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文中针对第三代移动通信标准WCDMA下行链路的结构,提出了一种新的帧结构,即仅在帧头和帧尾放置一些导频信号,并且专用数据信道结合进行的信道估计方法。仿真表明本方案有效地提高了信道参数估计的准确度,其性能比传统的时分导频结构信道估计的方案有了一定的改善,且明显提高了高达20%信道带宽的利用率,具有一定的实用价值。
Aiming at the structure of the WCDMA downlink of the third generation mobile communication standard, a new frame structure is proposed, in which only some pilot signals are placed at the frame header and the end of the frame, and the dedicated data channel is combined with the channel estimation method. The simulation results show that the proposed scheme can effectively improve the accuracy of channel estimation and improve the performance of channel estimation compared with the traditional TDK channel estimation scheme. The proposed scheme obviously improves the utilization of channel bandwidth up to 20% Practical value.