TAILIEUCHUNG - E-Band Wireless

The 71-76 and 81-86 GHz bands (widely known as “e-band”) are permitted worldwide for ultra high capacity point-to-point communications. E-band wireless systems offer full-duplex Gigabit Ethernet connectivity at data rates of 1 Gbps and higher in cost effective radio architectures, with carrier class availability at distances of a mile ( km) and beyond. | E-Band Wireless Technology The 71-76 and 81-86 GHz bands widely known as e-band are permitted worldwide for ultra high capacity point-to-point communications. E-band wireless systems offer full-duplex Gigabit Ethernet connectivity at data rates of 1 Gbps and higher in cost effective radio architectures with carrier class availability at distances of a mile km and beyond. The significance of the e-band frequencies cannot be overstated. The 10 GHz of spectrum available represents by far the most ever allocated by the FCC at any one time representing 50-times the bandwidth of the entire cellular spectrum. With 5 GHz of bandwidth available per channel gigabit and greater data rates can easily be accommodated with reasonably simple radio architectures. With propagation characteristics comparable to those at the widely used microwave bands and well characterized weather characteristics allowing rain fade to be understood link distances of several miles km can confidently be realized. This paper explores the technology behind e-band wireless and demonstrates how it enables the fastest commercial radios available today. A Brief History of E-Band The 71-76 GHz and 81-86 GHz e-band allocations for fixed services were established by the International Telecommunication Union ITU almost 30 years ago at the 1979 WARC-79 World Radiocommunication Conference. However not much commercial interest was shown in the bands until the late 90 s when the FCC s Office of Engineering and Technology published a study on the use of the millimeter-wave bands1. This report concluded that System designers can take advantage of the propagation properties manifested at millimeter wave frequencies to develop radio service applications. The windows in the spectrum are particularly applicable for systems requiring all weather operation . or for short range point-to-point systems. At the 2000 WRC-00 World Radiocommunication Conference ITU delegates discussed enabling High Density Fixed Services at

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