Video connectivity for vehicles

With the help of KARsys technology, vehicles of security authorities can easily be equipped with their own radio link for better connectivity to a remote mission control room either by using SATCOM equipment or with the aid of an optimized LTE solution. Moreover, video links from cameras located close to the mission site to the mission control vehicles can be enabled. Depending on the type of vehicle, the panels may be integrated invisibly into the vehicle's body.  In the described use cases, HiMoNN is an ideal complement to a KARsys based solution that can be complemented with a satellite connection via the IABG-Teleport.

Backhaul links for Radio Base Stations

As part of the Radio Access Network (E-UTRAN), 3G and 4G (LTE) radio base stations (eNodeB) are connected to the core network (Evolved Packet Core, EPC) with so called backhaul links. There is a large variety of link technologies which are used in the highly heterogenous networks existing today and the required bandwidth per backhaul link has grown dramatically in the past years since 2007. Reason is the huge increase of smartphone users that leads to a drastically increasing bandwidth to be supported by the radio base stations and consequently on their backhaul links. In order to support a high bandwidth per user, the size of the cells is getting smaller in order to ensure good coverage and consequently good radio quality. Therefore, very compact radio base stations for small cells are being installed in areas with high data traffic. All these base stations require a backhaul link, which is a major challenge for network operators in terms of cost (installation and OPEX) and network architecture as well as netwqork management. Optical and wired (e.g. Ethernet, DSL) backhaul links are costly to install and an access concentrator box (Switch/Router, DSLAM, etc.) must be nearby, traditional microwave radio links are great for macro cells mounted on towers but often technically inappropriate and too costly for small cell base stations. Therefore, backhaul links working e.g. in the license free 60 GHz ISM band are getting more and more attention.  Backhaul links supporting a self adjusting capability for easy setup and calibration are enabled by the KARsys technology.

Car Connectivity & Car-2-X Comms

LTE based broadband connectivity for cars already exists today. But only few people know, that the achievable throughput of user data and the stability of the connection between car and radio base station (eNodeB) is largely dependent on the quality of the radio link. The modulation and the coding scheme of the radio connection and thus the achievable throughput are allocated by the radio base station based on the Channel Quality Indicator (CQI) which the mobile terminal sends as a feedback w.r.t. the downlink channel quality. Therefore, the goal must be to optimize the radio equipment such that it enables a high link quality whenever possible. This can be achieved with radio beam steering equipment that delivers a much higher gain, i.e. directing the beam towards the antenna tower of the radio base station, rather than using an inefficient omnidirectional antenna.
In difficult reception scenarios e.g. dominated by reflections and multipath effects, it may be better to use a "MiMo" reception scenario rather than beam steering. The KARsys radio modem, which is based on Software Defined Radio (SDR) can dynamically select the optimal reception strategy i.e. it can cognitively switch between reception scennarios. Antenna and RF electronics are designed accordingly.
Furthermore, the same type of radio system can be used for ad-hoc car2car or car2x connectivity, helping to optimize the spectral usage and to minimize the interference with other cars.

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SATCOM connection

Aircraft SATCOM links e.g. in the Ku band enable access to the public internet for the in-cabin WLAN networks installed in today's long-haul aircrafts. The existing aircraft SATCOM antenna solutions are more-or-less box shaped back packs that are mounted on top the aircraft fuselage. They are extremely expensive, quite large and through their height, they cause aerodynamic underpressure and subsequently mechanical stress to the aircraft fuselage and they also increase the kerosin consumption. All the mentioned factors lead to a significant increase of the aircrafts' OPEX that airlines have to bear. A solution for these issues could be flat antenna panels that follow the shape of the aircraft fuselage and support adaptive electronic beam steering, so that the link to the satellite is never lost. The KARsys  technology enables such panels.


Today's long haul aircrafts are equipped with in-cabin WLAN access points enabling passenger Bring-Your-Own-Device (BYOD) based Internet access and In-Flight-Entertainment (IFE). In quite a number of cases, these access points are equipped with omnidirectional standard antennas whose wave propagation charcteristics are less than optimal for the tube shaped aircraft cabin. Directed beams to the users who request the bandwidth will optimize the throughput to these users and increase the user experience and thus the acceptance of the service. Moreover, interference problems and radiation exposure of the passengers who are not on-line would be reduced. Using KARsys technology, the in-cabin radio coverage can be optimized dynamically.

