The invention relates to a channel information feedback adaptive transmission and bandwidth allocation method for wireless communication, which belongs to the field of wireless communication technology. The method includes: a base station according to the downlink multiuser communication and data rate of the principle of minimum loss, according to the long-term average energy user uplink and downlink channels, the quadrature amplitude modulation in the upstream channel of the total number of limited feedback symbol is assigned to the user, and to determine the optimal modulation of households each user according to the number and symbol; the optimal modulation feedback using the original codebook subset of the quantized channel allocated by the base station, the optimal orthogonal amplitude modulation through the uplink communication feedback to the base station; the base station orthogonal modulation symbol demodulation to obtain user feedback channel direction information of users. This method ensures the smaller system overhead and additional feedback to maximize use of feedback bandwidth, ensure system and data rate increased with the increase of the transmission power of the base station, a variety of communication services can be used in wireless communication system.
【技术实现步骤摘要】
【技术保护点】
一种用于无线通信系统的信道信息反馈自适应传输和带宽分配方法,其特征在于该方法包括以下步骤:(1)设无线通信系统的移动蜂窝系统中,基站具有N个发射天线,每个用户有一个接收天线,基站和用户使用相同的原始量化码本,基站利用传统的用户调度方法,选择其中的N个用户同时进行服务,其中N为正整数;(2)第k个用户通过统计平均计算得到基站到该用户自身的下行信道的长期平均能量γ↓[d,k](k=1,…,N),并且通过上行信道反馈给基站,其中角标d表示下行信道;(3)基站通过统计平均计算得到第k个用户到基站的上行信道的长期平均能量γ↓[u,k](k=1,…,N),其中角标u表示上行信道;(4)基站按照多用户下行通信的和数据率损失最小的原则,根据每个用户的上行和下行信道的长期平均能量,将上行信道中总数为β个的正交幅度调制反馈符号分配给每个用户;(5)基站通过计算***得到第k个用户最优的上行调制方式M↓[k],其中M为候选的正交幅度调制方式集合{2↑[2],…,2↑[m]}中的任一种调制方式,m≥2表示调制方式的最高阶数,D(*↓[k]log↓[2]M)表示量化比特数为*↓[k]log↓[2]M时,信道方向 ...
【技术特征摘要】
【专利技术属性】
技术研发人员:袁方,韩圣千,杨晨阳,朱大琳,王刚,雷鸣,
申请(专利权)人:北京航空航天大学,日电中国有限公司,
类型:发明
国别省市:11
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