"If you want to experiment with celluar mobile radios LTE you need a LimeSDR, BladeRF and a help processor."
Why would you need a LimeSDR and a BladeRF ?
I have done plenty of (rx only) GSM/LTE functions with only the (v1) BladeRF ...
If you really want LTE, it's more about xtrx than LimeSDR and BladeRF.
What is a help processor?
Help CPU I meant, something accelerating the signal processing from the software defined radio often a FPGA, field programmable gate array.
If you want to experiment with celluar mobile radios LTE you need a LimeSDR, BladeRF and a help processor.