极化捷变减小室内传播时延扩展

Study on fast-polarization-hopping to mitigate indoor propagation delay spread

减小室内传播时延扩展对提高室内无线通信系统的性能有重要意义。通过深入研究了室内各种不同极化波的传播特性,分析指出小倾角正交极化波的正交性在室内传播中能较好保持,并在此基础上提出一种利用极化捷变减小室内传播时延扩展的思路。理论推导和仿真结果证明了其有效性。

Mitigation of indoor propagation delay spread has far-reaching meaning in wireless communication. The propagation characteristics of various indoor polarized waves are studied in this paper. Analysis shows that the orthogonality of orthogonal polarized waves with a small polarization obliquity can be well kept during indoor propagation. Based on this principle, a method is proposed to mitigate indoor propagation delay spread by Fast-Polarization-Hopping. The effectivity of the method proposed is validated by the theoretical deduction and simulation results.