基于DSP的低功耗接收机单边带解调方法  

Low Power Receiver Single Sideband Demodulation Based on DSP

作　　者：张铭敏[1] 张立国[1] 李相军[1] 

机构地区：[1]东南大学,江苏南京210096

出　　处：《现代电子技术》2006年第17期42-43,46,共3页Modern Electronics Technique

基　　金：军用短波通信低功耗数字接收机;资金资助来自清华同方下属713设计所

摘　　要：为了满足未来战争的发展要求,加快军事现代化的进程,我军正在提高军用通信设备的普及程度。这种新型的低功耗数字接收机将装配到班一级。与传统接收机相比他的特点是体积更小、重量更轻、功耗更低、成本更低、性能更好。主要介绍了该接收机中对单边带信号的解调的两种方法,一种是直接对感兴趣的信号进行带通滤波,另一种是先将感兴趣的信号搬移至零中频处,然后进行低通滤波,最后再搬回原中频处。经过分析比较,后者就运算开销而言优于前者。Our army is popularizing the military communication devices all over the army, to meet the need of the development of the future war and to accelerate the process of military modernization. All of the squads will be equipped with this new low power digital receivers. Compared with the traditional receiver, it＇s smaller, lighter, cheaper, supplied with lower power and it performances better. This paper presents tow methods of SSB demodulation in the receiver,in one method the signal of interest is band-pass filtered,in the other method frequency of the signal of interest is first moved to zero intermediate, then low-pass filtered,at last moved to original intermediate. After analysis and comparison,it＇s concluded that the laterr method costs less operations than the first.

关 键 词：DSP接收机 单边带解调 低通滤波 

分 类 号：TN773[电子电信—电路与系统]