Patent ID: 9686002
Date: 2017-06-20
CPC Classifications: H04B,H04L,H04W

Claim:
1. A sniffer apparatus having a plurality of antennas and supporting multiple-input multiple-output (MIMO) reception of wireless local area network (WLAN) communications between a wireless access point (WAP) node and associated station nodes; and the sniffer apparatus comprising: a packet identification module configured to identify a received WLAN communication packet as one of a single user (SU) and a multi-user (MU) communication packet; a channel modeler configured to model a communication channel for the received packet as one of a set of single-channel parameters and a set of multi-channel parameters responsive to the SU and MU packet identification respectively, of the packet identification module; a single-channel equalization matrix calculator responsive to an SU identification of the received packet by the packet identification module to calculate a single-channel equalization matrix for equalizing the received packet based on the set of single-channel parameters from the channel modeler; a multi-channel equalization matrix calculator responsive to an MU identification of the received packet by the packet identification module to calculate a multi-channel equalization matrix based on the set of multi-channel parameters from the channel modeler; and an equalizer configured to equalize the received communication packet utilizing the single-channel equalization matrix responsive to identification of an SU packet and the multi-channel equalization matrix responsive to identification of an MU packet by the packet identification module.