Table 3 Simulation parameters
From: Automated uplink power control optimization in LTE-Advanced relay networks
System parameters | |
|---|---|
Carrier frequency | 2 GHz |
Bandwidth | 10 MHz |
Number of PRBs | 48 for data + 2 for control channel |
PRB bandwidth | 180 kHz |
Highest MCS | 64-QAM, R = 9/10 (SEmax = 5.4 bps/Hz) |
Penetration loss | 20 dB on DeNB-UE and RN-UE links |
Bandwidth efficiency (Beff) | 0.88 |
SINR efficiency (Aeff) | 1/1.25 |
Overhead scaling (S) | 0.75 |
Thermal noise PSD | −174 dBm/Hz |
SINR lower bound | −7 dB |
Normalization factors | |
(κ5%, κ25%, κ50%) | Urban Scenario: (120.8, 279.6, 428.3) |
Suburban Scenario: (16.6, 96.0, 334.0) | |
eNB/DeNB Parameters | |
Transmit power | 46 dBm |
Antenna gain (incl. cable loss) | 14 dBi |
Antenna configuration | Tx-2, Rx-2 |
Noise figure | 5 dB |
Antenna pattern (horizontal) | A(θ) = −min[12 (θ/θ3dB)2, Am] θ3dB = 70° and Am = 25 dB |
UE parameters | |
Maximum transmit power | 23 dBm |
Antenna configuration | Tx-1, Rx-2 |
Antenna gain | 0 dBi |
Noise figure | 9 dB |
RN parameters | |
Maximum transmit power | 30 dBm |
Antenna configuration | Tx-2, Rx-2 |
Antenna gain (incl. cable loss) | |
Relay Link | 7 dBi |
Access Link | 5 dBi |
Relay link antenna pattern (horizontal) | A(θ) = −min[12 (θ/θ3dB)2, Am] θ3dB = 70° and Am = 20 dB |
Access link antenna pattern | Omni-directional |
Noise figure | 5 dB |
Channel models | |
Distance & path loss | R [km] & PL [dB] |
Direct link (eNB/DeNB – UE) | |
PL(LOS): 103.4 + 24.2log10(R), PL(NLOS): 131.1 + 42.8log10(R) | |
ISD 500 m—urban model | |
Pr(LOS) = min(0.018/R, 1) (1 – exp(−R/0.063)) + exp(−R/0.063) | |
ISD 1732 m—suburban model | |
Pr (LOS) = exp(−(R – 0.01)/0.2) | |
Access link (RN – UE) | |
PL(LOS): 103.8 + 20.9log10(R), PL(NLOS): 145.4 + 37.5log10(R) | |
ISD 500 m—urban model | |
Pr(LOS) = 0.5 – min (0.5, 5exp(−0.156/R)) + min (0.5, 5exp(−R/0.03)) | |
ISD 1732 m—suburban model | |
Pr(LOS) = 0.5 – min (0.5, 3exp(−0.3/R)) + min (0.5, 3exp(−R/0.095)) | |
Relay link (DeNB – RN) {a & b account for the site planning gain} | |
PL(LOS): 100.7 + 23.5log10(R), PL(NLOS): 125.2 + 36.3log10(R) – b | |
ISD 500 m—urban model | |
Pr (LOS) = 1 – (1 – (min(0.018./R, 1)(1 – exp(−R/0.072)) + exp(−R/0.072)))a | |
ISD 1732 m—suburban model | |
Pr(LOS) = 1 – (1 – exp(−(R – 0.01)/0.23))a | |
a = 3 & b = 5 towards DeNB, whereas a = 1 & b = 0 towards other DeNBs | |
Shadowing | |
Shadow fading | Log-normal |
Standard deviation | 8 dB (direct link), 10 dB (access link), 6 dB (relay link) |
De-correlation distance | 50 m |
Correlation factor | 0.5 between sites & 1.0 between sectors |