Distributed Interference Alignment Algorithm for Multiple-Input Multiple-Output Networks with Uncoordinated Interference
Distributed Interference Alignment Algorithm for Multiple-Input Multiple-Output Networks with Uncoordinated Interference
复制标题
具有不协调干扰的多输入多输出网络的分布式干扰对齐算法
DOI：
10.1007/s12559-012-9195-7
复制
发表时间：
2013
影响因子：
5.4
通讯作者：
Liu Jian
中科院分区：
文献类型：
--
作者：
Zhong Liang;Zhu Guangxi;Kong Zhengmin;Liu Jian
针对非协调干扰的多天线干扰信道，提出了一种新的两步干扰对准波束形成算法。该算法利用系统中所有可用的自由度，利用总最小二乘法对信号空间进行子空间分割。该算法还以均方误差最小为准则，使系统的和速率最大化。仿真结果表明，在具有非协调干扰的网络环境下，该算法的和速率优于以往的和速率。在不同的非协调干扰强度下，比较了这些算法的性能水平。对于和速率性能，也得到了几乎相同的趋势。
This paper introduces a novel two-step interference alignment beamforming algorithm for a multiple-antenna interference channel with uncoordinated interference. The proposed algorithm performs subspace division of the signal space by using the total least squares method to use all available degrees of freedom in the system. The algorithm also uses the minimum mean square error as a criterion to maximize the sum rate of the system. Simulation results indicate that the sum rate of the proposed algorithm outperforms the sum rates of previous works in the context of a network with uncoordinated interference. The performance levels of these algorithms are also compared for different uncoordinated interference strengths. Almost the same trend is obtained for the sum rate performance.