[srslte-users] CRS and Acquisition Procedure

[Remco Vink]

Dear all,

I have been trying to receive the CRS signals to play with some positioning using LTE.
(maybe i will also try receiving the PRS at a later stage)
To do this I have been trying to modify the cell_measurement application.

According to the LTE research i've done the acquisition procedure should be as follows.

1) receive PSS to get symbol timing and cell group identity
2) receive SSS to get frame timing, physical cell identity, transmission modes and Cyclic prefix modes.
3) Start reception of reference signals (which are needed for amplitude and phase references)

The reason I choose the cell_measurement application is because in order to be able to read the MIB and SIB which this application does all these previous steps must be done in advance, leading me to think I can strip this application down to suit my needs.

However I'm sort of struggling with the lack of information and function descriptions of the libraries and code itself.
Are there any sort of flowcharts, documentation available which describes in more detail what all the
"acquisition functions" do in detail???

I am guessing most of the initial setup and acquisition is done in the following functions:


  *   srslte_ue_sync_init_multi
  *   srslte_ue_sync_set_cell
  *   srslte_ue_dl_init
  *   srslte_ue_dl_set_cell

Any help or insights would be greatly appreciated, thanks in advance!

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