Please answer number 3
2(40) In WiMAX, we can deploy TRS or to increase the servicing area or to improve the service quality. As showing the Fig. 2, there are 3 RS (TRS1, NTRS1 and NTRS2), and 4 UE (UE1, UE2, UE3 and UE4) in the eNB serving area. Packet D1 is from eNB to UE1, D2 is from eNB to UE2, and D3 is from eNB to UE3. D4 is from eNB to
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