1. Reference waveform generator for 11ac
July 2011
doc.: IEEE /0xxxr0
March 15, 2011
Reference waveform generator for 11ac
Date:
Authors:
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Fei Tong, CSR
Fei Tong, CSR

2. Reference waveform generator for 11ac
March 15, 2011
Reference waveform generator for 11ac
CSR
Fei Tong, CSR

3. March 15, 2011
Purpose
Improve standard comprehensibility by providing reference model alongside text specification
The reference model will facilitate an unambiguous interpretation of the standard and interoperability between devices from different vendors
To maintain continuity of the 11n spec presentation (providing a reference model as an annex)
Annex T.1 in IEEE Std n-2009
Fei Tong, CSR

4. March 15, 2011
Scope
Reference model generates baseband waveforms for VHT and other backward compatible modes (including HT and Legacy) specified in ac, both mandatory and optional aspects
Informative (not normative) part of the spec
No MAC elements
Fei Tong, CSR

5. Proposal for the reference model
March 15, 2011
Proposal for the reference model
MATLAB Command-line interface and test-vector
Commonly used language among engineers working in this field
Compatible with the existing 11n reference model
For existing users, easy to migrate from existing 11n model
Stop supporting GUI
It is not essential to facilitate the purpose of specification conformance
Fei Tong, CSR

6. Status of the model Implemented according to IEEE P802.11ac/D0.1
March 15, 2011
Status of the model
Implemented according to IEEE P802.11ac/D0.1
Features Supported
Baseband waveform supporting multiple transmit antennas
20, 40, 80, 160, bandwidth options
All backward compatible modes
Mandatory and optional configuration
Example:
s_bbac = tx_11ac('VHT', ‘VHT160M’, ‘N_ss:1’,‘MCS:1’, ‘LDPC_CODING:0’);
Fei Tong, CSR

7. Proposed course of action
July 2011
doc.: IEEE /0xxxr0
March 15, 2011
Proposed course of action
Get feedback from members at this meeting
Get support through straw polls at this meeting
Get consensus from the task group on the requirements of the reference model as well as the working process
Agree on timeline for comments and feedback of the reference model to make it ready for release along with specification
Fei Tong, CSR
Fei Tong, CSR

8. July 2011
doc.: IEEE /0xxxr0
March 15, 2011
Straw poll 1
Are you in principle in favor of providing a reference transmitter model, as an informative annex to the 11ac standard?
Yes No
Abstain
Fei Tong, CSR
Fei Tong, CSR

9. March 15, 2011
Straw poll 2
Do you agree with the framework of the model we have presented and using it as a basis for the 11ac reference transmitter model?
Yes No
Abstain
Slide 9
Fei Tong, CSR