摘要
提出一种基于码本旋转的自适应码本设计方法,在不改变现有的码本基础矩阵的基础上,根据误码率(BER)和信干噪比(SINR)的统计和估计结果,生成一组新的旋转矩阵码本,并结合反馈开销考虑与原来基础码本矩阵构成双码本矩阵,根据信道的实时变化及时地调整码本的精度,从而能够在有限反馈的情况下更加有效地提高预编码的性能。
A design method of adaptive codebook based on codebook rotation is proposed in this paper. Without changing the existing codebook base matrix,a new set of rotation matrix codebook is generated according to the statistics and estimation results of bit error rate（BER）and signal to interference plus noise ratio（SINR）. Moreover,a dicodebook matrix is constituted in combination with the overhead of the feedback and the original basic codebook matrix. The accuracy of the codebook is adjusted timely according to the real-time change of the channel,so that the performance of the precoding can be improved more effectively within the limited feedback.
出处
《现代电子技术》
2014年第11期1-3,共3页
Modern Electronics Technique
基金
国家自然科学基金项目(61301135)
陕西省科学技术研究发展计划项目(2013JC2-17)
关键词
预编码
自适应码本
码本旋转
旋转矩阵码本
precoding
adaptive codebook
codebook rotation
rotation matrix codebook
