METHOD AND SYSTEM FOR IMPLEMENTING A SINGLE WEIGHT (SW) SINGLE CHANNEL (SC) MIMO SYSTEM WITH NO INSERTION LOSS
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Accused Products
Abstract
In a RF communications system, aspects for implementing a single weight single channel MIMO system with no insertion loss may comprise generating at least one control signal that is utilized to control at least one of a plurality of received signals in a WCDMA and/or HSDPA system. A phase of a first of the plurality of received signals may be adjusted outside of a first processing path used to process that signal so that it is equivalent to a phase of at least a second of the plurality of received signals. A gain in the first processing path may be equivalent to a gain in a second processing path that is utilized to process the second of the plurality of received signals. The control signal may be utilized to adjust a phase and/or an amplitude of at least one of a plurality of received signals.
16 Citations
50 Claims
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1-30. -30. (canceled)
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31. A method for processing signals in a receiver, comprising:
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generating, by a weight generator, at least one control signal that is utilized to control at least one of a plurality of received signals, wherein each received signal corresponds to a respective RF chain that corresponds to a respective antenna; adjusting, by circuitry, a phase and an amplitude of a local oscillator to adjust the phase and the amplitude of a first of the plurality of received signals in relation to a second of the plurality of received signals, wherein the mixer receives an output signal of the circuitry, wherein the circuitry adjusts the phase and the amplitude of the local oscillator based on the at least one control signal, and wherein the circuit adjusts the phase and the amplitude of the first of the plurality of received signals outside of RF chains corresponding to the respective antennas; and combining a first output signal of a first processing path of a first RF chain and a second output signal of a second processing path of a second RF chain, wherein the first output signal has been adjusted in the phase or the amplitude by the circuitry. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. A wireless communications device, comprising:
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a weight generator that generates at least one control signal that is utilized to control at least one of a plurality of received signals, wherein each received signal corresponds to a respective RF chain that corresponds to a respective antenna; and circuitry communicatively disposed between a local oscillator and a mixer, the mixer being part of a first RF chain and receiving an output signal of the circuitry, wherein the circuitry adjusts a phase and an amplitude of a local oscillator based on the at least one control signal, wherein the circuitry adjusts the phase and the amplitude of the local oscillator to adjust the phase and the amplitude of a first of the plurality of received signals in relation to a second of the plurality of received signals, wherein the circuit adjusts the phase and the amplitude of the first of the plurality of received signals outside of RF chains corresponding to respective antennas to prevent insertion loss, wherein an output signal of a first processing path of the first RF chain and an output signal of a second processing path of a second RF chain are combined into a combined signal. - View Dependent Claims (46, 47, 48, 49)
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50. A wireless cellular device, comprising:
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a weight generator that generates at least one control signal that is utilized to control at least one of a plurality of received signals; circuitry communicatively disposed between a local oscillator and a mixer, the mixer being part of a first RF chain and receiving an output signal of the circuitry, wherein the circuitry adjusts a phase and an amplitude of a local oscillator based on the at least one control signal, wherein the circuitry adjusts the phase and the amplitude of the local oscillator to adjust the phase and the amplitude of a first of the plurality of received signals in relation to a second of the plurality of received signals, wherein the circuit adjusts the phase and the amplitude of the first of the plurality of received signals outside of RF chains corresponding to respective antennas to prevent insertion loss, wherein an output signal of a first processing path of the first RF chain and an output signal of a second processing path of a second RF chain are combined into a combined signal; and a processor that receives the combined signal and provides, based on at least the received combined signal, a first output signal that includes channel estimates and a timing signal that specifies a location of signal clusters in a time domain.
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Specification