1 clemson university wimax activities update for the aatg 9/7/2007 j. martin, m. westall school of...
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Clemson University WiMAX Activities Update for the AATG
9/7/2007
J. Martin, M. WestallSchool of Computing Clemson University
jim.martin/westall@cs.clemson.edu
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M/A-COM Equipment Airlink:
IEEE 802.16e function – although just supports Fixed/Nomadic clients
5MHz channels at 4.9GHz OFDM 256 FFT 27dBm output power TDD operation, 10ms frame time, variable US/DS split Supported modulation methods: BPSK (1/2, 3/4), 16
QAM(1/2,3/4), 64QAM(1/2,3/4) Interfaces:
RJ-45 Ethernet 24 V DC Power 4.9 GHz RF and GPS Antenna
Managed by M/A-COM UAS Admin software
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Testbed: Lab Network
Wireless channelBase Station192.168.90.252
130.127.49.x 192.168.90.254Internet GatewayNTD, DHCP
192.168.90.1UAS laptop
Linux host192.168.90.12
Subscriber Station192.168.90.251
Linux host192.168.90.11Linux host
192.168.90.10TCP source/Siink
100/1000Switch 100/1000
Switch
100/1000Switch
Linux host192.168.90.13
192.168.90.x
Subscriber Station192.168.90.251
Linux host192.168.90.1xVoIP/Video source/Siink
ClemsonNetwork130.127/16
Window hostIndigo Video Mgt Software
Linux Host“CommandCenter”
Private net - putlic net NAT translationPublic net - private net reverse NAT map: 130.127.x.x to 192.168.90.x 130.127.x.x to 192.168.90.x
Validation Test 1DS modulation
US modulation
US/DS throughput(single flow)
Rss at the SS
64QAM 2/3(capacity: 15.36Mbps)
64QAM 2/3 UDP:US:4.8MbpsDS:4.8Mbps
16QAM1/2(capacity: 7.68Mbps
16QAM1/2
64QAM2/3 16QAM1/2 TCPUS: 2 MbpsDS: 4.3 Mbps
64QAM3/4 16QAM1/2
64QAM3/4 QPSK1/2
64QAM3/4 BPSK1/2
WiMAXNetwork
Linux host192.168.90.11
Linux host192.168.90.254
Validation Test 2
WiMAXNetwork
Linux host192.168.90.11
Linux host192.168.90.254
•192.168.90.254 sends 210 bytes every 15 ms•Obtain a trace
•1: packets sent by 254•2:packets received by 11•3:packets sent by 11•4:packets received by 254
•Obtain the PDF of interpacket departure and arrival times•Provides a visualization of the dynamics of WiMAX
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Validation test 2
0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
PD
F
Values 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
PD
F
Values
0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
PD
F
Values 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
PD
F
Values
1. At 254 - sender 2. At 11 -receiving
3. At 11 – sending the echo 4. At 254 – receiving the echo
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