The data sheets for the C1121 don't give a 100kbps example but they do give a 200Kb/s 200Khz example using 4-GFSK
Am I correct in assuming that I can program the C1121 to use 4-GFSK in a 100Khz band to get 100kbps data rate without exceeding the required attenuation in the neighbouring channels to meet EN-300-220-1 or FCC15.24
Also any idea of the settling time I require if I am using 100Khz channels in 868 -870 Mhz and want to use Frequency hopping between multiple channels for noise avoidance.
Want to implement a frequency hopping scheme using 100Khz channels and the CC1121 receiver in the open bands for 868 which will give me 11 channels at 25mW or so. If I implement LBT and frequency hopping I can get around the EN 300-220-1 limitation that I only transmit every 100ms or so because the limit only applies per channel and switching to another channel means that I can transmit again straight after the LBT timeout.
If I get this right willing to post the solution as an open standard for a master multiple slave configuration where the CC1121 replaces wired serial bus (RS485/422) type configuration. Its not really designed for low power, rather removing wires and reasonably low latency with guaranteed throughput for each of the devices on the bus. In the protocol the master sends beacon packets and the slaves use slotted back off which allows for 2 way communications without each device being polled explicitly. Taking into account that EN300-220-1 sees a poll be a master and the reply by the slaves and any acknowledgement as a single channel access.
I need it in near real time command and control environment (response time < 1 second rather then <10ms SCADA type environments)
Would like to know if possible before I spend money on an SDK and effort on programming the solution whether I am likely to have a chance of success.