![Simulation Report
Piotr Godziewski
Network Engineering LTE
23.09.2009
DL spectral efficiency figures for four representative site grids (different inter site distance)
and all available bandwidth configurations.
MoRSE [MoRSE-LTE-V3.2-02 / lte-v3.3_lte49_pf48_release64.exe]
Date: June/July 2009
Author: Piotr Godziewski
Parameter Value
Operating band 2100 MHz
Channel bandwidth 1.4, 3, 5, 10, 15, 20 MHz
TX power per PRB 0.8 W (for every bandwidth configuration)
Noise power per PRB -112.4 dBm (DL)
Antenna scheme Number of TX antennas = 1
Number of RX antennas = 2 (MRC)
Hexagonal layout ISD = 500, 1732, 3000, 9000 m
3-sector layout, 7 sites, 21 cells
CQI reporting Ideal CQI reporting
3 PRBs measurement window
CQI measurement 1 PRB (1.4 MHz),
bandwidth 2 PRBs (3, 5 MHz),
3 PRBs (10 MHz),
4 PRBs (15, 20 MHz)
Handover Based on path loss and slow fading
Scheduling Product specific implementation
(channel aware with Proportional Fairness)
#UE per TTI 1 (1.4 MHz),
3 (3 MHz),
7 (5 MHz),
10 (10 MHz),
20 (15, 20 MHz)
RBG size 1 (1.4 MHz),
(scheduling granularity) 2 (3, 5 MHz),
3 (10 MHz),
4 (15, 20 MHz)
MCS set QPSK: 1/3, 1/2, 2/3
16QAM: 1/2, 2/3, 5/6
64QAM: 2/3, 5/6, 9/10
Maximum number of 3
HARQ retransmissions
Link Adaptation BLER target = 10% after 1st transmission
Number of users 10 UEs per sector (210 UEs per area)
Service Full buffer
UE speed 3 km/h](https://image.slidesharecdn.com/acrobatdocument-120222112802-phpapp01/85/acrobat-document-1-320.jpg)
![Simulation Report
Piotr Godziewski
Network Engineering LTE
23.09.2009
L1 overhead According to 3GPP 36.211
Propagation
Model 3GPP TR 25.814 (macro cell)
Antenna Horizontal pattern only
2
θ
A(θ ) = − min 12 , Am
θ 3dB
θ 3dB = 70 degrees, Am = 20 dB
(acc. to 3GPP 25.814 Annex 1 Table A.2.1.1-3)
Antenna gain 14 dBi
Penetration loss 0 dB
Slow Fading = 8 dB
De-correlation length = 50 m
Link Level
SNR curves Source: 4GMax
Some of the obtained values have been questioned due to simulator accuracy (implementation
issues) therefore in few cases the reference spectral efficiency for 10MHz is used and
modified according to trend less resources worse performance. Figures subjected to
modification are marked below. The trend has been taken from Figure 9.22 of “LTE for
UMTS. OFDMA and SC-FDMA Based Radio Access” by HH/AT.
ISD Spectral efficiency [bps/Hz]
1.4 MHz 3 MHz 5 MHz 10 MHz 15 MHz 20 MHz
500m 0.77 1.03 1.15 1.19 1.21 1.22
1732m 0.72 0.97 1.08 1.11 1.14 1.15
3000m 0.71 0.87 0.88 0.98 0.98 0.98
9000m 0.54 0.58 0.58 0.67 0.71 0.80](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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- 1. Simulation Report Piotr Godziewski Network Engineering LTE 23.09.2009 DL spectral efficiency figures for four representative site grids (different inter site distance) and all available bandwidth configurations. MoRSE [MoRSE-LTE-V3.2-02 / lte-v3.3_lte49_pf48_release64.exe] Date: June/July 2009 Author: Piotr Godziewski Parameter Value Operating band 2100 MHz Channel bandwidth 1.4, 3, 5, 10, 15, 20 MHz TX power per PRB 0.8 W (for every bandwidth configuration) Noise power per PRB -112.4 dBm (DL) Antenna scheme Number of TX antennas = 1 Number of RX antennas = 2 (MRC) Hexagonal layout ISD = 500, 1732, 3000, 9000 m 3-sector layout, 7 sites, 21 cells CQI reporting Ideal CQI reporting 3 PRBs measurement window CQI measurement 1 PRB (1.4 MHz), bandwidth 2 PRBs (3, 5 MHz), 3 PRBs (10 MHz), 4 PRBs (15, 20 MHz) Handover Based on path loss and slow fading Scheduling Product specific implementation (channel aware with Proportional Fairness) #UE per TTI 1 (1.4 MHz), 3 (3 MHz), 7 (5 MHz), 10 (10 MHz), 20 (15, 20 MHz) RBG size 1 (1.4 MHz), (scheduling granularity) 2 (3, 5 MHz), 3 (10 MHz), 4 (15, 20 MHz) MCS set QPSK: 1/3, 1/2, 2/3 16QAM: 1/2, 2/3, 5/6 64QAM: 2/3, 5/6, 9/10 Maximum number of 3 HARQ retransmissions Link Adaptation BLER target = 10% after 1st transmission Number of users 10 UEs per sector (210 UEs per area) Service Full buffer UE speed 3 km/h
- 2. Simulation Report Piotr Godziewski Network Engineering LTE 23.09.2009 L1 overhead According to 3GPP 36.211 Propagation Model 3GPP TR 25.814 (macro cell) Antenna Horizontal pattern only 2 θ A(θ ) = − min 12 , Am θ 3dB θ 3dB = 70 degrees, Am = 20 dB (acc. to 3GPP 25.814 Annex 1 Table A.2.1.1-3) Antenna gain 14 dBi Penetration loss 0 dB Slow Fading = 8 dB De-correlation length = 50 m Link Level SNR curves Source: 4GMax Some of the obtained values have been questioned due to simulator accuracy (implementation issues) therefore in few cases the reference spectral efficiency for 10MHz is used and modified according to trend less resources worse performance. Figures subjected to modification are marked below. The trend has been taken from Figure 9.22 of “LTE for UMTS. OFDMA and SC-FDMA Based Radio Access” by HH/AT. ISD Spectral efficiency [bps/Hz] 1.4 MHz 3 MHz 5 MHz 10 MHz 15 MHz 20 MHz 500m 0.77 1.03 1.15 1.19 1.21 1.22 1732m 0.72 0.97 1.08 1.11 1.14 1.15 3000m 0.71 0.87 0.88 0.98 0.98 0.98 9000m 0.54 0.58 0.58 0.67 0.71 0.80