The Third Generation Partnership Project’s (3GPP) Spatial Channel Model (SCM) is a stochastic channel model for MIMO Systems. Due to the fixed power levels and angular directions the SCM model does not show the degree of variation which is encountered in real channels. In this paper we propose a modified SCM model which has random sub-path powers and directions and still produces Laplace distributed angular power spectrum. Simulation results on outage MIMO capacity with basic and modified SCM models show that the modified SCM model gives constantly smaller capacity values. Accordingly it seems that the basic SCM gives too small correlation between MIMO antennas. Moreover, the variance in capacity values is larger using the proposed SCM model. Simulation results were supported by the outage capacity results from a measurement campaign conducted in the city centre of Oulu, Finland.
Modified Spatial Channel Model for MIMO Wireless Systems / L. Mucchi; C. Staderini; J. Ylitalo; P. Kyosti. - STAMPA. - (2006), pp. 1-5. (Intervento presentato al convegno IST Summit Conference 2006 tenutosi a Mykonos, Greece nel 4-8/06/2006).
Modified Spatial Channel Model for MIMO Wireless Systems
MUCCHI, LORENZO;
2006
Abstract
The Third Generation Partnership Project’s (3GPP) Spatial Channel Model (SCM) is a stochastic channel model for MIMO Systems. Due to the fixed power levels and angular directions the SCM model does not show the degree of variation which is encountered in real channels. In this paper we propose a modified SCM model which has random sub-path powers and directions and still produces Laplace distributed angular power spectrum. Simulation results on outage MIMO capacity with basic and modified SCM models show that the modified SCM model gives constantly smaller capacity values. Accordingly it seems that the basic SCM gives too small correlation between MIMO antennas. Moreover, the variance in capacity values is larger using the proposed SCM model. Simulation results were supported by the outage capacity results from a measurement campaign conducted in the city centre of Oulu, Finland.File | Dimensione | Formato | |
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