21-01-2013, 09:44 AM
Gigabit Wireless
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INTRODUCTION
Gi-Fi stands for Gigabit Wireless. Gi-Fi is a wireless technology which promises high speed short range data transfers with speeds of up to 5 Gbps within a radius of 10 meters. The Gi-Fi operates on the 60GHz frequency band. This frequency band is currently mostly unused. The Gi-Fi measures 5mm square and it is manufactured using existing complementary metal-oxide-semiconductor (CMOS) technology. The same Gi-Fi system is currently used to print silicon chips. This new wireless technology is named Gi-Fi . The Gi-Fi Chip developed by the Australian researchers. In theory this technology would transfers GB’s of our fav high definition movies in seconds. So Gi-Fi can be considered as a challenger to Bluetooth rather than Wi-Fi and could find applications ranging from new mobile phones to consumer electronics. Gi-Fi allows a full-length high definition movie to be transferred between two devices in seconds. to the higher megapixel count on our cameras, the increased bit rate on our music files, the higher resolution of our video files, and so on.
History Of Gi-Fi
Melbourne University researchers have achieved up to 5Gbps data transfer rates on a wireless chip. This is a lot faster than any current Wi-Fi speeds. Dubbed Gi-Fi, for obvious reasons, it can deliver the connection speed up to ten meters. To fully comprehend how fast Gi-Fi is, one of the researchers said that a full-length high-def movie can be transferred from one device to another in a matter of seconds. The Gi-Fi chips is only 5mm in size and use current CMOS technology. Cost is only $10. I say, let’s begin mass producing it. Professor. Stan Skafidis of “ Melbourne University , Australia “ is the inventor of Gi-Fi chip.
The Gi-Fi chip uses only a tiny one-millimeter-wide antenna and less than two watts of power, and the Gi-Fi chip would cost less than $10 to manufacture it . According to the website of Melbourne University , Australia “by using Gi-Fi an entire high-definition movie from a video shop kiosk could be transmitted to a mobile phone in a few seconds, and the phone could then upload the movie to a home computer or screen at the same speed,” this statement about the Gi-Fi was given by Nick Miller. Gi-Fi uses the 60GHz “millimeter wave” spectrum to transmit the data from one part to the another part. It provides an advantage over Wi-Fi (wireless internet),”. Wi-Fi’s part of the spectrum is increasingly crowded, sharing the waves with devices such as cordless phones, which leads to interference and slower speeds. “But the millimeter wave spectrum (30 to 300 GHz) is almost unoccupied, and the new chip is potentially hundreds of times faster than the average home Wi-Fi unit” .The best part about this new technology Gi-Fi is its cost effectiveness and power consumption, it only consumes 2 watts of power for its operation with antenna(1mm) included and the development of Gi-Fi chip costs approximately $10( Rs 380) to manufacture.
Wi-Fi
Wi-Fi technology builds on IEEE 802.11 standards.Wi-Fi allows the deployment of local area networks(LANs)without wires for client devices,typically reducing the costs of network deployment and expansions.Spaces where cables cannot be run,such as outdoor areas and historical buildings ,can host wireless LANs.As of 2010 manufactures are building wireless network adapters into most laptops.The price of chipsets for Wi-Fi continues to drop,making it economical networking option included in even more devices.Wi-Fi has become widespread in corporate infrastructures.Different competitive brands of access points and client network-interfaces can inter-operate at a basic level of service.Products designated as “Wi-Fi Certified” by the Wi-Fi Alliance are backwards compatible. “Wi-Fi” designates a globally operative set of standards : unlike mobile phones,any standard Wi-Fi device will work anywhere in the world.Its applications are listed below.
Disadvantages of Wi-Fi and Bluetooth
From the above table we can conclude that the bit rates of Bluetooth is 800Kbps and Wi-Fi has 11Mbps.Both are having power consumptions 5mw and 10mw and lower frequency of operation 2.4GHz.For transferring large amount of videos ,audios, data files take hours of time. So to have higher data transfer rate at lower power consumption we move onto Gi-Fi technology.
WHAT IS Gi-Fi ?
Gi-Fi or gigabit wireless is the world’s first transceiver integrated on a single chip that operates at 60GHz on the CMOS process. It will allow wireless transfer of audio and video data at up to 5 gigabits per second, ten times the current maximum wireless transfer rate, at one-tenth the cost. NICTA researchers have chosen to develop this technology in the 57-64GHz unlicensed frequency band as the millimeter-wave range of the spectrum makes possible high component on-chip integration as well as allowing for the integration of very small high gain arrays. The available 7GHz of spectrum results in very high data rates, up to 5 gigabits per second to users within an indoor environment, usually within a range of 10 meters.The Gi-Fi integrated wireless transceiver chip developed at the National ICT Research Centre,Australia.
It satisfies the standards IEEE 802.15.3C.A new silicon chip developed in Melbourne is predicted to revolutionize the way household gadgets like televisions, phones and DVD players talk to each other. The tiny five-millimeter-a-side chip can transmit data through a wireless connection at a breakthrough five gigabits per second over distances of up to 10 meters. An entire high-definition movie from a video shop kiosk could be transmitted to a mobile phone in a few seconds, and the phone could then upload the movie to a home computer or screen at the same speed.Short-range wireless technology is a hotly contested area, with research teams around the world racing to be the first to launch such a product.
Professor Skafiadas said his team is the first to demonstrate a working transceiver-on-a-chip that uses CMOS (complementary metal-oxide-semiconductor) technology - the cheap, ubiquitous technique that prints silicon chips.This means his team is head and shoulders in front of the competition in terms of price and power demand. His chip uses only a tiny one-millimeter-wide antenna and less than two watts of power, and would cost less than $10 to manufacture.
Architecture of Gi-Fi
The core components of a Gi-Fi system is the subscriber station which available to several access points. It supports standard of IEEE 802.15.3C supports millimeter-wave wireless pan network used for communication among computer devices (including telephones and personal digital assistants) close to one person. An 802.15.3C based system often uses small antenna at the subscriber station. The antenna is mounted on the roof. It supports line of sight operation.
ULTRA WIDE BAND FREQUENCY USAGE
UWB, a technology with high bit rate, high security and faster data transmission. It is a zero carrier technique with low coverage area. So we have low power consumption. These features are Ultra-Wideband (UWB) is a technology for transmitting information spread over a large bandwidth (>500 MHz) that should, be able to share spectrum with other users. Regulatory settings of FCC are intended to provide an efficient use of scarce radio bandwidth while enabling both high data rate personal-area network (PAN) wireless connectivity and longer-range, low data rate applications as well as radar and imaging systems.
Cost-effective
Gi-Fi is based on an open, international standard. Mass adoption of the standard, and the use of low-cost, mass-produced chipsets, will drive costs down dramatically, and the resultant integrated wireless transceiver chip which transfers data at high speed low power at low price $10 only, which is very less as compare to present systems .As go on development the price will be decreased.
Video Information Transfer
By using present technologies video swapping takes hours of time, whereas by this we can transfer at a speed of Gbps. Data transfer rate is same for transfer of information from a PC to a cell or a cell to a PC. It can enable wireless monitors, the efficient transfer of data from digital camcorders, wireless printing of digital pictures from a camera without the need for an intervening personal computer and the transfer of files among cell phone handsets and other handheld devices like personal digital audio and video players.