I am using “LTE-A-DL-System-Level-Simulator-Rel-v1-9-Q2-2016”, and have checked the code about calculation of SINR in UE.m (line 491): “SINR_linear = RX_power ./ Interference_plus_noise_power;”. I have a question about the calculation of SINR.
In my opinion, SINR=S/(I+N). And S, I, N are all affected by the receiver antenna gain. But in the code, only S and I have considered receiver antenna gain; the noise N is calculated only by thermal noise density, bandwidth, and noise figure.
In general, my question is: Should we consider the effect of antenna gain for I (interference) and N (noise), when calculating SINR? I know this question maybe silly, but I am real confused about it. Hope you could help me. Thanks.
in general, since this is a downlink simulator, we assume a UE at the receiver side that is assumed to have an omnidirectional antenna. Also in the disseration that you reference, only an antenna gain on the transmit-side is considered (for signal as well as interference). In general for the noise power, it is modelled independently from the antenna gain (which is a fair assumption in a cellular wireless comm. context).
Thanks for your kind reply. Sorry for the typing error, the equation making me confused is Eq. (3.16) actually. In this equation, it seems that only S considers the effect of antenna gain; both I and N does not.