Implementation of a smart antenna base station for mobile WiMAX based on OFDMA

  • Authors:

  • Seungheon Hyeon;Changhoon Lee;Chang-eui Shin;Seungwon Choi

  • Affiliations:

  • Department of Electronics and Computer Engineering, Hanyang University, Seongdong-Gu, Seoul, South Korea;Department of Electronics and Computer Engineering, Hanyang University, Seongdong-Gu, Seoul, South Korea;Department of Electronics and Computer Engineering, Hanyang University, Seongdong-Gu, Seoul, South Korea;Department of Electronics and Computer Engineering, Hanyang University, Seongdong-Gu, Seoul, South Korea

  • Venue:
  • EURASIP Journal on Wireless Communications and Networking - Special issue on OFDMA architectures, protocols, and applications
  • Year:
  • 2009

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Abstract

We present an implementation of a mobile-WiMAX (m-WiMAX) base station (BS) that supports smart antenna (SA) functionality. To implement the m-WiMAX SA BS, we must address a number of key issues in baseband signal processing related to symbol-timing acquisition, the beamforming scheme, and accurate calibration. We propose appropriate solutions and implement an m-WiMAX SA BS accordingly. Experimental tests were performed to verify the validity of the solutions. Results showed a 3.5-time (5.5 dB) link-budget enhancement on the uplink compared to a single antenna system. In addition, the experimental results were consistent with the results of the computer simulation.