摘要
针对单载波频域均衡(SC-FDE)中如何增加系统开销来提高系统性能的问题,研究了SC-FDE的数据帧结构,提出了一种改进的数据帧结构。通过传统数据帧结构将原有UW划分为几块子UW,而数据长度不变,利用几块子UW对信道进行多次估计。然后通过取信道频率响应平均值的方法来提高信道估计的精度,从而提高系统的性能。实验证明,与传统数据帧结构相比,在不增加系统开销的情况下,具有更好的误码性能。
Single Carrier Frequency Domain Equalization can improve system performance in the case of increas- ing system overhead. We investigate the frame structure of SC-FDE and propose an improved frame structure. The proposed frame structure divides the UW of the traditional frame into several sub-UWs and the data maintain con- stant. Thus, the channel estimation is accomplished by the several sub-UWs. Therefore, the accuracy of channel es- timation can be improved efficiently by taking the average value of several channel estimations. Simulation results show that the proposed improved frame is superior to the traditional frame in performance of BER, meanwhile without increasing the system overhead.
出处
《计算机仿真》
CSCD
北大核心
2011年第9期106-108,185,共4页
Computer Simulation
基金
湖南省高校创新平台基金(2009642527)
