Abstract
Ground reflection (two-ray) model is one of the propagation that can be employed with various systems for wireless communication. Consequently, the WiMax system above ground reflection model is proposed in this paper to evaluate the path gain, received power and the performance of the system. Two twenty-five meter-high transmit antennas and two one point two meter-high receive antennas are used in this simulations. Moreover, a space time block code (STBC) in OFDM (Orthogonal frequency division multiplexing) is used as well. In this paper, the path gain and the received power are proposed for ground reflection model that depend on various parameters. For different frequency, the path gain of low frequency is higher than high frequency.The path gain of ground is different from dry concrete before Rb distance. The performance of the added gain of transmit antennas is very significant for the system for the limited distance that depend on the system.
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