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Telco: What Is Full Band Capture (DOCSIS)?


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With content streaming becoming increasingly popular across all devices, pay-TV providers have had to up their Creatives game in order to provide subscribers with the quality of service they want. Simply offering a good choice of channels and content is no longer enough – they also have to provide services that will ensure a superior experience.

Many subscribers now want features that enable them to do things such as enjoy whole-home connectivity or record a number of shows at the same time via digital video recorders. This can lead to the need for extra hardware, which then leads to extra costs for providers.

The good news is that there have been developments and changes that have helped to combat this issue. This is thanks to solutions such as Full Band Capture (FBC) digital tuning from Broadcom, which benefits providers in a range of ways. This digital technology enables providers to ensure their gateways and set-top boxes offer impressive channel options and broadband speeds while also benefiting from increased simplicity, speed, and cost-efficiency.

This is achieved through the digitization of spectrums for cable and satellite, which are 1GHz and 950-2150 MHz, respectively.  Digital signal processing, or DSP, is then used to digitally tune multiple channels at once. All new channels feed into a digital demodulator and the need for frequency allocation to buffer various services is eliminated.

More Content

This technology means that providers can offer more content and in-demand services, which means a far better experience and service for users. At the same time, energy consumption can be more than halved. Frequencies that could not be used in the past can be utilized for additional broadband services, and between 8-32 downstream channels of video streaming and internet services can be delivered to various connected devices in the home. This means that the providers can boost their offerings, and uses can enjoy a far superior experience and service.

Remote Control

The remote control experience will also ensure an enhanced experience for users. Channel changes are pretty much instant with digital tuning. However, analog to digital conversion can be a challenge. Revolutionary FBC technology helps to reduce the challenges involved and ensure a smooth and hassle-free transition.

Wave Impairment

One of the main impairments that can be identified on a DOCSIS Full Band Capture downstream spectrum is wave impairment. This is one of a number of impairments that can be detected on a DOCSIS FBC downstream spectrum.

Prior to a potential wave impairment being fitted onto a spectrum, a number of data preparations have to take place. The first thing that has to be done is the stitching together of data, and this is a process that is completed through the use of linear regression. Data is only sent by channels, and these channels also run across the gaps where there is no data. The wave impairment detection algorithm uses linear regression to stitch the data together.

To find out more about full band capture, visit device management experts Axiros.

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