Broadband P2P Link to Ground Station

Unmanned aircrafts (UAVs) are getting more and more common in a broad variety of applications, may it be for video transmission in disaster management or in security applications for the public authorities. But even in sports events and other commercial applications, UAVs represent a cost efficient and more quiet and mechanically calm alternative to manned helicopters with piston engines. These UAVs are remote controlled from the ground station (uplink) and downlink they transmit a video signal for which a broadband radio link is required. At the same time, it must be considered that the UAV keeps moving and the range of the radio link must be large enough to enable useful application scenarios and to avoid safety issues. Adaptive beam steering based on the KARsys  technology is the solution for the challenges described.

SATCOM connection

Using KARsys technology for long haul remote control of UAVs via SATCOM links enables size and weight reduction of the aircraft. It also may help to optimize the operational resolution in the time domain and the latency of the reaction path due to minimized response times of the beam.


Many high speed train passengers have made mediocre experience with the provided internet connectivity in trains, especially at high speeds. However, the train carriers have already made huge efforts to improve the performance of their connectivity services, but it is a major technical and financial challenge for them and their suppliers, the mobile network operators, to provide stable and reliable internet connectivity. Installing radio base stations along the track providing seemless coverage, including the tunnels, represents a huge investment. Therefore, as a complement to LTE connectivity, SOTM links operated e.g. in the Ku or Ka band could help to limit the required investments. In areas of dense data traffic, the SOTM links would enlarge the available data bandwidth and in rural areas they could be an alternative to the relatively high number of required radio base stations along the track, causing high CAPEX. KARsys based SOTM equipment is customized according to the regional requirements of train carriers an the routes they are employed to.

SATCOM connection without radomes

Using the KARsys  flat panel antenna technology for SATCOM links on boats, the traditional antenna radomes can be removed. This does not only give a much better look to the boat, but it also improves aerodynamics and reduces the wind noise when driving fast or under stormy conditions. Furthermore, the KARsys  based technology allows a faster and more accurate tracking and thus a better compensation of the boats movements. Considering the lower total cost of ownership of KARsys  based solutions, it even may be possible to equip smaller and less costly boats with a SOTM solution from VITES.

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Industrial Networks

In the context of Smart Factory (IoT, M2M, Industry 4.0 etc.) environments, meshed industrial wireless networks using WLAN or other wireless technologies will become more and more important, in order to be able to react flexibly to changing manufacturing and maintenance setups. Our solutions based on the KARsys beam forming technology support several directed beams per wireless access point and thus combine mesh capabilities with lower interference, higher range and consequently more efficient use of the available spectrum. In quite a number of the possible industrial scenarios, static beam steering may be sifficient due to the nomadic nature of machines or maintenance equipment. However, thinking of controlling autonomous factory vehicles, adaptive beam steering will be required.

GE-LAN Bridging for Building-2-Building connectivity

KARsys technology helps to realize compact all-in-one flat panel radio systems for ultra high bandwidth P2P Data Links. Operating e.g. in the license free 60 GHz ISM band with a range of up to several hundred meters (LOS) they are ideal for bridging GE-LANs between buildings, corporate facilities or remote installations. Using static beam steering, they support self adjusting and self calibrating and thus are easy to install. Depending on the required range and consequently RF power and type of antenna array, POE might be a solution to support operation with a single cable.

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Video connectivity for Off-Highway-Vehicles

Video links between vehicles in construction and agricultural industries are getting more and more popular, in order to optimize logistics processes and just-in-time availability of trailers, containers, machinery etc.
For high resolution video signals, a large transmission bandwidth is required, therefore the sub GHz ISM bands are usually inappropriate. In higher frequency bands like e.g. the 5.6 GHz band, with the given allowed radiated power it is advisable using adaptive beam forming, as the required range may be up to one KM.

Autonomous Farming

Looking a few years ahead, also in the agricultural industry autonomous mobile machines may help
increasing the efficiency of farming, assuring the production of foods for the still rapidly increasing world population. The connectivity of these machines is a key challenge that needs to be taken care of. In rural areas, standard mobile communication won't necessarily be the solution. Our solutions for SATCOM and ad-hoc networks offer interesting perspectives for solving the particular issues occuring in this context.

Broadband wireless video transmission

In TV studio context, the mobility of the cameras is limited by cables that need to be moved around. Robust broadband wireless links that replace the video cables help to optimize the studio setup and reduce OPEX. KARsys based broadband video links following the movements of the cameras are an interesting use case. By using beamsteering, interference between cameras and with other sensitive studio electronics can be avoided.

Spectrum Measurements

Broadband receivers for frequency / direction scanner measurements, e.g. for EMC pollution measurements are realizable. Depending on the desired frequency bands, the antenna structures will have to be determined. The advantages vs. mechnically rotated antennas are better accuracy, resolution and ability to reproduce the measurement results.