1 Introduction
1.1 Related work
1.2 Contributions
2 System model
3 Theoretical performance analysis
3.1 Modified planar Wyner model
3.2 Capacity of ZF
3.3 Capacity of LMMSE
3.4 Performance analysis
4 Inter-cluster interference coordination strategies
4.1 Dynamic clustering
4.2 Static clustering with adaptive FFR
5 Realistic network performance analysis
5.1 Simulation setup
Cell parameters | |
Number of cells, N
| 21 |
Cluster size, B
| 3 |
Cell radius, R
| 1 km |
Coordination distance, D
c
| 350 m |
User distribution | Uniform |
Load distribution | Symmetric |
MIMO parameters | |
Number of transmit antennas, N
T
| 2 |
Number of receive antennas, N
R
| 4 |
Channel model | |
Carrier frequency | 800 MHz |
Reference distance | 100 m |
Path loss exponent | 3.7 |
Shadowing model | Log-normal |
Shadowing variance | 10 dB |
Fading | Narrowband, Rayleigh |
Power Allocation | |
Transmitted power of each MS | 23 dBm |
Scheduling | |
Algorithm | Proportional fair (PF) |
Fairness time window | 10 TTIs |
5.2 The results
Load (MSs/cell) | 5 | 10 | 15 | 20 | 25 | 30 |
---|---|---|---|---|---|---|
Classification accuracy (%) | 88.72 | 90.3 | 87.98 | 90.62 | 90.62 | 88.94 |
Misclassified cluster-centre MSs (%) | 8.6 | 3.76 | 9.18 | 6.5 | 3.21 | 5.44 |
Misclassified cluster-edge MSs (%) | 2.68 | 5.94 | 2.84 | 2.88 | 6.17 | 5.62 |