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In-house communication networks

In the editing and production segments as well as in the home, in-house communication networks for the transmission of audio-visual data are becoming increasingly important with respect to smart phones, tablet PCs and SmartTV. For several years the IRT has been researching the performance capacity of various technologies, supporting broadcasters with planning and launching, and consulting with regard to developments in the home segment.



WIFI technologies

Currently, high-performance WLAN technologies are being introduced in the market. The IEEE 802.11ac Wave2 standard offers greatly higher performance such as 4x4 MIMO, Beamforming, a very high throughput frame in the MAC-layer, an 8-fold modulation process 256-QAM (to code rate 5/6) and up to 160 MHz channel bandwidth. In terms of calculation, this means a maximum gross bit rate (peak rate) of almost 3.5 GBit/s; the actual net data rates, however, also exceed the Gigabit/second threshold. The IRT regularly conducts MIMO and performance measurements of new 11ac-standardised products including TCP, UDP and RTP parameters such as throughput, jitter, delay and lost packets in video streaming. In the case of multi-parallel video streams transmitted via unicasts and a test access point, the playout quality can be assessed based on subjective evaluation.

Audio and video streaming via WIFI

IRT observes the newest developments and different technologies for the prevention of data bottlenecks during the transmission of broadcast and multicast streams and tests their feasibility, especially with regard to broadcast applications. 

Powerline communication PLC

The IRT conducts tests on new Powerline adapters with the HomePlug AV2 specifications. IRT measurements show an increase in throughput and reach of this technology compared with past standards, which is mainly achieved due to the use of MIMO technology integrating the ground wire.   

Your contact:

Markus Berg
Head of Department
Tel. +49 (0)89 32399-279

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