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Improving BER Performance of IEEE 802.15.4 with Alamouti Scheme in MIMO System

MIMO 시스템에서 ALAMOUTI 기법과 IEEE 802.15.4의 BER 성능 개선

  • Received : 2012.10.18
  • Accepted : 2013.01.18
  • Published : 2013.02.28

Abstract

This paper proposes a technique for applying space-time block coding (STBC) - Alamouti scheme on Multiple Inputs Multiple Output (MIMO) system based on IEEE 802.15.4 standard. It is applied to IEEE 802.15.4 standard in $2{\times}1$ MISO and $2{\times}2$ MIMO systems. Simulation is performed using Matlab and the results are compared with conventional IEEE 802.15.4 approaches, Single Input Single Output (SISO) system and switching diversity $1{\times}2$ Single Input Multiple Output (SIMO) system. The simulations show that applied Alamouti scheme gave better Bit Error Rate (BER) performance compared to combined IEEE 802.15.4 with switching diversity and SISO system.

본 논문은 IEEE 802.15.4 표준 기반의 Multiple Inputs Multiple Output (MIMO) 시스템에 space-time block coding (STBC) - Alamouti scheme을 적용하는 기법을 제안한다. 제안된 기법은 IEEE 802.15.4 표준을 기반으로 하는 $2{\times}1$ MISO와 $2{\times}2$ MIMO에 적용되었다. Matlab을 이용한 모의 실험을 수행하였고, 그 결과를 기존의 IEEE 802.15.4 Single Input Single Output (SISO) system과 switching diversity $1{\times}2$ Single Input Multiple Output (SIMO)와 비교하였다. 모의 실험 결과 제안된 기법은 IEEE 802.15.4 SISO 및 switching diversity 방식에 비해 더 나은 Bit Error Rate (Ber) 성능을 보이는 것을 입증하였다.

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