March 2006doc.: IEEE 802.11-06/0448r2
IEEE P802.11
Wireless LANs
Date: 2006-03-07
Author(s):
Name / Company / Address / Phone / email
Gal Basson / Intel Corporation / P.O.B 1659
Haifa, 31015 Israel / 972-547885404 /
Joonsuk Kim / Broadcom Corporation / 190 Mathilda Place, Sunnyvale, CA 94086 U.S.A. / +1-408-543-3455 /
Christopher Hansen / Broadcom Corporation / 190 Mathilda Place, Sunnyvale, CA 94086 U.S.A. / +1-408-543-3378 /
Text addition to section 7.4.7.8
We have made a new update to section 7.4.7.8 that makes the subcarrier grouping consistent among the different explicit feedback methods.
Update Table n41 as given below.
Table n1 – Compressed Steering Matrices Feedback
Order / Information / Name / Size / Value1 / Category / HT / 1 / TBD
2 / Action / Compressed Steering Matrices Feedback / 1 / 8
3 / CSI Matrices Control / CSI Matrices Control / 2 / See text.
4 / MCMR Segment Sequence / MCMR Segment Sequence / 1 / Unused
5 / Receiver SNR / RX SNR / 1 / Average Signal to Noise Ratio in the STA sending the report.
5 / Explicit Feedback Sequence / Explicit Feedback Sequence / 1 / See text
6 / QuantizedSteering Matrices Feedback Information / QuantizedSteering Matrices Feedback Information / Variable / See text
The following text is to be added to Section 7.4.7.8, after the text “All angles are transmitted LSB to MSB”.
Subcarriers are sent in order according to the following sequence. For 20 MHz bandwidth operation:
For 40 MHz bandwidth operation:
For example, 40 MHz operation with Ng=2 would have subcarriers in the following order:
[-58,-56….-4,-2,2,4…….56,58].
The second example should be corrected as follows:
Example: 4x2, 40MHz, 4 tone grouping, , = 4. Each ij over all tone indices has 120 bits. Each ij over all tone indices has 60 bits.
bits / b1..b4 / b5..b8 / … / b117..b120 / b121..b124 / … / b361..b362 / … / b661..b664 / … / b899..b900data / 11(f-58) / 11(f-54) / … / 11(f58) / 21(f-58) / … / 21(f-58) / … / 32(f-58) / … / 42(f58)
Submissionpage 1C. Hansen, et al