MMW Radio 70/80GHz E-Band, 2.6 Gbps Ethernet

MMW links offer high performance connections using Millimeter Wave frequencies. MMW is a high frequency microwave technology offering bandwidths of up to 2.6Gbps Full Duplex capacity.

Millimeter Wave technology is ideal for dense urban areas where radio spectrum is congested.

Planning for Millimeter Wave is based on rainfall, giving useful transmission distances of many kilometres.

System Features

  • Capacity up to 2.6 Gbps Full Duplex
  • Operates in semi-licensed 70/80GHz bands
  • ACM: Adaptive Coding and Modulation optional
  • Range from 1.5 up to 20km*
  • “Pencil beams” of 0.5 – 0.8degrees
  • 1×2.5 Gbps or 2x 1 Gbps Ethernet Interfaces
  • Rugged outdoor grade waterproof enclosure
Applications

  • 4G/LTE Backhaul Infrastructure
  • Wireless Internet Service Providers (WISP)
  • Point-to-Point Wireless networking
  • Corporate backbone or Telecom service provider
  • Resilience for FSO or Fibre links
  • Fast Roll-out & Temporary Deployment

2.6 Gbps and 2x Gigabit Ethernet using 71-76/81-86 GHz Millimeter Waves

RKTPL is offering a range of high performance radios using millimeter-wave frequencies. Using high frequency microwave signals at 60GHz and above, large bandwidths of up to 2.6Gbps Full Duplex capacity can be provided. Using established Link Aggregation technology, links up to 40Gbps full duplex can be implemented for ultra high capacities.

MMW-70-80-2.6GE are full-duplex 2.6-Gigabit point-to-point links especially designed according to FCC and ETSI requirements. They provides interconnection between remote LAN segments at ultra high speed and utilizes Gigabit Ethernet protocols, which is the evolving standard for switches and routers available from a variety of telecommunication equipment manufacturers.

Each link provides 2.6 gigabits-per-second full duplex connectivity between fixed end locations. The link features 10/100/1000Base T and optional 10G SFP+ fibre optic connections at each end of the wireless link and operates as a Layer 2 transparent link. The resulting connection can replace a fibre-optic cable or leased line service offering excellent end-to-end connectivity and reliability. The Millimeter-wave Wireless link provides fibre equivalent performance, reliability and security but with no high deployment cost associated with outdoor fibre installations.

Millimeter Wave Point-to-Point radio links have been designed with compact parabolic Cassegrain antennas of 30, 60 and 90cm diameters, with narrow beam widths of typically 0.4 to 0.9 degrees which maximises signal margin across the link and ensures lack of interference from other links or sources.
The 2.6Gbps MMW link operating distances vary from 1.5 to 20 km for varying weather conditions depending of the link frequency and rain intensity. Planning for millimeter wave spectrum use must take into account the propagation characteristics of radio signals at this frequency range. While signals at lower frequency bands can propagate for many miles and penetrate more easily through buildings, millimeter wave signals can travel only a few miles or less. However, these characteristics of millimeter wave propagation are not necessarily disadvantageous. Millimeter waves can permit more densely packed communications links, thus providing very efficient spectrum utilization, and they can increase security of communication transmissions

Operating distance limit for Millimeter-wave communication

The spectrum between 30 GHz and 300 GHz is referred to as the millimeter wave band because the wavelengths for these frequencies are about one to ten millimeters. Millimeter wave propagation has its own peculiarities. This bulletin reviews the characteristics of millimeter wave propagation, including free space propagation and the effects of various physical factors on propagation. It was created to provide an easy to understand reference explaining the characteristics of radio signal propagation at millimeter wave frequencies and their implications for spectrum management. The millimeter wave spectrum at 30-300 GHz is of increasing interest to service providers and systems designers because of the wide bandwidths available for carrying communications at this frequency range. Such wide bandwidths are valuable in
supporting applications such as high speed data transmission and video distribution. Planning for millimeter wave spectrum use must take into account the propagation characteristics of radio signals at this frequency range. While signals at lower frequency bands can propagate for many miles and penetrate more easily through buildings, millimeter wave signals can travel only a few miles or less.

