To alleviate the extremely high area spectral efficiency requirement challenge in next generations of cellular networks, dense heterogeneous type networks where base stations transmit with different power levels are been considered operating at new frequencies in millimeter-wave (mm-Wave) band. The high density of the aforementioned networks, unfold with small area cells that even with higher attenuation of mm-Wave signals encounter inter-cell interference. In this work, heterogeneous, and homogeneous downlink cellular networks operating in mm-Wave frequencies are considered, in which all wireless channels are modeled by fluctuating two-ray (FTR); a mm-Wave channel model recently proposed, and shown to fit well with experimental data. Analytical expressions for coverage probability, average rate, and bit error probability under inter-cell interference are obtained. Simulation results show the accuracy of the analytical derivations. Moreover, in some scenarios, FTR channel model exhibits a significant performance degradation over Nakagami, and Rayleigh fading channel models. Finally, one of the auxiliary fading parameters of FTR model, defined as power of line of sight components to that of diffuse component, has the most significant effect on the system performance.

中文翻译：

---

小区间干扰下双射线信道波动的蜂窝下行链路性能分析

为了缓解下一代蜂窝网络中极高的区域频谱效率要求挑战，基站以不同功率电平进行传输的密集异构类型网络被认为在毫米波 (mm-Wave) 频段中的新频率上运行。上述网络的高密度，随着小区域小区展开，即使毫米波信号衰减较高，也会遇到小区间干扰。在这项工作中，考虑了在毫米波频率下运行的异构和同构下行链路蜂窝网络，其中所有无线信道都通过波动双射线 (FTR) 建模；最近提出的毫米波通道模型，并显示出与实验数据非常吻合。覆盖概率、平均率、得到小区间干扰下的误码率。仿真结果表明了解析推导的准确性。此外，在某些情况下，FTR 信道模型比 Nakagami 和 Rayleigh 衰落信道模型表现出显着的性能下降。最后，FTR 模型的辅助衰落参数之一，定义为视线分量对漫射分量的幂，对系统性能的影响最为显着。