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Abstract---Wireless technology improvement has become used in today’s modern life. One of the greatest developments made on wireless technology field was discovering a new Wireless Technology (Gi-Fi). Gigabit Wireless is the world’s first transceiver combined on a single chip that operates at 60GHz on the CMOS process.
Gi-Fi is a wireless transmission system which is 10 times faster than Wi-Fi and it’s chip delivers short-range multi-gigabit data transfer in an indoor environment. It will make wireless transfer of audio and video data up to 5 gigabits per second, low power consumption, usually within a range of 10 meters . Technology provides low-cost, high broadband access, with very high speed large files exchange within seconds. It is essential that Gi-Fi to be the preferred next generation wireless technology used in home and offices.
1. INTRODUCTION
For many years cables governed the world. After that optical fiber played a dominant role because of its higher bit rates and faster transmission but its installation caused a great difficulty thus we led to wireless access . First of all Bluetooth has been used as wireless access which can cover 9-10 meter. Next Wi-Fi, having coverage area of 91meters, has brought a revolutionary
solution to the problems appeared in last technology. These days there are no recent development in Wireless technologies [4].
To transfer data and video information at the faster rate, we come up with a new technology namelyGi-Fi. Gi-Fi provides some advantages over wireless technologies such as fast information rate in Gbps, less power consumption and low cost for short range communication.
2. NETWORK EVOLUTION
Communication technology can be divided into two types.1) wired technology and 2) wireless technology. The evolution of wireless
technology will leads to the GI-FI technology. The following diagram will gives the network evolution
Wi-Fi
Wi-Fi is based on the IEEE 802.11 wireless local area network (WLAN) specification. Actually it was designed to be used indoors at close range for example home user and office environment. The main goal of Wi-Fi technology is to provide service for mobile computing device like laptop.
F. Wi-Max
IEEE standard 802.16, also known as Wi-MAX, is a technology for last-mile wireless broadband as an alternative to cable and DSL and where the cost is
G. Gi-Fi
Gi-Fi technology provides many features such as ease of deployment, small form factor, enabling the future of information
management, high speed of data transfer, low power consumption etc. With growing consumer adoption of High-Definition (HD)
television, low cost chip and other interesting features and benefits of this new technology it can be predicted that the anticipated
worldwide market for this technology is vast.
3. What is Gi-Fi?
Gi-Fi (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. It satisfies the standards of IEEE 802.15.
3.1 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.
3.2 Fundamental Technologies in 802.15.3C:
This millimeter-Wave WPAN will operate in the new and clear band including 57-64 GHz unlicensed band defined by FCC 47 CFR 15.255. The millimeter-wave WPAN will allow high coexistence (close physical spacing) with all other microwave systems in the 802.15 family of WPANs.
3.3 Working in Gi-Fi:
Here we will be use a time division duplex for both transmission and receiving. The data files are up converted from IF range to RF 60Ghz range by using 2 mixers. We will feed this to a power amplifier, which feeds millimeter-wave antenna.
The incoming RF signal is first down converted to an IF signal centered at 5 GHz .and then to normal data ranges, here we will use heterodyne construction for this process
to avoid leakages due to direct conversion. Due to availability of 7 GHz spectrum the total data will be transferred within seconds.
3.3.1 Time-division duplex
Time-Division Duplex (TDD) is the application of time-division multiplexing to separate outward and return signals. It emulates full duplex communication over a half duplex communication link. Time division duplex has a strong advantage in the case where the asymmetry of the uplink and downlink data speed is variable. As uplink traffic increases, more channel capacity can dynamically be allocated to that, and as it shrinks it can be taken away. For radio systems that aren't moving quickly, another advantage is that the uplink and downlink radio.
3.4 Why 60 GHz..?
Here we will use millimeter wave antenna which will operate at 60 GHz frequency which is unlined band .Because of this band we are achieving high data rates energy propagation In the 60 GHz band has unique characteristics that make possible many other benefits such as excellent immunity to co-channel interference, high security, and frequency re-use.
Point-to-point wireless systems operating at 60 GHz have been used for many years for satellite-to-satellite communications. This is because of high oxygen absorption at 60 GHz (10-15 dB/Km). This absorption attenuates 60 GHz signals over distance, so that signals cannot travel far beyond their intended recipient. For this reason, 60GHz is an excellent choice for covert communications.
3.5 ULTRA WIDE BAND FREQUENCY USAGE:
UWB, is 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.
4. features of Gi-Fi
The Gi-Fi standard has been developed with many objectives in mind. These are summarized below:
4.1 Advantages
i. Time-Division Duplex
Time-Division Duplex (TDD) is the application of time-division multiplexing to separate outward and return signals. It emulates full duplex communication over a half-duplex communication link. Time division duplex has a strong advantage in
Point-to-point wireless systems operating at 60 GHz have been used for many years for satellite-to-satellite communications. This is because of high oxygen absorption at 60 GHz (10-15 dB/Km). This absorption attenuates 60 GHz signals over distance, so that signals cannot travel far beyond their intended recipient. For this reason, 60GHz is an excellent choice for covert communications.
3.5 ULTRA WIDE BAND FREQUENCY USAGE:
UWB, is 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
the case where the asymmetry of the uplink and downlink data speed is variable. As uplink traffic increases, more channel capacity can dynamically be allocated to that, and as it shrinks it can be taken away. Another advantage is that the uplink and downlink radio.
ii. Low Power Consumption
As the large amount of information transfer it utilizes mili-watts of power only. It consumes only 2mwatt power for data transfer of gigabits of information, where as in present technologies it takes 10mwatt power, which is very high.
iii. High Security
As the IEEE 802.15.3C provides more security, it provides link level and service level security, where these features are optional.
Point-to-point wireless systems operating at 60 GHz have been used for many years by the intelligence community for high security communications and by the military for satellite-to satellite communications. The combined effects of O2 absorption and narrow beam spread result in high security and low interference.
iv. 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.
CONCLUSION
In this research paper Gi-Fi technology is defined that will allow wireless transfer of audio and video data up to 5 gigabits per second, 10 times the current maximum wireless transfer rate, at one-tenth of the cost, usually within a range of ten meters that operates at 60GHz on the CMOS process. This technology removes cables that for many years curled the world and delivers high speed data transfer rate. The comparison that is performed between Gi-Fi and existing wireless technologies in this research paper shows that these features along with some other benefits such as Low-cost chip, Low Power Consumption ,No Frequency Interference, and High Security that are explained in detail in this research paper, it is suitable to replace the existing wireless technologies for data transmission between devices that are placed in the short distances from each other.
ItexpectGi-Fi to be the dominant technology for wireless networking. Thatwillprovide low-cost, high broadband access, with very high speed large files swapped in seconds. Two important characteristics of CMOS devices that is used in this technology is are high noise immunity and low static power consumptions. Gi-Fi allows a full-length movie to be transferred between two devices in seconds. To the higher megapixel count on cameras, the increased bit rate of music files, the higher resolution of our video files