Where to get snr

Active Oldest Votes. And only from it. It sounds strange for me, because interference is a value calculated with other received signals, inclusively those ones that are not from GSM. And 3GPP is not Google. Android is a huge and complex project with more than 12 million lines of code. There will be no holy grail, because different devices owns different maybe closed hardware drivers. We'll need to support different softwares for each different device.

Maybe, you'll need to recompile an entire Android ROM for each device, if you need to have a correct value for all device. Improve this answer. Marcelo Marcelo 1, 5 5 gold badges 20 20 silver badges 37 37 bronze badges. Add a comment. How to find SNR for Wcdma?

Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Does ES6 make JavaScript frameworks obsolete? Podcast Do polyglots have an edge when it comes to mastering programming Featured on Meta. Now live: A fully responsive profile. Linked Related Hot Network Questions. To demonstrate the impact of different target SNR margins on downlink connection speeds, here are some results from an ADSL connection based in rural Cambridgeshire.

With the modem used the Billion N , it has been possible to demonstrate how the downlink connection speed is affected by the target SNR margin. In this example, the downlink speed is only kbps when the target SNR margin is set at 18 dB, which is substantially lower than the kbps achieved by the BT default target SNR margin of 6 dB.

With this particular connection, it was possible to reduce the target SNR margin to only 1 dB, while maintaining the reliability of the connection, to achieve an amazing kbps downlink connection speed. Table: Effect of target SNR margin on downlink connection speed. Please bear in mind that lowering the downlink target SNR margin can increase the number of line drops or line errors, and not all lines with be stable at 3 dB SNR margin or lower.

However, you can try to see what target SNR margin works best for your line, to get the optimum balance between reliability and connection speed. Particularly where you have made significant improvements to your line for example, by purchasing a new modem or installing a faceplate broadband filter your line may be able to tolerate substantial reductions in target SNR margin without adversely affecting reliability.

The ability to tweak the target downlink SNR margin depends critically on the make and model of your modem. Depending on your particular model of broadband modem, there are a number of methods for tweaking the target SNR margin, which include:. Of all the methods, by far the easiest is to purchase a Billion modem router. Target SNR margin adjustment with these modems is very simple, and the modems store the SNR settings even when they have been switched off.

DGTeam provides unofficial custom firmware developed for selected Netgear modems. This firmware allows the downlink target SNR margin to be adjusted which cannot be done using the standard Netgear firmware. The firmware is free of charge to download, and versions are available for the following models:.

We have regularly used the DGTeam firmware over a number years, and have found it very reliable and easy to use. We still, however, find that broadband connections made with our favourite Billion modems are generally more robust than with Netgear modems — with or without the DGTeam firmware. This means that if BT has increased your target SNR margin to 15 dB, for example, you will only be able to decrease this to about 9.

RouterStats is powerful free software which runs with Windows or Linux that connects to your modem to provide a comprehensive range of statistics and graphs. For example, you can monitor over time the actual SNR margin and the number of errors experienced on your line, which can help to diagnose problems.

RouterStats can be configured to work with a broad range of modems, including:. They point out that all routers are different and users may need to do some detective work to get RouterStats working with a particular modem. We find the RouterStats software is relatively complicated to use, but if you have the time to search the Internet for support information, then it may provide a cost-effective way to change the target SNR margin.

If the table above is rather confusing, the table below presents the information in a different way. Basically, you start off with whatever your default target SNR margin value is, and work your way down the table to increase speed until you find the optimum setting for your line. You can always reset back to the default value by using the number