I have a project where we have 2 nrf51 that need to be time synced with eachother.
The problem is they are placed on the body one on the back and one on the chest of a person.
So the reception is not so good (no line of sight and the human body that shifts the antenne frequency)
For a custom RF setup what are the best parameters to use ?
I already set the TX power to +4dB, the address to 4bytes, crc to 1, i am also using the highest BTLE advertising frequency because of the antenne frequency shift.
And there is less wifi activity in the advertisings channels.
But of these settings I am not sure:
- whitening on/off
- Use 2mB,1mb or 250kb/s
- use BLE_1Mbit or NRF_1MBit (BLE 1MBIT uses a bigger RF bandwith)
- Use hamming errorcorrection for the 4 payload bytes or do I have too less data to make a difference ?
- Should I send as fast as possible or use some delay so the RF can stabalize ?
- Any other thing I can do to make the receiver more sensitive ?