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Channel estimation method and apparatus for use in wireless communication system

  • US 10,270,624 B2
  • Filed: 10/13/2016
  • Issued: 04/23/2019
  • Est. Priority Date: 10/13/2015
  • Status: Active Grant
First Claim
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1. A channel estimation method of a terminal, the method comprising:

  • receiving downlink signals at resource elements (REs) for reference signals from a base station;

    converting the received downlink signals to time-domain entries using a matched filter;

    organizing time-domain entries of output from the matched filter into groups based on delay;

    determining whether an energy sum of time-domain entries of each group is greater than a first threshold;

    selecting the time-domain entries belonging to a group of which the energy sum is greater than the first threshold into a candidate group for channel estimation;

    performing zero forcing (ZF) on the time-domain entries belonging to the candidate group; and

    removing ZF output from the received downlink signals.

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