Network_Radio
good understanding on cell-less and cellular:
Good survey (O-RAN):
https://arxiv.org/pdf/2202.01032.pdf
Best Understanding O-RAN:
https://www.bsi.bund.de/SharedDocs/Downloads/EN/BSI/Publications/Studies/5G/5GRAN-Risk-Analysis.pdf;jsessionid=0DE61F5BDF4BF8DA8975D828D3546FD1.internet082?__blob=publicationFile&v=7
Thesis on CRAN : https://backend.orbit.dtu.dk/ws/portalfiles/portal/123876544/ACheckoPhDThesisCRANFinalRC.pdf
https://www.researchgate.net/publication/330924336_Multi-Channel_Access_Solutions_for_5G_New_Radio :Nurul Huda Mahmood
Very good ( CRAN/Protocol Stack)