分数频率复用的帧结构及性能分析

针对现代无线通信系统在干扰控制方面越来越高的要求,利用通信帧中子载波的重新分配,提出了帧结构设计中一种新的分数频率复用方法—时频分分数频率复用,并将其与传统的分数频率复用方式进行比较。这一新方法是在对系统容量进行建模之后,综合资源块分配中的时分和频分模式提出的,其对应的帧结构相对于传统的FFR具有更高的调节粒度。实验结果验证了这种设计以少量系统容量为代价,在提升系统公平性、提高边缘用户吞吐率方面的性能优势。

Frame Structure and its Performance Analysis of Fractional Frequency Reuse

Aiming at the increasing rectuirement of interference mitigation in wireless communiation system, this paper raised a new style of frame structure design-"Time-frequency division fractional frequency reuse" by reallocating subcarriers in frames. This new method integrates the modes of time division and frequency division on assigning resource blocks after modeling system capacity. The corresponding frame structure has a more precise granularity for adjustment compared with tradition fractional frequency reuse pattern. I}he results of simulation validate its advantages on system fairness and throughput of edge users, with the cost of slight capacity drop of the entire system.