Interference alignment with efficient dynamic information selection for LTE-A uplink coordinated multipoint systems

Sheng-Yang Huang, Kuang-Min Lin, Juinn-Horng Deng
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引用次数: 4

Abstract

The demand for high data rate and reliable quality of service has increased in nowadays. Multi-user will induce other cells interference which severely degrades the system performance. In this paper, the interference alignment (IA) techniques in uplink (UL) coordinated multipoint (CoMP) system with three different dynamic information selection (DIS) schemes are proposed to enhance the performance of boundary communications. The first scheme is to maximize the sum-rate by selecting optimal information from other base station in a brute force way. The second way is to minimize the number of outage of the communicated link in the MIMO interference channel. The third scheme which maximizes the minimum signal to interference-plus-noise ratio (Max-Min SINR) is proposed take both sum-rate and outage probability into consideration. Simulation results show that the proposed algorithms can increase the sum-rate and reduce the outage probability compared to the conventional UL CoMP system.
基于高效动态信息选择的LTE-A上行协调多点系统干扰对准
目前,人们对高数据速率和可靠的服务质量的要求越来越高。多用户会引起其他小区的干扰,严重降低系统性能。提出了三种不同动态信息选择(DIS)方案下的上行协调多点(CoMP)系统干扰对准(IA)技术,以提高边界通信性能。第一种方案是通过暴力破解的方式从其他基站中选择最优信息,使求和速率最大化。第二种方法是尽量减少MIMO干扰信道中通信链路的中断次数。第三种方案最大限度地提高了最小信噪比(Max-Min SINR),同时考虑了和速率和中断概率。仿真结果表明,与传统的UL CoMP系统相比,所提出的算法可以提高和速率,降低中断概率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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