To implement successive interference cancellation (SIC) process, should the receiver know the power allocated to each symbol?
Yes, one would require to know the power of other users. There are two options, the network can either signal the UEs this information in a control frame or the UEs need to estimate the power of the streams allocated for other users (knowing its own power allocated and some smart signal processing).
In any case interference cancellation techniques are suspetible to the &quot;effectiveness&quot; of the cancellation. Usually the SNR degardes rapdily with decrease in estimation accuracy or error in knowledge of the parameters of the other users, such as power