linear combination receiver signal comprising a linear combination of two or more receiver signals; determining amplitude and phase information of the same plurality of frequency components across a bandwidth of each signal in the first signal pair; determining a set of comparison values for the first signal pair by comparing respective frequency component phases or respective frequency component amplitudes of the signals in the first signal pair; and analyzing a characteristic of the set of comparison values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system comprising:
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at least one receiver input port and signal channel for obtaining at least one receiver signal resulting from at least one remote transmitter signal that has propagated through a wireless propagation channel, each receiver signal comprising a signal taken from one or more antenna ports of a receiver, and each transmitter signal comprising a signal provided to one or more antenna ports of a transmitter; and a processor configured to form at least a first signal pair which comprises a first receiver signal and a first transmitter signal other than one to which the first receiver signal is attributable, or first and second receiver signals which are obtained from spatially-separated receiver antennas, or first and second receiver signals which are attributable to different transmitter signals, or first and second receiver signals which are obtained from non-orthogonally polarized portions of one or more receiver antennas, or a coherent beam signal associated with a plurality of receiver antennas or a coherent beam signal associated with a plurality of transmitter antennas, or a linear combination transmitter signal comprising a linear combination of two or more transmitter signals or a linear combination receiver signal comprising a linear combination of two or more receiver signals; determine amplitude and phase information of the same plurality of frequency components across the bandwidth of each signal in the first signal pair; determine a set of comparison values for the first signal pair by comparing respective frequency component phases or respective frequency component amplitudes of the signals in the first signal pair; and analyze a characteristic of the set of comparison values. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification