OFCOM Channel Plans for E-band 70GHz-80GHz

OFCOM Channel Plans for E-band 70GHz-80GHz

Here is a chart showing channel plans for the UK

OFCOM - E-Band
OFCOM – E-Band

Uses & Applications

70GHz to 80GHz bands (E-band) are used for Point to Point (P2P) Microwave (Millimeter Wave, MMW) Radio Links

Sources of Data and Graphics

All contents (C) OFCOM and taken from:

OfW48 UK Frequency Allocations for Fixed (Point-to-Point) Wireless Services and Scanning Telemetry This document shows the current bands managed by Ofcom that are available for fixed terrestrial (point to point) links and scanning telemetry in the UK.

Technical regulations

The Radio Equipment and Telecommunications Terminal Equipment Directive
99/5/EC (R&TTED) has been implemented in ‘The Radio Equipment and Telecommunications Terminal Equipment Regulations 2000, Statutory
Instrument (SI) 730. In accordance with Articles 4.1 and 7.2 of the R&TTED
the:
• IR2000: The UK Interface Requirement 2000 contains the requirements for the licensing and use of fixed (point-to-point) wireless services in the UK.
• IR2037: The UK Interface Requirement 2037 applies for scanning telemetry services.
• IR2078: The UK Interface Requirement 2078 applies for the 60 GHz band

Notes specific to the frequency charts

The first column describes each available frequency band, represented by a diagram (not to scale). The frequency band limits are listed below the diagram; frequencies below 10 GHz are represented in MHz, while those above 10 GHz are in GHz. The width of each guard band is shown above the diagram, and is always specified in MHz.
The channel arrangements in some bands are staggered, so that the width and position of the guard band vary for different channel spacings. In these cases, a table underneath gives details of the guard bands for different spacings (with all frequencies in MHz).
The first column also includes the title of the relevant international recommendations for each band, produced by the European Conference of Postal and Telecommunications (CEPT) or the International Telecommunication Union (ITU). CEPT recommendations are available at http://www.cept.org/ecc/ and ITU Recommendations at http://www.itu.int.
The final column contains the channel spacing for duplex operation in each frequency band except for bands above 60 GHz. Details of standard systems assigned in the UK are shown in the relevant technical frequency assignment criteria.

For Further Information

For More Information on Microwave Planning, Please Contact Us

OFCOM Channel Plans for 60GHz and 65GHz

OFCOM Channel Plans for 60GHz and 65GHz

Here is a chart showing channel plans for the UK

OFCOM - V-Band 60GHz 65GHz
OFCOM – V-Band 60GHz 65GHz

Uses & Applications

58GHz, 60GHz and 65GHz bands are used for Point to Point (P2P) Microwave Radio Links.  Also called V-band

Sources of Data and Graphics

All contents (C) OFCOM and taken from:

OfW48 UK Frequency Allocations for Fixed (Point-to-Point) Wireless Services and Scanning Telemetry This document shows the current bands managed by Ofcom that are available for fixed terrestrial (point to point) links and scanning telemetry in the UK.

Technical regulations

The Radio Equipment and Telecommunications Terminal Equipment Directive
99/5/EC (R&TTED) has been implemented in ‘The Radio Equipment and Telecommunications Terminal Equipment Regulations 2000, Statutory
Instrument (SI) 730. In accordance with Articles 4.1 and 7.2 of the R&TTED
the:
• IR2000: The UK Interface Requirement 2000 contains the requirements for the licensing and use of fixed (point-to-point) wireless services in the UK.
• IR2037: The UK Interface Requirement 2037 applies for scanning telemetry services.
• IR2078: The UK Interface Requirement 2078 applies for the 60 GHz band

Notes specific to the frequency charts

The first column describes each available frequency band, represented by a diagram (not to scale). The frequency band limits are listed below the diagram; frequencies below 10 GHz are represented in MHz, while those above 10 GHz are in GHz. The width of each guard band is shown above the diagram, and is always specified in MHz.
The channel arrangements in some bands are staggered, so that the width and position of the guard band vary for different channel spacings. In these cases, a table underneath gives details of the guard bands for different spacings (with all frequencies in MHz).
The first column also includes the title of the relevant international recommendations for each band, produced by the European Conference of Postal and Telecommunications (CEPT) or the International Telecommunication Union (ITU). CEPT recommendations are available at http://www.cept.org/ecc/ and ITU Recommendations at http://www.itu.int.
The final column contains the channel spacing for duplex operation in each frequency band except for bands above 60 GHz. Details of standard systems assigned in the UK are shown in the relevant technical frequency assignment criteria.

For Further Information

For More Information on Microwave Planning, Please Contact Us

10Gbps MMW Links installed in the Middle East

CableFree 10Gbps MMW links have been installed in the Middle East for Safe City applications

Using the latest 10Gbps Millimeter Wave wireless technology, the links connect customer sites with a full 10Gbps (10Gig-E) full duplex capacity, with no compression or slow-down.

10Gbps MMW Links installed in the Middle East
10Gbps MMW Links installed in the Middle East

CableFree has pioneered high speed 10 Gigabit Millimeter Wave (MMW) technology to connect sites where fibre optics are unavailable, too slow to provision, too expensive or at risk of damage. In busy cities, fibre optics is usually installed in ducts underground which are prone to disruption when digging or building works take place.

This client had already installed fibre optics for major CCTV backbones around the city. However, 3rd party building works disrupted the ducts severing the fibres, causing major outage in the network and loss of CCTV coverage – putting citizens at risk.

10Gbps MMW Links installed in the Middle East
10Gbps MMW Links installed in the Middle East

CableFree 10Gbps Millimeter Wave links offer an ideal alternative to fragile fibre optics: the radio units are installed on sites owned by the customer, bringing the full network under user control and management. The units are typically mounted on building rooftops well away from street-level disruption, which are easy to access, secure and defend. MMW wireless links can be installed in hours, not weeks, and at a tiny fraction of the cost of trenches and ducts for fibre optics.

Reliable operating distances of 5-8km depending on climatic region are ideal for city-scale networks. A full range of planning tools allows users to predict performance prior to purchase or installation. The E-band (70-80GHz) frequencies are available in many countries with “light license” and are uncongested, with narrow “pencil beams” allowing dense re-use of the spectrum with no interference between links or users. The narrow beams make such link are inherently secure, with proprietary signals and encoding.

ACM Automatic Coding Modulation for 10Gbps MMW LinksFor long links, the Adaptive Coding and Modulation feature enables the MMW link to dynamically adjust modulation in high rainfall conditions to ensure link uptime, capacity and range are maximised. For shorter links and long links in low rainfall regions, the links retain 10Gbps at all times.

10Gbps MMW links are a movable asset: if the network requirements change, or different sites require connecting, the links can be moved to the new sites immediately, retaining all the investment in infrastructure. For Special Events and Disaster Recovery, temporary links can be deployed using generator or alternative “off grid” (Solar + Battery) power if no AC power is available on sites. The units can be mounted on tripods or stationary vehicles as required for rapid deployment.

ACM Automatic Coding Modulation for 10Gbps MMW Links
ACM Automatic Coding Modulation for 10Gbps MMW Links

For mobile operators, advanced features such as IEEE 1588v2, SyncE and management are included which make CableFree MMW ideal for RAN backhaul for 4G & 5G networks. CableFree 10Gbps MMW is upgradable to 20Gbps and 40Gbps with “stacking” giving the very highest throughput in the wireless industry, comparable to fibre optic backbone networks.

For more information please visit the CableFree website or contact our expert team:

www.cablefree.net/10g

1024QAM Microwave Links

1024QAM Microwave Links for High Capacity Wireless Transmission

High Capacity Microwave Links from leading vendors use 1024QAM modulation to achieve high capacity, spectral density and efficiency without sacrificing reliability.  This technology sets a new benchmark for microwave transmission capacity for operators including 4G / LTE Backhaul links for mobile operators as well as last-mile links, backbone and other applications.

High Capacity Links require High Order QAM modulation

CableFree Microwave 1024QAM increase from 4QAMLeading long-haul microwave equipment vendors are now using dependable long-distance transmissions using 1024 QAM. Relative to the industry-standard 256 QAM, this represents a 25% increase in capacity (and up to double the capacity of legacy SDH links), with all other factors the same. Compared to older 4QAM modulation the increase to 1024QAM is five-fold. Operators of long-haul microwave links will certainly enjoy the boost to their capacity with 1024 QAM, especially when these upgrades are relatively painless and generally require only a minor and quick swap of equipment.

Adaptive Coding and Modulation (ACM)

ACM with 1024QAM ModulationLeading microwave equipment vendors are able to keep their long-haul transmission links operational even in transient fade and noisy conditions. The enabling technology is ACM: Adaptive Coding and Modulation. Microwave links with ACM technology automatically sense the quality of the transmission link and can automatically decrease the modulation technique in case of degraded signal quality due to interference or other microwave propagation problems such as weather. So, if a microwave transmission is operating at maximum capacity using 1024QAM and suddenly encounters interference or high rainfall, a system such as the CableFree microwave system automatically steps down the modulation to lower levels until the transmission network, although at lower capacity now, maintains the ultra high level of link reliability and availability. As the temporary weather effects disappear, the microwave system automatically re-applies more efficient higher-order modulation techniques to regain full capacity.

