LTE Physical Layer Implementation Based on GPP Multi-core Parallel Processing and USRP Platform

被引:0
作者
Chen, Zhiping [1 ]
Wu, Jun [1 ]
机构
[1] Tongji Univ, Coll Elect & Informat Engn, Shanghai 201804, Peoples R China
来源
2014 9TH INTERNATIONAL CONFERENCE ON COMMUNICATIONS AND NETWORKING IN CHINA (CHINACOM) | 2014年
关键词
LTE; multi-core; USRP; SDR; Inter-threads communication;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Software defined radio (SDR) is characterized by its flexibility and convenience of modification, because significant amounts of signal processing are handed over to the general-purpose processor (GPP), rather than being done in specialpurpose hardware. In the long term, software-defined radios work well in low data transmission rate systems such as 2G/3G cellular systems and other wireless radio systems. With rapid development of GPP power, more complex algorithms and higher data rate wireless communication systems can be implemented with GPP processor and general purpose RF front end. In this paper we propose a LTE physical layer parallel system architecture based on multicore GPP to match up the high capacity requests of LTE air interface. Firstly, we analyzed the complexity of each LTE physical layer module and made a statistics of their processing time. And then we used Linux CPU affinity to allocate each LTE module to particular CPU core carefully based on the statistics. CPU utilization rate shows that using multi-core makes the system to have enough capacity. Our system can only match up 2M bandwidth when the LTE physical layer procedures are running on single CPU core, while it can match up 5M bandwidth when it's running on multi-core.
引用
收藏
页码:197 / 201
页数:5
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