A New Subcarrier Allocation Strategy for MIMO-OFDMA Multicellular Networks Based on Cooperative Interference Mitigation

Table 1

Simulation parameters.

Parameter	Value/assumption
Cell radius	1000 m
Tiers around the central cell	1, 2
Number of cells	7/19 (1/2 tiers of cells, resp.)
Carrier frequency	2.5 GHz
Modulation types	QPSK/16-QAM
BS/MS height	30/1.5 m
Propagation	Okumura-Hata, path loss exponent 3.5
Standard deviation for shadow fading	8 dB
Azimuth dispersion	Laplacian distribution, azimuth spread 5°
Maximum power per BS/MS	43/30 dBm
Radiation pattern of the antenna element	Broadside gain = 14 dBi; 3 dB beamwidth = 70°; Front-to-back ratio = 20 dB
Total bandwidth	10 MHz
Thermal noise level at MSs (𝐼𝑜)	−104 dBm
Total subcarriers per sector	128
Subcarriers per MS	5, 7, 10
Bandwidth per subcarrier	78.125 KHz