# Separation of Inputs

**URL:** <https://discourse.myriadrf.org/t/separation-of-inputs/5216>\
**Category:** LimeSDR\
**Created:** [3 October 2019 17:05 UTC](https://discourse.myriadrf.org/t/separation-of-inputs/5216 "2019-10-03T17:05:46Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![BLACKAGAIN](https://avatars.discourse-cdn.com/v4/letter/b/958977/32.png) [@BLACKAGAIN](https://discourse.myriadrf.org/u/BLACKAGAIN)\
**Post date:** [3 October 2019 17:05 UTC](https://discourse.myriadrf.org/t/separation-of-inputs/5216/1 "2019-10-03T17:05:46Z")

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Hello,  
referring to the LMS7002M internal block diagram here: [https://myriadrf.org/news/limesdr-made-simple-part-2-matching-lms7002m-rx-iq/](https://myriadrf.org/news/limesdr-made-simple-part-2-matching-lms7002m-rx-iq/), i have a question:

In the transmit side, on the right hand side of the figure, it can be clearly seen that there are two paths in each channel. Each path separately goes into a DAC each, and the following components. Clearly these are the digital signals I and Q corresponding to a frequency Wosc(the TXmix frequency).

But when you generate a signal in MATLAB and export it to LimeSDR using the command :  
LMS\_SendStream, in the "samples " buffer, how is I and Q data placed?

Is it like: samples = I + jQ or is it like samples = [I Q]…or some other way?

Basically does the baseband processor seperate the samples signal above into 2 independent data paths called I path and Q path?

remember, all this is in MATLAB.

Thanks