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 WCDMA Air Protocol Analyzer with An Effective Equalizer Design using Characteristic of Sparse Matrix

희소 행렬의 특성을 이용하여 효율적인 등화기 설계법이 적용된 WCDMA 무선 신호 분석기 구현

  • 신창의 (한양대학교 전자컴퓨터통신공학과 통신신호처리연구실) ;
  • 최승원 (한양대학교 전자컴퓨터통신공학과)
  • Published : 2013.03.30
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Abstract

This paper presents implementation of Air protocol analyzer and physical layer design algorithm. The analyzer is a measurement system providing real-time analysis of wireless signals between User Equipment (UE) and Node-B. The implemented system proposed in this paper consists of Digital Signal Processors (DSPs) and Field Programmable Gate Arrays (FPGAs). The waveform of Wideband Code Division Multiple Access (WCDMA) has been selected for verification of the proposed system. We designed the analyzer using equalizer algorithm and rake-receiver algorithm. Among various algorithms of designing the equalizer, we have chosen Linear Minimum Mean Square Error (LMMSE) equalizer that uses the inverse of channel matrix. Since the LMMSE equalizer uses the inverse channel matrix, it suffers from a large amount of computational load, while it outperforms most conventional equalizers. In this paper, we introduce an efficient procedure of reducing the computational load required by LMMSE equalizer-based receiver.

Keywords

References

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