IEEE Photonics Journal (Jan 2014)

2 <formula formulatype="inline"><tex Notation="TeX">$\times$</tex></formula> 2 MIMO OFDM-RoF System Employing LMS-Based Equalizer With I/Q Imbalance Compensation at 60 GHz

  • Hou-Tzu Huang,
  • Po-Tsung Shih,
  • Chun-Ting Lin,
  • Yu-Hsuan Cheng,
  • Wan-Ling Liang,
  • Chun-Hung Ho,
  • Chia-Chien Wei,
  • Anthony Ng'oma

DOI
https://doi.org/10.1109/JPHOT.2014.2310222
Journal volume & issue
Vol. 6, no. 3
pp. 1 – 7

Abstract

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Multiple-input-multiple-output (MIMO) technology is a promising method to increase spectral efficiency in wireless communications. In this paper, a 60-GHz orthogonal frequency-division multiplexing radio over fiber (OFDM-RoF) system employing 2 × 2 MIMO wireless technology is demonstrated. With the proposed equalizer employing least mean squares (LMS) algorithm, MIMO channel mixing and I/Q-mismatch can be compensated simultaneously. 16-QAM and 32-QAM OFDM signal transmissions under forward error correction (FEC) threshold ( 1×10-3) are demonstrated. A data rate of 76.3 Gb/s can be achieved with a bit-loading algorithm over 25-km fiber transmission and 3.5-m wireless transmission.

Keywords