During the introduction and expansion of the new generation of mobile broadband networks 4G and LTE/LTE Advanced, some problems have occurred with high speed data transmission. The base stations of these networks presuppose the throughput of up to 100 Mbps for each user, this is much higher than existing 3G technologies. Therefore ultra high capacity in the region 1.25 Gbps and above is necessary to successfully operate these network base stations.
To enable gigabit data rates it is necessary to have broadband transmit-receive frequency separation. It is generally accepted in various countries to allocate high frequency bands for broadband signals. An advantage of the 71-76/81-86 GHz and 92-95 GHz frequency bands is the freedom from interference from other nearby radio links, even those operating in the same bands. Multipath reflections are non-existent at these frequencies, and the narrow beam width of the Cassegrain Antenna allows many radio links to work simultaneously in the same area. Because of these properties, the 71-76 and 81-86 GHz bands make an excellent choice for broadband networks with high speed equipment.
For these reasons many countries offer favourable conditions for the granting of licences to operate at these frequencies. In the USA and Europe the 71-76/81-86 GHz and 92-95 GHz bands have been licensed on the bases of non-exclusive nationwide licenses since 2003 and 2005, respectively.
Recently Russia also received a similar document named "Concept of facilitation of licensing 71-76/81-86 GHz and 92-95 GHz radio bands for operating line of sight wireless links", that was issued by State Radiofrequencies Commission.
In accordance with this Concept, 71-76/81-86 GHz and 92-95 GHz bands can be used in the Russian Federation by any corporate body or individual person.
One condition of the Russian concept is that the equipment for fixed radios may only operate with efficiency of spectrum that is not less than 1 bit per Hertz. It means that the transmitted signal with such types of modulation as OOK, FSK and BPSK do not satisfy to the given requirement.
In Russia these frequency bands have now started to be used in high-speed radios. The largest manufacturer of ultra high speed Radio Links for millimeter wave bands within the market is ELVA-1 Company. This company offers certified radios for broadband wireless data transmission in the 71-76/81-86 GHz and 92-95 GHz millimeter wave frequency bands. Various models of radio links produced by ELVA-1 Ltd. realize full-duplex wireless Ethernet data pipeline provided ultra high capacity of 1.25 Gbps, 350Mbps radios with Adaptive Code and Modulation (ACM) and 100 Mbps series of links. All equipment provides PSK signal modulation form QPSK and above to 256 QAM.
ELVA-1 is one of the first manufacturers in the broadband market to produce a gigabit capacity 70/80 GHz digital radio link that was specifically designed to meet both European ECC and US FCC performance requirements, and offers certified radio links for use in those markets.
Fibre-class data rates make mm-wave radio links an ideal solution for WiFi or mobile network backhaul links, business WAN or IP telephony gateway connections, metropolitan area networks and rapid-deployment emergency communications.
Each series of radios are equipped with an SNMP management control, which allows a network administrator or technician to remotely control the operating parameters of all radios in the network from a central location.
For example, Gigabit Radio fibre-class data performance provides a vast range of services, including Triple Play, which is the transmission of IPTV, video on demand and VoIP services at the same time.
The intensive deployment of the new generation of networks demands ultra high speeds for which this free frequency resource is necessary. For this reason the development of millimeter wave bands is now happening on a global scale.
This change in licensing procedure for 71-76/81-86 GHz and 92-95 GHz radio bands provides a great opportunity for Russian operators to increase the use of this free resource for point-point universal wireless network development. This also expands the interest in millimeter wave digital solutions and allows expansion into the sphere of multimedia services.
About ELVA-1 Millimeter Wave Division
