Patent ID: 9042484
Filing Date: 2015-05-26
Classification: H04L,H04W

Abstract:
1. A method of transmitting a training signal in a Wireless Local Area Network (WLAN) system, the method comprising: generating, by a transmitting station, Very High Throughput-Long Training Field (VHT-LTF) symbols used for a plurality of target stations by applying a mapping matrix P to a VHT-LTF sequence when a total number of spatial streams for the plurality of target stations is set to seven (7) or eight (8), wherein a number of the VHT-LTF symbols is set to be the same as a number of columns of the mapping matrix P when the total number of spatial streams for the plurality of target stations is set to seven (7) or eight (8); and transmitting, by the transmitting station, the VHT-LTF symbols to the plurality of target stations, wherein the mapping matrix P is determined by: and wherein P and wherein the first seven rows of the mapping matrix P are applied when the total number of spatial streams for the plurality of target stations is set to seven (7).