July 2006doc.: IEEE 802.11-06/0xxxr0

IEEE P802.11
Wireless LANs

N_CBPSS, N_BPSCS issues
Date: 2006-07-07
Author(s):
Name / Company / Address / Phone / email
AssafKasher / Intel / POB 1659, Haifa 31015, Israel / 97248651547 /


This submission addresses comments refering to the use of and in the draft. In some places in the draft the fact that these numbers may depend on which spatial stream is used is ignored.

Replace the following text from section 20.3.2.2(Overview of the PPDU encoding process):

k)Divide each of the encoded and parsed spatial streams of bits into groups of bits. Within each spatial stream and group, perform an “interleaving” (reordering) of the bits according to a rule corresponding to. Refer to 20.3.4.4.3(Ed: Frequency interleaver ) for details.

with:

k)Divide each of the encoded and parsed spatial streams of bits into groups of bits, where is the index of the spatial stream. Within each spatial stream and group, perform an “interleaving” (reordering) of the bits according to a rule corresponding to. Refer to 20.3.4.4.3(Ed: Frequency interleaver ) for details.

Replace the following text from section 20.3.2.2(Overview of the PPDU encoding process):

l)For each of the encoded, parsed and frequency interleaved spatial streams, divide the resulting coded and interleaved data string into groups of bits, where is the index of the spatial stream. For each of the bit groups, convert the bit group into a complex number according to the modulation encoding tables. Refer to 17.3.5.7 for details.

with

l)For each of the encoded, parsed and frequency interleaved spatial streams, divide the resulting coded and interleaved data string into groups of bits, where is the index of the spatial stream. For each of the bit groups, convert the bit group into a complex number according to the modulation encoding tables. Refer to 17.3.5.7 for details.

Add the following line to table n63 (Frequetly used parameters):

/ Number of coded bits per single carrier per spatial stream

Replace the following text in section 20.3.4.4.2 (Stream Parser)

The number of bits assigned to a single axis (real or imaginary) in a constellation point in spatial stream iSS is denoted by

(20-36)

with

The number of bits assigned to a single axis (real or imaginary) in a constellation point in spatial stream iSS is denoted by

(20-36)

replace the second line in talbe n74 (Number of rwos and columns in the interleaver)

NROW / 4NBPSC / 6NBPSC

with

NROW / 4NBPSCS(iSS) / 6NBPSCS(iSS)

replace equation 20-41 in section 20.3.4.4.3 (Frequency Interleaver)

(20-41)

with

(20-41)

replace equation 20-42 in section 20.3.4.4.3 (Frequency Interleaver)

(20-42)

with

(20-42)

replace equation 20-43 in section 20.3.4.4.3 (Frequency Interleaver)

(20-43)

with

(20-43)

Submissionpage 1Assaf Kasher, Intel.