高频段蜂窝系统容量分析

高频段(6-15GHz)有丰富的带宽资源可用于移动通信。根据实测数据，将现有频段系统的路径损耗模型在一定条件下推广到高频段系统。在六边形蜂窝系统模型上对高频段蜂窝系统进行容量仿真分析。同时，建立了高频段和低频段系统联合覆盖的蜂窝模型，分析高、低频段系统协同工作下的系统容量。结果表明：高频段系统在与低频段系统同等带宽条件下可具有较高的峰值速率，在具有更大的带宽优势下，可极大的提高系统容量；高、低频段联合覆盖系统可同时兼顾系统峰值速率和覆盖能力。

Analysis of capacity in cellular system over high-frequency

Much wider spectrum can be found in higher frequency band, which is available for mobile communication. According to the measured path-loss of higher frequency, in some scenario, the path-loss model of the existing mobile system is extended to the one over high frequency. The capacity of high-frequency system is studied over a hexagonal cellular model. And the capacity of combined system is also investigated over a cellular model, which is covered by low and high frequency system together. The results are that high-frequency can reach higher system peak rates when different frequency system has the same bandwidth, and the system capacity can be greatly improved in high-frequency system when taking the advantage of wider bandwidth in high frequency band. Also, better system peak rates and coverage capability can be achieved in combined cellular system.