Student, B.E. 3 /4 ECE, INDU.
Student, B.E. 2/4 ECE, INDU
For many years, cables ruled the world. Optical fibers played a dominant role because of its higher bit rates and faster transmission. But the installation of cables caused a greater difficulty and thus led to wireless access. The foremost of this is Bluetooth, which can cover 9-10metres. Wi-Fi followed it having coverage area of 91metres. No doubt, introduction of Wi-Fi (Wireless Fidelity) has brought a revolutionary solution to “last mile” problem. However, the standard's original limitations for data exchange rate and range, number of channels, high cost of the infrastructure have not yet made it possible for Wi-Fi to become a total threat to cellular networks on one hand, and hard-wire networks, on the other. But the man’s continuous quest for even better technology despite the substantial advantages of present technologies led to the introduction of new, more up-to-date standards for data exchange rate i.e., Gi-Fi .It will help to push wireless communications to faster drive. 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 up to 5 Gigabits per second, ten times the current maximum wireless transfer rate at one-tenth of the cost, usually within a range of 10 meters. It utilizes a 5mm square chip and a 1mm wide antenna burning less than 2 mw of power to transmit data wirelessly over short distances, much like Bluetooth. The development will enable the truly wireless office and home in the future. As the integrated transceiver is extremely small, it can be embedded into devices. The breakthrough will mean the networking of office and home equipment without wires will finally become a reality. In this paper we present a low cost, low power and high broadband chip, which will be vital in enabling the digital economy of the future. INTRODUCTION:
Wi-Fi (IEEE-802.11b) and Wi-Max (IEEE-802.16e) have captured our attention. As there are no recent developments which Transfer data at faster rate, video information transfer is taking a lot of time. This leads to introduction of Gi-Fi technology. It offers some advantages over Wi-Fi, a similar wireless technology, which offers faster information rate (Gb/s), Less power consumption and low cost for short range transmissions. Gi-Fi is developed on an integrated wireless transceiver chip, in which a small antenna is used and both transmitter- receiver integrated on a single chip, are fabricated using the complementary metal oxide semiconductor (CMOS) process.
The reason for pushing into Gi-Fi technology is because of slow rate high power consumption, low range of frequency operations of earlier technologies i.e., Bluetooth and Wi-Fi. See the comparisons and features of those two technologies. BLUETOOTH Vs WI-FI:
DISADVANTAGES OF BLUETOOTH AND Wi-Fi:
From above table, we can conclude that the bit rate of Bluetooth is 800Kbps and Wi-Fi has 11Mbps. Both are having very high power consumption .As for GI-FI, it is less than 2 mw to transfer gigabytes of information. Bluetooth and Wi-Fi operate at a lower frequency of 2.4GHz where as GI-FI operates at 60 GHz. 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...
References: 1. NICTA Documents (www.nicta.com.au)
2. IEEE Chapters.
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