Phase | Downlink framework | Uplink framework |
---|---|---|
First | kth Cell site estimates H kl then H lk  = H kl ′, ∀l | kth Cell site estimates H kl , ∀l |
Second | kth Cell site designs F k  = Fk,LFk,R | kth cell site designs G k  = Gk,LGk,R |
Uses (3) to design Fk,L to satisfy (4) | Uses (6) to design Gk,R to satisfy (7) | |
Designs Fk,R using (5) (see Section 3) | Designs Gk,L using (8) (see Section 3) | |
Third | kth User estimates H kk F k or H kk Fk,L | kth User estimates Gk,RH kk |
Fourth | kth User designs G k using (5) (see Section 3) | kth User designs F k using (8) (see Section 3) |
Fifth | kth Cell site transmits data to kth user | kth User transmits data to kth cell site |