一种基于异构多核DSP的IEEE 802.11a接收端基带处理的研究和实现  

Research and implementation of IEEE 802.11a receiver baseband processing based on heterogeneous multi-core DSP

作　　者：徐力[1] 王沁[1] 史少波[1] 

机构地区：[1]北京科技大学计算机与通信工程学院,北京100083

出　　处：《计算机应用研究》2012年第1期241-245,共5页Application Research of Computers

基　　金：国家"863"计划资助项目(2008AA01Z134);国家自然科学基金资助项目(61172049;61173150;61003251);高等学校博士点科研基金资助项目(20100006110015);北京市教育委员会科研基地共建项目

摘　　要：现有基于异构多核DSP的IEEE 802.11a接收端实现方法中DSP核空闲等待时间较长,不能充分体现多核DSP的高性能计算能力。结合多核DSP的特点,通过核内细粒度流水和核间粗粒度流水的方法,来提高多核DSP的执行效率,并在目标异构多核DSP上实现完整的IEEE 802.11a接收端基带处理。实验结果表明,该方法不仅能满足系统吞吐量和实时性,与类似工作相比还能保证较高的DSP核平均利用率。Nowdays,the DSP core waiting time is longer in some IEEE 802.11a implementations based on multi-core DSP,which can not take full advantage of its high-performace computational capabilities.This paper combined the characteristics of multi-core DSP,using coarse-grained pipeline between DSP cores and fine-grained pipeline in single DSP core to enhance execution efficiency of multi-core DSP.It implemented on target heterogeneous mutli-core DSP with a complete IEEE 802.11a receiver baseband processing.The experiment show that this method not only guarantee the system throughput and real-time,but also improved the DSP core average utilization compared similar works.

关 键 词：IEEE802.11A 异构多核DSP 软件无线电 接收端基带处理 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]