摘要
针对短波信道微观多径干扰引起信道的扩展,提出了窄带短波单音串行数据通信模式下的时变信道系数信道均衡算法(VCC-DDEA);该算法屏弃了传统(DDEA)算法中信道系数在一帧数据范围内恒定的假设,相对DDEA算法性能有显著提高。在保持训练序列长度不变的情况下,通过延长数据帧中用户数据的长度,在相同的误码率下,可提高系统数据率达15%。仿真验证了VCC-DDEA算法的有效性和提高系统数据率方案的可行性。
According to channel spread and fading caused by micro multi-path interference in high frequecny（HF） channel,the time-varying channel coefficient of data directed equalization algorithm DDEA（VCC-DDEA）in narrow-band HF single serial tone channel communication is proposed.VCC-DDEA abandons the hypothesis that the channel coefficients are constant for DDEA in the frame and obtains conspicuous performance improvement compared to DDEA.The data rate is improved by lengthening user data in the frame,which can improve data rate upto 15% for the same bit error rate（BER） performance.Simulation validates the efficiency of VCC-DDEA and feasibility for improving data rate.
出处
《电波科学学报》
EI
CSCD
北大核心
2012年第3期609-614,共6页
Chinese Journal of Radio Science
关键词
窄带短波信道
信道估计
DDEA信道均衡
码间干扰
LU分解
narrow-band HF channel
channel estimation
DDEA channel equalization
inter-symbol interference
LU decomposition
