MFSK PA-Preamble
IEEE 802.16 Presentation Submission Template (Rev. 9)
Document Number:
IEEE S802.16m-09/1134
Date Submitted:
2009-4-27
Source:
Zheng Yan-Xiu, Yu-Chuan Fang, Chang-Lan Tsai, Chung-Lien Ho, Hsi-Min Hsiao
E-mail: zhengyanxiu@itri.org.tw
.
ITRI
Venue:
Re: IEEE 802.16m-09/0020, Call for contributions on 16m AWD content.
Category: AWD-DG Comments / Area: Others (SCH DG)
“Comments on AWD 15.3.6.1 Advanced Preamble”
Base Contribution:
IEEE S802.16m-09/1134
Purpose:
To be discussed and approval by IEEE 802.16m TG
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MFSK
• Single frequency network
– All Preambles are interlaced on frequency domain
– ABSs not included in NDR-ADV do not interfere
Macro ABS
– CSG femto BSs do not create interference to Macro
ABS
• Detecting both macro BS and femto BS at the same time is feasible due to frequency domain interlaced signal
• Low complexity: only 12 subcarriers correlation detection can be applied
• More sequences: 17 sequences
• CSG femto BS does not cause huge SApreamble detection
CDM
• Not single frequency network due to the
ABSs not included in NDR-ADV
– Hotzone, OSG femto BS and CSG femto BS create interference to macro cell
• Detecting both macro BS and femto BS at the same time is not feasible due to 10dB power difference
• High complexity: at least 216 subcarriers differential detection is necessary
• Less sequences: 11 sequences
• CSG femto BS shall causes huge PA-
Preamble detection

7
8
9
4
5
6
Index
0
1
2
3
10
11
12
13
14
15
16
Carrier
Fully configured
Partially configured
CSG femto BS reserved reserved reserved reserved reserved
ABS type
ABS included in
NBR_ADV
ABS not included in NBR_ADV
N/A
N/A
N/A
N/A
N/A
N/A
N/A
BW
5 MHz
10 MHz
20 MHz reserved reserved
5 MHz
10 MHz
20 MHz reserved reserved
N/A
N/A
N/A
N/A
N/A
N/A
N/A

• Detection performance for
A-Preamble is evaluated
• Detection performance of
PA-Preamble
• Two proposals
– ITRI PA-Preamble with
Intel/Samsung SA-Preamble
– Intel PA-Preamble with
Intel/Samsung SA-Preamlbe
• Two scenarios:
– No interference
– 2dB SIR
Channel Bandwidth
Center frequency
Frequency offset
Over-sampling Factor
FFT Size
Cyclic prefix (CP) ratio
Channel condition
The number of antennas
Modulation
Receiver
PA-Boosting level [dB]
Comp\FFT 512
Samsung
ITRI
7.58
19.19
SA-Boosting level [dB]
Comp\FFT 512
Samsung 7.11
5MHz
2.5GHz
10ppm
28/25
512
1/8
PB3, VA60, VA120
Tx:2, Rx:1
BPSK, QPSK,MPSK
Differential Detection for
Intel/Samsung, ZTE
Cluster-based correlator and energy detection for ITRI

• Both design provides similar performance

– Detect multiple BS types at the same time
– Less detection complexity
– CSG femto BS can be distinguished in case of introducing redundant SA-Preamble detection
– More PA-Preamble sequences