An efficient symbol-level combining scheme for MIMO systems with hybrid ARQ

  • Authors:

  • Edward W. Jang;Jungwon Lee;Leilei Song;John M. Cioffi

  • Affiliations:

  • Department of Electrical Engineering, Stanford University, Stanford, CA;Marvell Semiconductor, Inc., Santa Clara, CA;Marvell Semiconductor, Inc., Santa Clara, CA;Department of Electrical Engineering, Stanford University, Stanford, CA

  • Venue:
  • IEEE Transactions on Wireless Communications
  • Year:
  • 2009

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Abstract

This paper proposes a new combining scheme for multiple-input multiple-output (MIMO) systems with hybrid automatic-repeat-request (HARQ). The proposed combining scheme is proved to have the optimal decoding performance. Furthermore, the proposed combining scheme is shown to have low memory requirement and reduced complexity compared to other optimal combining schemes. Simulation results under IEEE 802.16e setting with UMTS channel models verify that the proposed combining scheme achieves the optimal decoding performance and performs much better than other suboptimal combining schemes.