Link Level Modeling For High Speed Wireless Communication System Simulations

The interface between link and system level simulations is important for accurate evaluation of wireless communication systems. Two popular methods, modified actual value interface (AVI) and quasi-static method (QSM) cannot accurately model the E
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variation brought by fading channel and link adaptation. E
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variation brings link performance loss and it is important to model its effect to system performance. A new method is proposed to characterize E
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variation with standard deviation of equivalent E
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in this paper. Subslot is also used as the minimal unit of E
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calculation to achieve more accurate modeling for high velocity. Link level results show the importance of modeling E
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variation, for example, link performance loss can be as high as 2.5 dB when standard deviation of equivalent per-subslot E
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is 5 dB. Furthermore, Simulation results verify that the proposed method can accurately model E
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variation for system level simulations