The physical layer design for the uplink (UL) multiuser multi-input many outputs (MU-MIMO) in a wireless Local Area Network (WLAN) system

Japanese Patent JP6067944

B2

Certain aspects of the present disclosure provide methods and apparatus for uplink (UL) multiuser multiple-input, multiple-output (MU-MIMO) transmissions in a High Efficiency WLAN (HEW) system. One example method generally includes generating a packet having a preamble portion and transmitting the packet. The preamble portion typically includes a long training field (LTF); a first signal (SIG) field subsequent to the LTF; one or more other LTFs located subsequent to the first SIG field; and at least one second SIG field, wherein all SIG fields in the preamble portion, other than the first SIG field, are subsequent to the one or more other LTFs. Another example method generally includes receiving, from an apparatus, a packet having a preamble portion comprising tone-interleaved LTFs; and performing frequency offset adjustment on the packet based on the tone-interleaved LTFs.

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WO/2006/138135	EFFICIENT FILTER WEIGHT COMPUTATION FOR A MIMO SYSTEM

Bell Mani, Samia
Tundra, Rahul
Ban Nai, Didier John Richard
Van Zerst, Albert
Sampass, Hemance
Tian, Binh

JP2016527079A

January 25, 2017

July 16, 2014

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QUALCOMM INCORPORATED

H04J99/00; H04L27/26; H04W28/06; H04W72/04; H04W84/12

JP2008530909A
JP2013503566A
JP2012213170A

US20070097946

Richard Van Nee et al.,UL MU-MIMO for 11ac,IEEE 802.11-09/0852r0,2009年 7月
Eng Hwee Ong et al.,IEEE 802.11ac: Enhancements for Very High Throughput WLANs,2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Communications,2011年,pp.849-853

Kurata Masatoshi
Yoshihiro Fukuhara
Morisezo Iseki
Okumura Motohiro

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