Software solution analyses DOCSIS 3.1 signals
Rohde & Schwarz is offering a solution for analysing DOCSIS 3.1 signals. Cable TV network operators and manufacturers of cable TV network components can use the R&S DSA DOCSIS snapshot analysis software and the R&S FSW high-end spectrum analyser to carry out performance measurements.
The software makes it possible to quickly and reliably characterise downstream signals of up to 192 MHz.
The R&S DSA software works in combination with the high-end signal and spectrum analyser, which records the signals using OFDM vector signal analysis software. The signal and spectrum analyser provides an analysis bandwidth of 320 MHz.
It can therefore be optimally adapted to different signal levels and bandwidths. The software analyses the I/Q samples recorded by the analyser and outputs diverse MER values as well as bit and codeword error statistics that comprehensively describe the quality of a DOCSIS 3.1 signal. The software provides a straightforward graphical display of MER vs. subcarrier to allow easy detection of interferers and other negative influences in the transmission channel.
The analysis solution is optimised for use in the research and development of cable TV network components. It allows the signal quality of modulators for the DOCSIS 3.1 downstream to be tested when developing cable headends. For cable TV network components, the analysis software makes general performance measurements. The software is also able to measure complete network segments under lab conditions. These measurements can be performed using the R&S CLGD DOCSIS cable load generator.
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