B.2.4 Propagation conditions for CQI tests
36.1013GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Release 18TSUser Equipment (UE) radio transmission and reception
For Channel Quality Indication (CQI) tests, the following additional multi-path profile is used:
,
in continuous time
representation, with 
the delay, a a constant and
the Doppler frequency. The same h(t,τ) is used to describe the fading channel between every pair of Tx and Rx.
B.2.4.1 Propagation conditions for CQI tests with multiple CSI processes
For CQI tests with multiple CSI processes, the following additional multi-path profile is used for 2 port transmission:
Where
represents Hadamard product, 
indicates the 2×2 propagation channel generated in the manner defined in Clause B.2.4.