摘要
综合考虑软件无线电体系架构和自适应DBF,介绍了一种利用多径分集的接收机实现方案。分析了系统的相关模型和结构,重点阐述了平坦衰落和频率选择性衰落下,自适应DBF实现多径分集的方法,并分析了相关性能。仿真结果证实了通过DBF的空间信号处理,可以实现传统波束合成分集和新增的多径分集,提高系统性能。
A wireless receiver with multipath diversity is proposed when taking the SDR and DBF simultaneously. The relevant system model and structure are argued. Especially, the implementation of DBF algorithm which employs the multipath diversity is stated in details in the cases of fading and frequency selective fading channels respectively. Furthermore, the paper depicts the performance of channel capacity and bit error rate. Through the simulations, it illustrates that the spacial signal processing could attain the traditional beamforming gain and multipath diversity gain at the same time, which guarantees the improvement in system performance.
出处
《电子技术应用》
北大核心
2011年第3期110-113,共4页
Application of Electronic Technique
基金
国家自然科学基金60872038
重庆市自然科学基金(2008BB2310)
关键词
数字波束合成
软件无线电
分集
衰落
digital beamforming
software defined radio
diversity
fading