However, these characteristics of millimeter wave propagation are not necessarily disadvantageous. Millimeter waves can permit more densely packed communications links, thus providing very efficient spectrum utilization, and they can increase security of communication transmissions.
The following graph show the major distance advantage of the “E-band” over the 60GHz in terms of the Oxygen absorption peak. E-band links offer longer distances and higher availability than 60GHz links for this reason. Conversely, 60GHz can be used for shorter links sub-1km where dense re-use of the spectrum is intended.

Product Features and Benefits

MMW products are highly robust and ruggedized for operation in harsh climates.The highly integrated Full-Outdoor radio units are shipped with a choice of 30cm or 60cm antennas to meet customer requirements for distance and capacity.

For 10Gbps capacity the radio is comprised single integrated 10Gbps radios which combine both radios onto a single antenna. This increases resilience and flexibility in overall network design and implementation.

Inside the radio unit there are connectors for user network interface and power. The default network interface is optical SFP+ 10Gbps Multimode or Singlemode fibre interface with LC fibre optic connectors of 10Gbps. Various choices of SFP+ area available to match customer network equipment and fibre installations.

The MMW radios include advanced microwave modem technology featuring ACM (Adaptive Coding and Modulation) which allows the link to optimise uptime and capacity especially in high “fade” conditions such as rainfall. This enables service providers to offer higher availability Service Level Agreements (SLAs) and longer link lengths and higher availability. ACM acts by lowering the modulation rate during high “fade” conditions which results in lower throughput but retaining a live link. When the fade event is over, the modulation is automatically returned to the full capacity. These features can be programmed in the sophisticated Network Management console. The links are supplied with mounting brackets to mount the units on poles which are typically installed on walls, towers or roof top locations to ensure clear Line of Sight (LOS) between the end points of the wireless link..Alignment of the links is achieved using simple Digital Voltmeter connection to the radio unit as common with most microwave links and takes a skilled installer team typically 5-20 minutes.
When installed the links provide “fit and forget” connectivity between the nodes on the network and can be remotely managed and monitored using a choice of Web-based NMS and SNMP Management platforms.

Specifications

System Variant           MMW-70/80-2.6 AD
System Parameters
Frequency Band         E band
Bandwidth                   71-76 GHz & 81-86GHz.
Capacity                       Up 2.6 Gbps Full duplex
Channel Bandwidth    250 / 500 MHz
Modulation Type      QPSK, 16QAM, 32QAM, 64QAM, 128QAM, 256QAM with Hitless ACM
Rx Sensitivity              -70 to 53 dBm (@ BER 1E-6) depends on modulation (note: must allow for DPA losses)
Output Power             +10 to +20dBm
Forward Error            RS(255, 239) Included, and ACM (Adaptive Coding and Modulation, non-ASK versions only)
Correction (FEC)
Network                      Web based NMS, SNMP Features
Management

Networking Features   : IEEE1588v2 Precision Time Protocol (PTP), Synchronous Ethernet (SyncE). Jumbo Frames up to 9600 Bytes. VLAN transparent pass-through including single or double-tagged packets
Data and Aux Interface

Ethernet Interface      10/100/1000BaseT RJ45, plus Optional SFP+ for 1000Base-LX/SX and 10Gbps SFP+ for 10GBase-LX/SX                                                (singlemode & multimode fiber)Antenna
Antenna Type              Cassegrain type antenna with radome
Antenna Gain/            30cm: 45dBi, 0.9° beamwidth
beamwidth 60 cm      60cm: 51dBi, 0.5° beamwidth
90cm: optional available.

Power /Environment

Power Supply                  AC Input 88-264 Volts, 50/60 Hz
Power Consumption      30W typically

DC Power                         40.5 to 56 Volts DC
External mains                AC supply option available
Power Connector            Power-over-Ethernet RJ45
Ethernet

Operational                      -45°C to +70°C
Temperature

Humidity                          0 to 95%, non-condensing

Physical Dimensions

Outdoor unit size             230 x 230 x 90 mm without antenna,
620 x 620 x 490 with 60cm,
340 x 340 x 340 with 30cm
Weight 1x Radio only:    3.3kg
30cm antenna:                 3.6 kg
60cm antenna:                 6.7kg
Pole mount kit:                3.2kg

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