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一种LTE双码本预编码选择方案

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摘要 基于波束运算的互信息量计算方式,将遍历码本矩阵转化为遍历波束向量和调相参数,可以解决互信息量计算中存在的大量重复计算问题,同时存储调相信道与波束的乘积,使得互信息的计算可以通过查表获得。通过对整个带宽的子载波进行分组,利用每组信道的平均值计算互信息量,还可以大幅减少所需计算的信道数目。本文在不损失预编码性能的前提下,大幅减少了复数乘法、加法及矩阵逆运算的次数,降低了计算复杂度。
作者 张妍哲
出处 《通讯世界》 2017年第10期295-295,共1页 Telecom World
关键词 LTE 预编码 复杂度
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