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Gain Factor/Matrix for Whole Link Channel Reciprocity in TDD Mimo Relay System

  • US 20100151793A1
  • Filed: 11/19/2009
  • Published: 06/17/2010
  • Est. Priority Date: 11/21/2008
  • Status: Active Grant
First Claim
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1. A method comprising:

  • measuring at an apparatus received power of a first signal received from a first entity, and measuring at the apparatus received power of a second signal received from a second entity;

    determining by the apparatus a gain factor using the measured received powers of the first signal and of the second signal; and

    forwarding a signal by either;

    for the case in which transmit power from the apparatus to the second entity is considered as a benchmark, using the gain factor to determine a second signal transmit power and forwarding the second signal from the apparatus to the first entity using the determined second signal transmit power;

    orfor the case in which the transmit power from the apparatus to the first entity is considered as the benchmark, using the gain factor to determine a first signal transmit power and forwarding the first signal from the apparatus to the second entity using the determined first signal transmit power.

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