摘要
为解决时分双工长期演进(TD-LTE)系统中下行单流波束赋形算法计算复杂度高的问题,在基于有效功率最大化准则和信道平均思想的基础上,提出了一种基于码本的波束赋形算法。该算法通过构建下行波束赋形权值码本,并根据信道估计信息对预设码进行搜索,从而实现快速单流波束赋形。仿真结果表明,该算法使单流波束赋形的复杂度大大降低,并且误块率性能较最优的奇异值分解算法损失不大。
To solve the problems of high computational complexity in single-stream beamforming algorithm for time division duplex （TDD） long term evolution （LTE）, a new beamforming algorithm based on codebook is presented by using the idea of channel average and maximizes effective power of transmitted signals.The algorithm makes single-stream beamforming more efficient by con- structing a weights codebook and searching it according to the channel estimation information. Simulations show that the algorithm reduces the computational complexity of single-stream beamforming enormously and performance loss is very small.
出处
《电子技术应用》
北大核心
2014年第4期113-115,共3页
Application of Electronic Technique
基金
陕西省教育厅专项科研计划项目(12JK0535)
