# Doc.: IEEE 802.11-10/1255r0 Submission TX Mask for Noncontiguous 160 MHz Date: 2010-11-07 Youhan Kim et al.Slide 1 Authors: November 2010.

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doc.: IEEE 802.11-10/1255r0 Submission TX Mask for Noncontiguous 160 MHz Date: 2010-11-07 Youhan Kim et al.Slide 1 Authors: November 2010

doc.: IEEE 802.11-10/1255r0 Submission Background TX mask for 20, 40, 80 and contiguous 160 MHz transmissions has been adopted [1, 2] Remaining is TX mask for noncontiguous 160 MHz transmissions November 2010 Youhan Kim et al.Slide 2

doc.: IEEE 802.11-10/1255r0 Submission Basic Concept Propose that each segment meets the TX mask for 80 MHz transmissions –Natural since each segment is 80 MHz wide Some details to think about November 2010 Youhan Kim et al.Slide 3 80 MHz For example, what is the exact TX spectral mask here? 80 MHz Mask

doc.: IEEE 802.11-10/1255r0 Submission Proposed Mask Place two 80 MHz TX masks, one for each segment –v1 = Mask value of one 80 MHz mask –v2 = Mask value of the other 80 MHz mask For frequencies where (-40 dBr < v1 < -20 dBr) and (-40 dBr < v2 < -20 dBr) –Mask value = v1 + v2 (sum in linear domain) For frequencies where NOT {(-20 dBr < v1 < 0 dBr) or (-20 dBr < v2 < 0 dBr)} –Mask value = max(v1, v2) For all other frequencies –Mask value = linearly interpolate (in dB domain) Atheros Communications, Inc. Slide 4

doc.: IEEE 802.11-10/1255r0 Submission Mask Construction Example 1 November 2010 Youhan Kim et al.Slide 5 80 MHz Blue: 80 MHz Mask Step 1: Sum mask where overlapping at -40 dBr ~ -20 dBr Step 2: Max. mask for everywhere else except -20 dBr ~ 0 dBr Step 3: Linear interpolation for -20 dBr ~ 0 dBr region -20 dBr -40 dBr -20 dBr -40 dBr -20 dBr -40 dBr 80 MHz

doc.: IEEE 802.11-10/1255r0 Submission Mask Construction Example 2 November 2010 Youhan Kim et al.Slide 6 80 MHz Blue: 80 MHz Mask Step 1: Sum mask where overlapping at -40 dBr ~ -20 dBr Step 2: Max. mask for everywhere else except -20 dBr ~ 0 dBr Step 3: Linear interpolation for -20 dBr ~ 0 dBr region -20 dBr -40 dBr -20 dBr -40 dBr -20 dBr -40 dBr

doc.: IEEE 802.11-10/1255r0 Submission Mask with 80 MHz Gap Between Segments Youhan Kim et al.Slide 7 -20 dBr -40 dBr -25 dBr -0 dBr -28 dBr November 2010 80 MHz 160 MHz 80 MHz

doc.: IEEE 802.11-10/1255r0 Submission Pre-Motion Do you support the transmit spectral mask for noncontiguous 160 MHz transmissions as described on slide 5, and to edit the specification framework document (11-09/0992) accordingly? November 2010 Youhan Kim et al.Slide 8

doc.: IEEE 802.11-10/1255r0 Submission References [1] Porat, R. et al., Spectral Mask and Flatness, IEEE 802.11-10/1109r1, Sep. 2010 [2] Stacey, R. et al., Specification Framework for TGac, IEEE 802.11-09/0992r15, Sep. 2010 November 2010 Youhan Kim et al.Slide 9

doc.: IEEE 802.11-10/1255r0 Submission Backup November 2010 Youhan Kim et al.Slide 10

doc.: IEEE 802.11-10/1255r0 Submission 80 MHz Channels November 2010 Youhan Kim et al.Slide 11 1441401361321281241201161121081041001651611571531496460565248444036 IEEE channel # 80 MHz Available only in US

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