Overcoming Tradeoffs due to High Order QAM Modulation

CableFree 1024QAM modulation tradeoffsWith increasing modulation the receiver sensitivity is greatly reduced, and generally transmit power has to be reduced due to linearity constraints in the transmitter.  For fixed modulation speeds the result is either increase of antenna size or reduced distances, which may prevent an operator upgrading to higher capacity.  The use of ACM allows use of 1024QAM whilst avoiding sacrifice of distance or antenna sizes, by graceful step-down of modulation to lower rates during rare periods of high rainfall.

Use along with other bandwidth-enhancing technologies such as XPIC

1024QAM modulation is fully compatible with other methods to increase capacity such as XPIC (Cross Polar Interference Cancellation).  An advanced microwave modem featuring 1024QAM and XPIC can greatly increase capacity.  XPIC alone offers double the capacity compared to a single polarised non-XPIC solution.

1024QAM Microwave Summary

These latest advancements in advanced microwave modulation offer network operators an easy and inexpensive upgrade path to higher capacities to meet demand. Advanced modulation technology of 1024QAM is fully shipping and available today and offers a very cost-effective way to boost capacity in long-haul microwave applications.

For Further Information

For More Information on High Capacity Microwave Solutions, Please Contact Us

 

Full Outdoor Radio (FOR) Microwave Links

Full Outdoor Radio (FOR)

A popular choice for modern IP networks is the Full Outdoor Radio (FOR).  Also called “Zero Footprint Radio”, “All Outdoor Radio”, “Outdoor IP Radio”.

In an FOR, the radio includes the modem, user network interface and all RF processing sections in a single unit.  This is typically mounted on the customer rooftop or tower site mated to a high gain directional antenna.

Connectivity is typically Power over Ethernet (POE) and optional Fibre Optics (SFP) connection

CableFree Full Outdoor Radio
CableFree Full Outdoor Radio with 30cm parabolic antenna

The Full Outdoor Radio (FOR) architecture is popular with:

  • Internet Service providers (ISP)
  • Wireless ISPs (WISPs)
  • 4G/LTE Operators
  • CCTV Networks

Full Outdoor Microwave Radios offer up to 400(364) Mbps and 800(728) Mbps Full Duplex payload (1.6Gbps aggregate capacity) and higher up to 3Gbps or more, 6-38GHz licensed frequency bands.

Using suitable antennas and sites, ultra-long-distance links exceeding 100km can be achieved.   Distances depend on:

  • Frequency band
  • Regional Rainfall
  • Required throughput (Mbps)
  • Desired Availability (%)
  • Antenna size (gain)

For more information on Full Outdoor Radios and Microwave Networks please Contact Us

Welcome to Microwave-Link.com

Welcome to Microwave-Link.com

Find out information on technology, deployment and applications for modern Digital Microwave Links

Microwave Link
CableFree MW Link installed on a telecom tower

Microwave links are widely used for connectivity in modern digital IP networks. With capacities up to 3Gbps and beyond, a modern Microwave Link network can deliver bandwidth in a reliable, cost-effective and flexible manner – without need for disruption and delay caused by digging up streets and avoiding costly leased-line or leased fibre optic alternatives.

On this website you can find more information about radio link deployment and technology.  Also we invite you to contact our experts with any questions by sending a message to us on our contact page.

CableFree Microwave Links used for Mobile Backhaul
CableFree MW Radio Links used for Mobile Backhaul

Microwave links are used extensively in 4G/LTE backhaul networks, 2G (GSM) and 3G (UMTS) mobile operators, wireless metropolitan area networks (Wi-MAN) and corporate networks where high performance, flexibility, speed of deployment and low operating costs are required.  Key features of links include high spectral efficiency (256QAM, 1024QAM, 2048QAM and 4096QAM), Automatic Transmit Power Control (ATPC) and Adaptive Coding and Modulation (ACM).

Globally, MW radio links are used for around 60% of all mobile backhaul connections due to the compelling technical and commercial arguments in favour of MW radio compared to leased line and trenched fibre alternatives.  Speed of deployment and flexibility – the ability to move sites or provision rapidly – are greatly in favour of MW radio over fibre and cabled alternatives.

A Full Outdoor Microwave Link installed for ISP in Iraq with 880Mbps Full Duplex Capacity
A Full Outdoor Microwave Link installed for ISP in Iraq with 880Mbps Full Duplex Capacity

A  link typically features a radio unit and a parabolic antenna, which may vary in size from 30cm up to 4m diameter depending on required distance and capacity.  The radio unit is generally either a “Full Outdoor”, “Split Mount” or “Full Indoor” design depending on operator preference, deployment, features and available indoor space for specific sites and installation.

CableFree FOR3 Full Outdoor 1024QAM Microwave Link
Full Outdoor 1024QAM MW Radio Link

For More information on MW Radio Links please Contact Us