期刊
ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING
卷 69, 期 2-3, 页码 107-117出版社
SPRINGER
DOI: 10.1007/s10470-011-9764-9
关键词
SDR; GPU; CUDA; WiMAX; MIMO
资金
- Seoul RBD Program [PA090743]
Conventional communication systems have been implemented using digital signal processors (DSPs) and/or field programmable gate arrays (FPGAs), especially for software defined radio (SDR) functionality. We propose a scheme that uses a graphics processing unit (GPU) in place of the conventional DSPs or FPGAs for the implementation of an SDR-based communication system. The GPU, a high-speed parallel processor with multiple arithmetic logic units, is adopted for the signal processing of the physical layer required for the parallel processing in an SDR system. The compute unified device architecture (CUDA) based on the C language provides a software development kit (SDK) for the modem application of the GPU. Therefore we utilize the CUDA SDK to implement the real-time modem function. This paper presents an implementation of a 2 x 2 multiple-input multiple-output (MIMO) WiMAX system employing a GPU as the realtime modem. By installing a radio frequency module on top of the GPU modem, we implement a real-time transmission system for video data. The performance of the proposed GPU-based system is demonstrated by comparing its operation time against that of the conventional DSP-based system.
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