无线电波传播模型主要用于计算无线电波传播路径损耗中值.针对宏小区无线电波传播需要考虑地形、环境类型以及构成环境的材料等各方面因素,研究了奥村经验模型中参数的算法和取值,用MATLAB仿真依据线性回归校正算法校正奥村经验模型.仿真结果表明,在频率一定的情况下,随着收发距离d的增加,电波传播路径损耗也增大;建筑物的密度越大,电波传播路径损耗越大.仿真结果与实际环境测试数据一致,也验证了校正的奥村经验模型的可靠性.%Radio waves propagation model is mainly used for calculation of mid-value of path loss of radio waves propagation. According to various factors of terrain, environmental type and materials constituted environment of macro cell radio waves propagation, the paper studied the algorithm and selection value of parameters of the Okumura empirical model, and used MATLAB simulation and linear regression correction algorithm to correct Okumura empirical model. The simulation results showed that when frequency is certain, with the increase of transceiver distance d, path loss of wave propagation also increases and with increase of building density, the path loss of wave propagation is bigger. The simulation results and the actual environment test data are consistent. They verify reliability of corrected Okumura empirical model.
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