On the Optimization of Real Time Performance of Software Defined Radio on Linux OS


With the evolution of the communication standards, Software Defined Radio (SDR) is faced with an increasingly important problem to balance more and more complex wireless communication algorithms against relatively limited processing capability of hardware. And, the competition for computing resources exacerbates the problem and increases time-delay of SDR system. This paper presents an integrated optimization method for the real-time performance of SDR on Linux OS (operating system). The method is composed of three parts: real-time scheduling policy which ensures higher priority for SDR tasks, CGROUPS used to manage and redistribute the computing resources, and fine-grade system timer which makes the process preemption more accurate. According to the experiments, the round-trip data transfer latency decreases low enough to meet the requirement for TD-SCDMA via the application of the method.

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Wang, Z. , Xiao, L. , Su, X. , Qi, X. and Xu, X. (2013) On the Optimization of Real Time Performance of Software Defined Radio on Linux OS. Communications and Network, 5, 292-297. doi: 10.4236/cn.2013.53B2054.

Conflicts of Interest

The authors declare no conflicts of interest.


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