Post on 12-Aug-2015
WHITE SPACE
ByAduzza bt Abdul Malik (29399)Aimi Syuhaidah bt Mustafa Kamal (29463)Farhanah binti Azmi (30160)Nurul Shafiqah bt Saabi (32506)
OUTLINE
• Introduction
• Infrastructure
• Working Principle (Concept)
• Advantages
• Comparison
• Conclusion
• References
• Refers to the unused TV channels known as buffer channel.
• Used to protect broadcasting interference.• It has been proven those unused spectrum
can be used to provide broadband internet access while operating surrounding TV channels
• Also known as “Super Wi-Fi”
WHITE SPACE What is white space?What is white space?
Figure 1: Usage of TV White Space all over the world [4]
INFRASTRUCTURE
Notify Available Spectrum
How it works?
Figure 2: TV White Space Concept [2]
ADVANTAGES
• i) Greatest Distance
ii) Penetrates Common Obstructions
o
ADVANTAGES
Figure 3: Advantages of TV White Space [2]
iii) Greater Efficiencies
-Deliver more bandwidth
- lower network cost
- lower power consumption
ADVANTAGES
ComparisonWLAN WRAN
Coverage Indoor: up to few 100m
Outdoor: up to few km
Typical: 17 to 33km
Maximum range: up to 100 km
Max Delay Spread, µs Indoor: < 1
Outdoor: 1 to 10
Typical: 11 to 25
Maximum range: 25 to 60
Fast Fourier Transform (FFT) size
64, 128, 256, optional 512 and 1024
2048
Total Bandwidth 5,10,20,40 6, 7, 8
Maximum data rate 12 Mbps 22,69 Mbps
Modulation OFDM OFDM
Table 1: Comparison between WLAN and WRAN [3]
CONCLUSION
• Standard 802.22 has most complete set of cognitive properties
• High speed wireless technology for rural areas.
REFERENCE
[1] Horvitz, R. (2013). TV White Space.
[2] Super Wifi Technology. (2012). Microsoft Research.
[3] IEEE 802.22 Working Group on Wireless Regional Area Networks.
Enabling Rural Broadband Wireless Access Using Cognitive Radio
Technology in TV White Spaces. Recipient of the IEEE SA Emerging
Technology Award
[4] Carlson. (2014). Carlson Wireless Technologies. Retrieved from TV
White Space-Breakthrough Technology: Super Wifi Technology.
(2012). Microsoft Research
Thank You