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Systems and methods for suppressing interference in a wireless communication system

  • US 9,967,772 B1
  • Filed: 08/04/2016
  • Issued: 05/08/2018
  • Est. Priority Date: 07/25/2013
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving, through each receive antenna of m receive antennas of a receiving device, a training signal set transmitted from each transmit antenna of n transmit antennas of a first transmitting device that is a source of interference, whereinm and n are each greater than 1,the training signal set is included in a null data packet (NDP) sounding packet,the NDP sounding packet has a preamble that includesa field selected from a legacy short training field (L-STF), a legacy long training field (L-LTF) and a legacy signal field (LSIG), anda very high throughput long training field (VHTLTF) for each transmit antenna and a signaling field indicating the number of VHTLTEs;

    determining, from the training signal set, a channel estimate for a communication channel between the first transmitting device and the receiving device, wherein the channel estimate includes m-by-n description of the communication channel based on the data for each transmit antenna of the n transmit antennas;

    receiving, by the receiving device, a data signal from a second transmitting device; and

    filtering, based on the determined channel estimate, the data signal to suppress interference injected b the first transmitting device in the data signal transmitted by the second transmitting device.

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