摘要
提出了一种基于多项式模型的空时信道联合估计方案,它借助于WCDMA上行链路DPCCH信道中的导频符号进行空间、时间信道联合估计,同时获取波束形成加权向量和最大比RAKE合并加权系数,降低了信道估计的复杂度。文章最后通过计算机仿真对本方案的有效性和可靠性进行了验证,结果表明本方案能有效地跟踪快速运动情况下的空时信道的变化,对于2D-RAKE接收机在WCDMA系统中的实际应用具有现实意义。
In this paper,a space-time channel estimation approach based on the model of polynomial is proposed. With the aid of pilot symbols in DPCCH,it can estimate the channel distortion effectively in fast moving cases. At the same time,breamforming vector and RAKE combining coefficients can be calculated.The calculating quantity is reduced.It contributes to the wide using of 2D-RAKE receiver in WCDMA.Finally,computer simulations verify the validity and reliability of the approach.
出处
《通信技术》
2006年第S1期123-127,共5页
Communications Technology
