Table 3 Link-level simulation assumptions
From: System-level performance of LTE-Advanced with joint transmission and dynamic point selection schemes
Parameter | Assumptions used for evaluation |
|---|---|
Scenario | 21 sector hex eNB grid + 4 RRHs per sector |
Channel for eNB | ITU UMa LOS/NLOS [36] |
Channel for RRH | ITU UMi LOS/NLOS [36] |
UE speed | 1 km/h |
Tx point # of antennas | 2, X-pol ±45 deg |
UE # of antennas | 2, X-pol, 0.5λ, 0/90 deg |
Measurement set | 2 strongest, 6-dB threshold |
Scheduler | Round Robin, only CoMP users |
HARQ | 2 retransmissions |
CSI Estimation | Ideal |
Receiver | MMSE |
Codebook | 3GPP 2 Tx [1] |
Feedback | 6PRB granularity, no delay, ideal CQI |
OLLA step-up/down | No delay, /1 dB |