Analog Integrated Circuits and Signal Processing

, Volume 73, Issue 2, pp 569–582

Implementation of an SDR system using an MPI-based GPU cluster for WiMAX and LTE

  • Chiyoung Ahn
  • Saehee Bang
  • Hyohan Kim
  • Seunghak Lee
  • June Kim
  • Seungwon Choi
  • John Glossner
Article

DOI: 10.1007/s10470-012-9941-5

Cite this article as:
Ahn, C., Bang, S., Kim, H. et al. Analog Integr Circ Sig Process (2012) 73: 569. doi:10.1007/s10470-012-9941-5

Abstract

This paper presents an implementation of a 2 × 2 Multi-Input Multi-Output Software Defined Radio (SDR) Base Station system using a Message Passing Interface (MPI)-based Graphic Processing Unit (GPU) cluster as its modem processor for a high-speed data processing. Recently, GPUs have been widely researched especially for SDR systems because of their capability for exploiting parallel processing using a large number of Arithmetic Logic Units. MPI-based GPU clusters have been adopted in order to further increase performance capability. From our experimental results, it has been found that the implemented system consisting of three GPU nodes can enhance the modem speed by more than 2.5 times compared to a single GPU system. A dual-mode Mobile Device (MD) prototype supporting Worldwide Interoperability for Microwave Access and Long Term Evolution communications systems is implemented. In our design, one of the two waveforms can automatically be selected by the MD itself using a dual-mode controller that determines the reconfiguration of the MD modem depending on the received signal quality.

Keywords

SDR MPI GPU WiMAX LTE MIMO 

Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  • Chiyoung Ahn
    • 1
  • Saehee Bang
    • 1
  • Hyohan Kim
    • 1
  • Seunghak Lee
    • 1
  • June Kim
    • 1
  • Seungwon Choi
    • 1
  • John Glossner
    • 2
  1. 1.Department of Electronics and Computer EngineeringHanyang UniversitySeoulKorea
  2. 2.Optimum Semiconductor Technologies, Inc.TarrytownUSA

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