1. August 2008
doc: IEEE c
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [Responses to comments in document ]
Date Submitted: [26 August, 2008]
Source: [Kazu Takahashi(1) ,Raymond Yu Zhan(2), Michael Sim(2), Bruce Bosco(3)]
Company: [(1)Matsushita Electronic Ind. Co., Ltd.(Panasonic), (2)Panasonic Singapore Labs Pte,
(3)Motorola Inc.]
Address: [Blk 1022 Tai Seng Ave # Tai Seng Industrial Estate Singapore ]
Voice: [ ], FAX: [ ], (1), (3) ]
Re: []
Abstract: []
Purpose: [Responses to questions brought up during April conference calls.]
Notice: This document has been prepared to assist the IEEE P It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.
Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P

2. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
August 2008
doc: IEEE xxx c
Objective
Comments to following CID numbers in [ c-lb43-comments]
79, 594, 600, 630
<author>, <company>

3. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
August 2008
doc: IEEE xxx c
Comment to CID # 594 and # 600
CID#
594
Clause
12.2
Page 63
Line
3-12
Why is OOK modulation defined? While implementation complexity for the transmitter and receiver can be quite low if only an RF switch is used, it will be very difficult for an OOK device based on RF switching to meet the specified spectral mask. And, the implementation complexity for pi/2-BPSK is quite low. Negatives for OOK include (1) 1/2 the total power is expended in the carrier and (2) the PSD is extremely wide if an implementation based on RF switches is used.
Kindly remove the OOK modulation option or be very clear about how the PSD mask is to be met.
CID#
600
Clause
Page 65
Line 9-12
Class 4 SC PHY rates provide few advantages over Class 1, and they have serious drawbacks (e.g., PSD mask, power lost in carrier).
Please remove class 4 devices from the draft.
Responses
Class 4 is for low-cost low complexity devices, such as handheld/portable devices. Its implementation is simple, and requires very low power consumption.
Implementation feasibility of low complexity and low power consumption OOK system can be found in document [ c]
OOK
Signal can fit inside HSI mask as shown at the next slide.
The carrier spectral line is limited by a carrier mask as illustrated as CID #79 and #630.
DAMI
Signal can fit inside HSI mask -- refer to document [ c]
<author>, <company>

4. <month year>
doc.: IEEE <doc#>
August 2008
doc: IEEE xxx c
Comment to CID # 594 and # 600
OOK signal can fit inside the HSI mask, except the single carrier spectral line.
Slide 4
Page 4
<author>, <company>

5. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
August 2008
doc: IEEE xxx c
Comment to CID # 79 and # 630
CID # 79
Clause
Page 91
Line 26
No specification on the OOK spectral line component.
We need a "dB" number on the limits of the OOK spectral line. Currently it is allowed but unspecified.
CID#
630
Clause
Page 91
Line
26-27
What deviation from the mask is allowed for OOK devices at the carrier frequency?
Please specify.
Responses
A carrier mask is proposed to limit the power and deviation of OOK carrier spectral line. This mask is defined as 40dBr within the frequency band of [-6MHz, +6MHz], while RBW=3MHz.
Except the carrier line spectra, the rest of OOK spectrum should meet the same transmit mask as other SC devices, in order to minimize the inter-channel interference.
After study, OOK spectrum can meet FCC regulation.
<author>, <company>

6. August 2008
Comment to CID # 79 and # 630
Simulated BW & Height: carrier spectral is within [-3MHz, +3MHz] with 30dBr
Distortion margin: 1.8MHz
Crystal stability +/-25ppm: GHz X (+/-25ppm) = +/-1.62MHz
Phase noise: offset # At RBW=3MHz, offset
Extra margin: 1.2MHz & 10dBr
Proposed definition= Simulated BW & Height + Distortion margin + Extra Margin
(BW = +/-6MHz) & (Height = 40dBr)
30dB
[-6MHz, +6MHz]
40dBr
# Stephane Pinel and etc, “A 90nm CMOS 60GHz Radio”, ISSCC2008, San Francisco, Feb

7. <month year>
doc.: IEEE <doc#>
August 2008
doc: IEEE xxx c
Comment to CID # 79 and # 630
Frequency (MHz)
Relative limit (dBr)
|f-fc| 6 40
6 |f-fc| 940
940 |f-fc| 1100
-1/8*[|f-fc(MHz)|-940]
1100 |f-fc| 1600
-1/100*[|f-fc(MHz)|+900]
1600 |f-fc| 2200
-1/120*[|f-fc(MHz)|+1400]
|f-fc| 2200
-30
On the top of HSI mask, a carrier mask is defined with 40dBr at [-6MHz, 6MHz].
Resolution bandwidth is set to 3MHz.
Slide 7
Page 7
<author>, <company>

8. Comment to CID # 79 and # 630 FCC Regulation Investigation
August 2008
Comment to CID # 79 and # 630
FCC Regulation Investigation
FCC Operation within the band 57-64GHz
Section (e) requires:
If the emission bandwidth is larger than or equal to 100MHz, total peak transmitter output power shall not exceed 500 mW.
If the emission bandwidth is less than 100MHz, the total peak transmitter output power shall not exceed the product of 500 mW times their emission bandwidth divided by 100 MHz.
E.g. emission bandwidth is 50MHz, Limit = 500mW*(50MHz/100MHz) = 250mW
After investigation,
SC-OOK device has emission bandwidth larger than 100MHz and total peak transmitter output power less than 500mW.