摘要
在短波通信中,为了克服信道中的多径干扰、衰落和多普勒频移等对接收信号的影响,实现低信噪比下,信号高速传输,文章提出了一种基于压缩感知的短波多天线分集合并接收系统设计方法。该系统有效地将OFDM调制方式和压缩感知相结合,充分利用了OFDM调制方式频谱效率高、抗多径衰落能力强等优势以及压缩感知抗干扰能力强、能以低采样率高精度重建待测信号的特性。实验结果表明:与现有的短波通信系统相比,在信号受强噪声干扰且高速传输的情况下,重建性能最优。
In the shortwave communication,in order to overcome the influence of receipt signal such as the multipath interference,decline and doppler frequency shift and so on in the channel,and realize high signal speed transmission under low SNR,diversity combination receiving system design method based on short wave antenna of compression perception was presented this paper.The system had some features such as high frequency spectrum efficiency,strong anti-jamming abilityand high precision with a low sampling rate by combining OFDM modulation mode with compression perception.The experimental results showed that the existing shortwave communication system has an optimal reconstruction performance in noise jamming and high-speed transmission.
出处
《大众科技》
2012年第4期82-83,88,共3页
Popular Science & Technology
基金
广西无线宽带通信与信号处理重点实验室基金(PF11056X
PF11054X)
关键词
短波通信
多径干扰
压缩感知
分集合并
Shortwave communication
Multipath interference
Compression perception
Diversity combination
