摘要
提出了一种MIMO-OFDM系统中的多载波联合预编码方法。该方法先根据带宽对所有子载波进行分组,然后求出每一组子载波的平均信道信息。最后利用平均信道计算出预编码法的反馈信息。仿真表明,和传统的预编码方法相比,文中提出的方法可以在不损失系统性能的前提下,大大减少预编码计算的复杂度。
This paper proposed a mupli-carrier combined precode method in MIMO-OFDM system.The method devides all the subcarriers into several groups according to the bandwith,and then calculates the average channel information of each subcarrier group.At last,the precode feedback by the each average channel information is calculated.The simulation results indicates that compared to traditional methods,the proposed method can reduce computation complexity greatly while mantaining the system performance.
出处
《信息技术》
2011年第6期8-10,共3页
Information Technology
基金
国家科技重大专项(2009ZX03002-003)
