Journal of Advanced Information Technology and Convergence (한국정보기술학회 영문논문지)

Korean Institute of Information Technology (한국정보기술학회)
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ODFM-Based Adaptive Channel Estimation Algorithms for IEEE 802.11ad WLAN

  • Nguyen-Thi, My-Kieu (Dept. of Electronics and Radio Engineering, Kyung Hee University) ;
  • Kim, Jinsang (Dept. of Electronics and Radio Engineering, Kyung Hee University) ;
  • Lee, Seungjoo (Dept. of Digital Electronics Hyejeon University)
  • Received : 2016.06.25
  • Accepted : 2016.07.15
  • Published : 2016.07.31
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Abstract

This paper proposes an adaptive channel estimation scheme for OFDM-based IEEE 802.11ad wireless local area network (WLAN). The standard supports two types of information of OFDM packets for estimating the communication channels, which are the channel estimation field (CEF) of preamble and pilot subcarriers. The CEF-based channel estimation provides better BER (bit error rate) performance at slow fading channel state, whereas the pilot-based channel estimation is good at fast fading channel state. Hence, a combined channel estimation method is introduced to improve the performance. The prediction of the channel state to select the proper channel estimation method is required. In this work, an adaptive channel estimation scheme is also proposed to improve the performance of channel estimation (CE). Basing on a channel quality indicator (CQI), the proper channel estimation method corresponding to the channel type is decided.

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Acknowledgement

This work was supported by Industrial Strategic Technology Development Program (10044092, Transceiver for 60GHz Wireless LAN/PAN) funded by the Ministry of Knowledge Economy (MKE, Korea)