06-10-2012, 10:57 AM
4G Wireless Technology
4G Wireless.docx (Size: 543.18 KB / Downloads: 33)
What is 4G?
When talking about 4G, the question that comes to our mind is what 4G Technology is. 4G is short for Fourth (4th) Generation Technology. 4G Technology is basically the extension in the 3G technology with more bandwidth and services offered in the 3G. But at this time nobody exactly knows the true 4G definition. The expectation for the 4G technology is basically the high quality audio/video streaming over end to end Internet Protocol (IP).
4G will provide a comprehensive IP solution where voice, data and multimedia can be given to user on an “anytime, anywhere” basis.
4G Technology offers high data rates that will generate new trends for the market and prospects for established as well as for new telecommunication businesses. 4G networks, when tied together with mobile phones with in-built higher resolution digital cameras and also High Definition capabilities will facilitate video blogs.
4G is often described as MAGIC: mobile multimedia, anytime anywhere, global mobility support, integrated wireless solution, and customized personal service.
Orthogonal frequency-division multiplexing (OFDM):
is a method of encoding digital data on multiple carrier frequencies. Conceptually, OFDM is a specialized FDM, the additional constraint being: all the carrier signals are orthogonal to each other meaning that cross talk between the sub-channels is eliminated and inter-carrier guard bands are not required. This greatly simplifies the design of both the transmitter and the receiver; unlike conventional FDM, a separate filter for each sub-channel is not required. It can easily adapt to severe channel conditions without complex time-domain equalization. OFDM works by splitting the radio signal into multiple smaller sub-signals that are then transmitted simultaneously at different frequencies to the receiver.
A few of the advantages of using OFDM are:
• Robust against narrow-band co-channel interference.
• High spectral efficiency as compared to conventional modulation schemes, spread spectrum, etc.
• Efficient implementation using Fast Fourier Transform (FFT).
• Low sensitivity to time synchronization errors.
• Tuned sub-channel receiver filters are not required (unlike conventional FDM).
Internet Protocol version 6(IPv6):
The Internet Protocol (IP) is the method or protocol which data is sent from one computer to another on the internet. Each computer (known as a host) on the Internet has at least one IP that uniquely identifies it from all other computers on the Internet.
IPv6 is a version of the Internet Protocol (IP) intended to succeed IPv4, which is the protocol currently used to direct almost all Internet traffic
It includes 128 bits, which is 4 times more than 32 bits IP address in IPv4.
Software Defined Ratio(SDR):
SDR is one form of open wireless architecture (OWA). Since 4G is a collection of wireless standards, the final form of a 4G device will constitute various standards. This can be efficiently realized using SDR technology, which is categorized to the area of the radio convergence.
• A software defined radio is one that can be configured to any radio or frequency standard through the use of software.
• Roaming can be an issue with different standards, but with a software defined radio, users can just download the interface upon entering new territory, or the software could just download automatically.
Conclusion
4G has a strong history and expertise in developing applications and solutions which meet the local Indian requirements.
4G has built these applications and solutions around modular software
platform providing an Identity management solution that interoperates
with multiple biometric devices, biometric algorithms, and demographic
search engines, to offer low cost, interoperable, secure, and scalable
solutions.
For mobile users it will provide an `always on` mobile broadband connection so that voice calls, media streaming and internet access will be constantly at hand. Additionally the download speeds capable over 4G networking should be far greater than is currently available on 3G or indeed any home broadband service provided by a landline, with test 4G networks in China delivering 100 Mbps download speeds. This is literally an incredible development and a huge leap in terms of download speed and will no doubt further revolutionize the way in which we have access to the internet, as well as drastically lowering the cost of voice calls which use relatively little bandwidth.
4G Wireless.docx (Size: 543.18 KB / Downloads: 33)
What is 4G?
When talking about 4G, the question that comes to our mind is what 4G Technology is. 4G is short for Fourth (4th) Generation Technology. 4G Technology is basically the extension in the 3G technology with more bandwidth and services offered in the 3G. But at this time nobody exactly knows the true 4G definition. The expectation for the 4G technology is basically the high quality audio/video streaming over end to end Internet Protocol (IP).
4G will provide a comprehensive IP solution where voice, data and multimedia can be given to user on an “anytime, anywhere” basis.
4G Technology offers high data rates that will generate new trends for the market and prospects for established as well as for new telecommunication businesses. 4G networks, when tied together with mobile phones with in-built higher resolution digital cameras and also High Definition capabilities will facilitate video blogs.
4G is often described as MAGIC: mobile multimedia, anytime anywhere, global mobility support, integrated wireless solution, and customized personal service.
Orthogonal frequency-division multiplexing (OFDM):
is a method of encoding digital data on multiple carrier frequencies. Conceptually, OFDM is a specialized FDM, the additional constraint being: all the carrier signals are orthogonal to each other meaning that cross talk between the sub-channels is eliminated and inter-carrier guard bands are not required. This greatly simplifies the design of both the transmitter and the receiver; unlike conventional FDM, a separate filter for each sub-channel is not required. It can easily adapt to severe channel conditions without complex time-domain equalization. OFDM works by splitting the radio signal into multiple smaller sub-signals that are then transmitted simultaneously at different frequencies to the receiver.
A few of the advantages of using OFDM are:
• Robust against narrow-band co-channel interference.
• High spectral efficiency as compared to conventional modulation schemes, spread spectrum, etc.
• Efficient implementation using Fast Fourier Transform (FFT).
• Low sensitivity to time synchronization errors.
• Tuned sub-channel receiver filters are not required (unlike conventional FDM).
Internet Protocol version 6(IPv6):
The Internet Protocol (IP) is the method or protocol which data is sent from one computer to another on the internet. Each computer (known as a host) on the Internet has at least one IP that uniquely identifies it from all other computers on the Internet.
IPv6 is a version of the Internet Protocol (IP) intended to succeed IPv4, which is the protocol currently used to direct almost all Internet traffic
It includes 128 bits, which is 4 times more than 32 bits IP address in IPv4.
Software Defined Ratio(SDR):
SDR is one form of open wireless architecture (OWA). Since 4G is a collection of wireless standards, the final form of a 4G device will constitute various standards. This can be efficiently realized using SDR technology, which is categorized to the area of the radio convergence.
• A software defined radio is one that can be configured to any radio or frequency standard through the use of software.
• Roaming can be an issue with different standards, but with a software defined radio, users can just download the interface upon entering new territory, or the software could just download automatically.
Conclusion
4G has a strong history and expertise in developing applications and solutions which meet the local Indian requirements.
4G has built these applications and solutions around modular software
platform providing an Identity management solution that interoperates
with multiple biometric devices, biometric algorithms, and demographic
search engines, to offer low cost, interoperable, secure, and scalable
solutions.
For mobile users it will provide an `always on` mobile broadband connection so that voice calls, media streaming and internet access will be constantly at hand. Additionally the download speeds capable over 4G networking should be far greater than is currently available on 3G or indeed any home broadband service provided by a landline, with test 4G networks in China delivering 100 Mbps download speeds. This is literally an incredible development and a huge leap in terms of download speed and will no doubt further revolutionize the way in which we have access to the internet, as well as drastically lowering the cost of voice calls which use relatively little bandwidth.