Soft MIMO ML demodulation based on bitwise constellation partitioning

  • Authors:
  • Jungwon Lee;Ji-Woong Choi;Hui-Ling Lou;Jongsun Park

  • Affiliations:
  • Marvell Semiconductor, Santa Clara, CA;Marvell Semiconductor, Santa Clara, CA;Marvell Semiconductor, Santa Clara, CA;School of Electrical Engineering, Korea University, Seoul, Korea

  • Venue:
  • IEEE Communications Letters
  • Year:
  • 2009

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Abstract

In this letter, we propose a soft-decoding ML MIMO demodulation method that lowers the complexity of the existing ML method. The proposed method finds the nearest point without calculating the Euclidean distance by exploiting the regular structure of bit-to-symbol mapping. It enables significant reduction of the number of distance calculations which is a major complexity burden.