WHITE SPACE By Aduzza bt Abdul Malik (29399) Aimi Syuhaidah bt Mustafa Kamal (29463) Farhanah binti Azmi (30160) Nurul Shafiqah bt Saabi (32506)
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