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一种小小区网络下行链路干扰抑制方法
张道煦1, 罗汉文2
1.上海师范大学!上海())(B!# (&!上海())(!)$;2.上海交通大学
摘要:
通过约束小小区下行链路的传输功率来抑制相邻小小区之间的干扰.同时,使用了一种低复杂度的子载波分配方案,可以使得小小区的下行速率尽可能地提高.在对小小区进行下行链路发射功率控制时,使用广义注水算法给出了小小区下行传输功率的最优解.仿真结果显示,子载波选择方案和功率分配算法,在提高小小区的下行传输速率的同时,有效控制了相邻小区间的干扰.
关键词:  小小区  干扰抑制  功率控制  广义注水算法
DOI:
分类号:
基金项目:上海市教育委员会科研创新项目(12ZZ126);上海师范大学重点学科(DZL126)
Small-cell network downlink interference suppression method
ZHANG Daoxu1, LUO Hanwen2
1.College of Information,Mechanical and Electrical Engineering,Shanghai Normal University;2.Electronic and Electrical Engineering,Shanghai Jiao Tong University
Abstract:
In order to control the level of interference among adjacent small-cells effectively,in this paper,we suppress the interference between adjacent small-cells through controlling the small-cell downlink transmission power.Meanwhile,we use a low complexity subcarrier allocation scheme,making small-cell downlink rate be improved as much as possible.In small cell downlink transmission power control,we use a generalized water-filling algorithm which gives the optimal solution of downlink transmission power.Simulation results show that subcarrier allocation scheme and power allocation algorithm can improve small-cell downlink transmission rate and control the level of interference between adjacent small-cell effectively.
Key words:  small-cell  interference suppression  power control  generalized water-filling algorithm