单载波频域均衡系统帧结构的设计  

Design of Frame for Single-carrier Frequency Domain Equalization System

作　　者：朱良彬[1] 文运丰[1] 桑会平[1] 

机构地区：[1]中国电子科技集团第五十四研究所,河北石家庄050081

出　　处：《无线电通信技术》2011年第5期52-54,共3页Radio Communications Technology

摘　　要：在高速无线数据传输中,存在严重的多径衰落,造成频率选择性衰落和符号间干扰,影响数据传输质量。单载波频域均衡(Single Carrier Time-Domain Equalization,SC-FDE)是对抗多径衰落的有效途径之一。重点分析了SC-FDE系统的帧结构设计,通过分析对比,找到一种合适的帧结构设计方案,并对其性能进行了仿真。仿真结果表明该帧结构设计方案能够有效抑制噪声的影响,提高信道估计精度,同时不影响系统的带宽利用率。High speed wireless data transmission faces serious multi-path fading, which leads to frequency-selective fading and inter-symbol interference and affects the quality of data transmission. Single Carrier Frequency Domain Equalization （SC-FDE） is an effective method to mitigate the influence of multi-path fading. The paper analyzes the design of frame in SC-FDE and gives a proper design scheme. The simulation results show that this scheme is useful for reducing the influence of noise and improving the accuracy of channel estimation, without affecting the utilization ratio of the bandwidth.

关 键 词：单载波频域均衡 多径衰落 码间干扰 帧结构 

分 类 号：TN919.22[电子电信—通信与信息系统]