bandwidth and payload length of 52833

Hi Nordic,

One of my customer do business with Japan company, they employ nRF52833 and SDK17.1.0, they have two questions.

1.What is the bandwidth of coded phy.

As for WIFI, we can set the bandwidth as 20M or 40M, so what's the bandwidth of Coded phy S8 and S2, is it 2M or 125K/500k?

2.When dealing with DTM test, the maximum of Payload length is 255(PRBS9 Model), It's OK with the 1M/2M phy, but when we select the coded phy, it seems not work.

So what's the maxinum Payload length of coded phy?

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0 user108933 over 4 years ago

Hello Helen,

The occupied bandwidth of Coded PHY depends on the configuration of S. it could be either 2 or 8.

a. When S= 8, which is 1M PHY, where 8 symbols represent each data bit, so effective bandwidth 1M/8 = 125Kb
b. When S=2, which is 1M radio PHY, where 2 symbols represent each data bit; so effective bandwidth 1M/2 = 500Kb

You can look at this link to have details How to Achieve Ranges of over 1 Km using Bluetooth Low Energy (LE Coded PHY) - Novel Bits explanation.

Thanks.

Best Regards,

Kazi Afroza Sultana
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0 user108933 over 4 years ago

Hello Helen,

The occupied bandwidth of Coded PHY depends on the configuration of S. it could be either 2 or 8.

a. When S= 8, which is 1M PHY, where 8 symbols represent each data bit, so effective bandwidth 1M/8 = 125Kb
b. When S=2, which is 1M radio PHY, where 2 symbols represent each data bit; so effective bandwidth 1M/2 = 500Kb

You can look at this link to have details How to Achieve Ranges of over 1 Km using Bluetooth Low Energy (LE Coded PHY) - Novel Bits explanation.

Thanks.

Best Regards,

Kazi Afroza Sultana
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Vote Up 0 Vote Down

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