Modulation Design for MIMO-CoMP HARQ

Wenhao Wu, Hans Mittelmann, Zhi DIng

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Abstract

Modulation diversity (MoDiv) is a simple and practical transmission enhancement technique that utilizes different modulation mappings to reduce packet loss rate and achieve higher link throughput. MoDiv is particularly meaningful and effective in Hybrid-Automatic Repeat reQuest (HARQ) systems. We study the deployment and optimization of MoDiv for HARQ in a MIMO-coordinated multi-point scenario under Rician fading channel to mitigate packet loss. We formulate the design optimization of MoDiv into a quadratic 3-D assignment problem, then solve it using a modified iterated local search method. Numerical results demonstrate clear performance gain over simple retransmissions and over a heuristic design under fading channels.

Original languageEnglish
Article number7593297
Pages (from-to)290-293
Number of pages4
JournalIEEE Communications Letters
Volume21
Issue number2
DOIs
Publication statusPublished - Feb 2017
Externally publishedYes

Keywords

  • CoMP
  • HARQ
  • MIMO
  • MoDiv
  • Q3AP

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Wu, W., Mittelmann, H., & DIng, Z. (2017). Modulation Design for MIMO-CoMP HARQ. IEEE Communications Letters, 21(2), 290-293. Article 7593297. https://doi.org/10.1109/LCOMM.2016.2618796