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Method and system for implementing a single weight (SW) single channel (SC) MIMO system with no insertion loss

  • US 8,098,683 B2
  • Filed: 06/30/2005
  • Issued: 01/17/2012
  • Est. Priority Date: 10/06/2004
  • Status: Active Grant
First Claim
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1. A method for processing signals in a receiver, the method comprising:

  • 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, each RF chain comprising a respective band pass filter, a respective low noise amplifier and a respective mixer;

    adjusting, by circuitry, a phase and an amplitude of the local oscillator to adjust the phase and the amplitude of a first of received signals in relation to a second of the plurality of received signals, wherein the circuitry is communicatively disposed between the local oscillator and a mixer of a first RF chain, 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 to prevent insertion loss;

    combining an output signal of the first processing path of the first RF chain, which has been adjusted in the phase and the amplitude by the circuitry, and an output signal of the second processing path of the second RF chain;

    converting the combined output signal from analog to digital;

    receiving the combined output signal by a digital baseband processor;

    providing, by the digital baseband processor based on the combined output signal, a first output signal, a second output signal and a third output signal, wherein the first output signal comprises a voice signal, wherein the second output signal comprises data, and wherein the third output signal comprises channel estimates and a timing signal that specifies a location of signal clusters in a time domain;

    receiving, by the weight generator, wherein the weight generator is communicatively disposed between the circuitry and the baseband processor; and

    generating the at least one control signal, by the weight generator, based on at least the third output signal and sending the at least one control signal to the circuitry, the first chain and the second chain.

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