Journal of Korea Society of Digital Industry and Information Management (디지털산업정보학회논문지)

Korea Society of Digital Industry and Information Management (디지털산업정보학회)
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Implementation of LTE uplink System for SDR Platform using CUDA and UHD

CUDA와 UHD를 이용한 SDR 플랫폼 용 LTE 상향링크 시스템 구현

  • 안치영 (한양대학교 전자컴퓨터통신공학과 통신신호처리연구실) ;
  • 김용 (한양대학교 전자컴퓨터통신공학과 통신신호처리연구실) ;
  • 최승원 (한양대학교 융합전자공학부)
  • Published : 2013.06.30
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Abstract

In this paper, we present an implementation of Long Term Evolution (LTE) Uplink (UL) system on a Software Defined Radio (SDR) platform using a conventional Personal Computer (PC), which adopts Graphic Processing Units (GPU) and Universal Software Radio Peripheral2 (USRP2) with URSP Hardware Driver (UHD) for SDR software modem and Radio Frequency (RF) transceiver, respectively. We have adopted UHD because UHD provides flexibility in the design of transceiver chain. Also, Cognitive Radio (CR) engine have been implemented by using libraries from UHD. Meanwhile, we have implemented the software modem in our system on GPU which is suitable for parallel computing due to its powerful Arithmetic and Logic Units (ALUs). From our experiment tests, we have measured the total processing time for a single frame of both transmit and receive LTE UL data to find that it takes about 5.00ms and 6.78ms for transmit and receive, respectively. It particularly means that the implemented system is capable of real-time processing of all the baseband signal processing algorithms required for LTE UL system.

Keywords

References

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