Also, it reduces the data rate significantly. For example, Smartphones do not currently support the Coded PHY features. With Long Range PHY options, it's possible to get much more range in BLE, but it requires both radios to include support for the feature, which is still not common. Coded PHY - Long range 500kbps and 125kbps options that provide increased range.2Mbps PHY - Introduced in Bluetooth v5.0 specification, this provides twice the throughput with a reduction in range.1Mbps PHY - This is the standard BLE modulation available since Bluetooth v4.0.With Bluetooth LE, there are several options for modulation that can be used and have an impact on range: Higher datarates and modulations require higher signal levels, which means shorter ranges. The range performance of Bluetooth LE (and any wireless radio) depends on the modulation used. Now let’s get started by looking at everything that impacts BLE range, starting with the BLE Modulation. Aside from BLE, these approaches are valid beyond just Bluetooth but apply to Wi-Fi and other radios. There are quite a few factors involved in getting the best range and we’re going to cover the most critical aspects that you should do. Getting the most range out of a Bluetooth LE radio is usually a multi-step process that starts at the design phase. Indoor range will be less because of both signal attentuation from walls and objects, as well as multi-path effects (constructive and destructive interference from signals coming at different angles). This is the range without obstructions and without interference. Various other trademarks are held by their respective owners.The range above is an estimate, but free space range is close to an upper limit. WatchGuard and the WatchGuard logo are registered trademarks or trademarks of WatchGuard Technologies in the United States and other countries. If you have a -41dBm signal strength, and a -96dBm noise level, this results in an excellent signal-to-noise ratio of +55dB.If you have a -41dBm signal strength, and a -50dBm noise level, this results in a poor signal-to-noise ratio of +9dB.Lower values than +25dB result in poor performance and speeds. In general, you should have a minimum of +25dB signal-to-noise ratio.This value is represented in decibels (dB).The signal-to-noise ratio (SNR) is the power ratio between the signal strength and the noise level. For example, -96dBm is a lower noise level than
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