Spectral Mask and Flatness Month Year doc.: IEEE 802.11-yy/xxxxr0 September 2010 Spectral Mask and Flatness Date: 2010-09-13 Authors: Ron Porat Broadcom 16340 West Bernardo Dr., San Diego, CA 92127 858-521-5409 rporat@broadcom.com Vinko Erceg 858-521-5885 verceg@broadcom.com Robert Stacey Intel robert.j.stacey@intel.com Eldad Perahia Ning Zhang Atheros 5480 Great America Parkway, Santa Clara, CA 95054, USA ning@atheros.com Youhan Kim youhan.kim@atheros.com Youngsoo Kim Samsung Electronics Mt. 14-1 Nongseo-Ri, Giheung-Eup, Yongin-Si, Gyeonggi-Do, Korea 449-712 kimyoungsoo@samsung.com Chunhui (Allan) Zhu Samsung Electronics 75 W Plumeria Dr. San Jose CA 95134 USA +1-408-544-5667 c.zhu@samsung.com Hongyuan Zhang Marvell 5488 Marvell Ln, Santa Clara, CA 95054 408-222-1837 hongyuan@marvell.com Raja Banerjea 408-222-3719 rajab@marvell.com Hemanth Sampath Qualcomm San Diego hsampath@qualcomm.com VK Jones vkjones@qualcomm.com Yongho Seok LG Electronics, Inc. 533, Hogye-1dong, Dongan-Gu, Anyang-Shi, Kyungki-Do, 431-749, 82-31-450-1947 yongho.seok@lge.com Daewon Lee LG Electronics, Inc 82-31-450-7897 daewon.lee@lge.com Cheong ETRI 161 Gajeong-dong, Yuseong-gu, +82 42 860 5635 minho@etri.re.kr Jae Seung Lee +82 42 860 1326 jasonlee@etri.re.kr Vinko Erceg, Broadcom John Doe, Some Company
Month Year doc.: IEEE 802.11-yy/xxxxr0 September 2010 Abstract Propose changing maximum adjacent channel rejection to be the same as 802.11a Propose keeping the spectral mask linear with bandwidth Propose relaxing in band spectral flatness Spectral flatness not used for beamforming in 802.11n - devices capable of receiving beamforming transmissions already will be receiving transmission not conforming to the spectral flatness requirement. Allows more flexibility in shaping the spectrum to meet out-of-band emissions Channel fades are much larger than the relaxed spectral flatness requirements Vinko Erceg, Broadcom John Doe, Some Company
September 2010 Legacy Mask Vinko Erceg, Broadcom
Proposed VHT 20/40/80/160MHz Mask September 2010 Proposed VHT 20/40/80/160MHz Mask Vinko Erceg, Broadcom
Legacy Spectral Flatness September 2010 Legacy Spectral Flatness Vinko Erceg, Broadcom
Proposed VHT 20/40/80/160 Spectral Flatness September 2010 Proposed VHT 20/40/80/160 Spectral Flatness Noncontiguous 160 MHz devices may transmit a contiguous 160 MHz waveform by placing its two 80 MHz segments adjacent to each other. It would be difficult for such transmissions to meet the +4/-4 dB requirement near the center of the contiguous 160 MHz waveform Two non-contiguous 80MHz transmissions shall use the 80MHz mask in each 80MHz transmission Vinko Erceg, Broadcom
September 2010 Straw Poll #1 Do you support spectral mask requirements as outlined in slide 4? Vinko Erceg, Broadcom
September 2010 Straw Poll #2 Do you support spectral flatness requirements as outlined in slide 6? Vinko Erceg, Broadcom