IEEE C802.16m-09/1934r1
Project
IEEE 802.16 Broadband Wireless Access Working Group <http://ieee802.org/16>
Title
Proposed Changes to Sequence Mapping of S-FBCH (15.3.9.2.1.2)
Date
Submitted
2009-08-29
Source(s)
Hwasun Yoo, Jaehee Cho, Heewon Kang
Samsung Electronics Co., Ltd.
Re:
P802.16m/D1 / Area : Chapter 15.3.9 UL control channel
Abstract
The contribution proposes the clean up text to be included in IEEE 802.16m/D1.
Purpose
To be discussed and adopted by TGm for the 802.16m Advanced Air Interface (Draft 2)
Notice
Release
Patent
Policy
hwasun.yoo@samsung.com
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1
IEEE C802.16m-09/1934r1
Proposed Changes to Sequence Mapping of S-FBCH
(15.3.9.2.1.2)
Hwasun Yoo, Jaehee Cho, Heewon Kang
Samsung Electronics Co., Ltd.
1. Introduction
The contribution proposes the clean up text on sequence mapping of secondary fast feedback channel.
The proposed text is developed so that it can be readily combined with IEEE P802.16 Rev2/D8 [1], it is
compliant to the 802.16m SRD [2] and the 802.16m SDD [3], and it follows the style and format
guidelines in [4]. Proposed text has been underlined in blue and deleted text has been struck through in
red. Existing text is shown in black.
2. References
[1] IEEE P802.16 Rev2/D8, “Draft IEEE Standard for Local and Metropolitan Area Networks: Air
Interface for Broadband Wireless Access,” Dec. 2008.
[2] IEEE 802.16m-07/002r8, “IEEE 802.16m System Requirements Document”
[3] IEEE 802.16m-08/003r9a, “IEEE 802.16m System Description Document”
[4] IEEE 802.16m-08/043, “Style guide for writing the IEEE 802.16m amendment”
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IEEE C802.16m-09/1934r1
3. Text proposal
---------------------------------------------------
Text Start
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<Modify the text starting from line 40, page 432 of section 15.3.9.1.2 Secondary fast feedback control
channel as shown below :>
15.3.9.2.1.2 Secondary fast feedback control channel
The SFBCH is comprised of 3 distributed FMTs with 2 pilots allocated in each FMT. Pilot sequence
p0 p1 p2  p5 are modulated as is [1 1 1 1 1 1] with pilot boosting.
The SFBCH symbol generation procedure is as follows. First, the SFBCH payload information bits
a0a1a2 al 1 are encoded to M bits b0b1b2 bM 1 using the TBCC encoder described in
<<15.3.12.2.>>
The values of parameters L and M are set to l and 60, respectively. The value of K bufsize should be set
as Equation (XX)
 30 l  7,8,9

K bufsize   5l l  10,11
60 12  l  24

(249)
The coded sequence b0b1b2 bM 1 is then modulated to M/2 symbols c0 c1c2 c M
2
c0 c1c2
cM
2
1
1
using QPSK
using QPSK. The modulated symbols are mapped to the data subcarriers of the SFBCH
FMTs as shown in Figure 481.
The modulated symbols c0 c1c2  c M
2
1
and pilot sequence
p0 p1 p2  p5 are combined to form sequence d 0 d1d 2  d 35 according to Equation (YY) and are
mapped to the data subcarriers of the SFBCH FMTs as shown in Figure 506.
for mod( i ,8)  0
 p i / 8
di    
ci i / 81 for mod( i,8)  0
where
(YY)
if 0  i  18
 i
i  
, 0  i  35
i  5 if 19  i  35
<Replace Figure 481 in page 433 with the following>
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IEEE C802.16m-09/1934r1
time
frequency
p0
c5
c10
c15
c20
c25
c0
c6
c11
p1
c21
c26
c1
p2
c12
c16
c22
c27
c2
c7
c13
c17
p3
c28
c3
c8
p4
c18
c23
c29
c4
c9
c14
c19
c24
p5
Figure 481─SFBCH comprising of three distributed 2x6 UL FMTs.
Figure 481─SFBCH comprising of three distributed 2x UL FMTs.
---------------------------------------------------
Text end
4
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