Research Article
Software-Defined Radio Based On Cortex-A9
@INPROCEEDINGS{10.1109/ChinaCom.2012.6417585, author={Xin Wei and Xin Qi and Limin Xiao and Zhiyuan Shi and Lianfen Huang}, title={Software-Defined Radio Based On Cortex-A9}, proceedings={First International Workshop on C-RAN}, publisher={IEEE}, proceedings_a={C-RAN}, year={2013}, month={2}, keywords={sdr; xenomai; cortex-a9; soft demodulation; neon}, doi={10.1109/ChinaCom.2012.6417585} }- Xin Wei
Xin Qi
Limin Xiao
Zhiyuan Shi
Lianfen Huang
Year: 2013
Software-Defined Radio Based On Cortex-A9
C-RAN
IEEE
DOI: 10.1109/ChinaCom.2012.6417585
Abstract
This paper presents an implementation of Software-defined Radio (SDR) system over ARM Cortex-A9 processor. Compared with conventionally used general purpose CPU, e.g. X86 CPU, ARM processors have advantages in both price and power consumption under the same computing capability. Two basic issues of SDR over ARM are investigated: the real-time operation and signal processing efficiency. For the former issue, we select the Linux-based real-time operating system Xenomai, which is built on Cortex-A9 platform. Testing results show that the performance of Xenomai on Cortex-A9 meets the real-time requirement of SDR. Furthermore, the NEON technology of Cortex-A9 is used to optimize the complex signal processing algorithms in communication systems. Soft Demodulation is taken as an example for the optimization, and the experimental results are provided to show the improvement of signal processing efficiency.
