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Modulation Design for MIMO-CoMP HARQ

Wenhao Wu(wenhaowu1989***at***hotmail.com)
Hans Mittelmann(mittelmann***at***asu.edu)
Zhi Ding(zding***at***ucdavis.edu)

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-ARQ (HARQ) systems. We study the deployment and optimization of MoDiv for HARQ in a MIMOcoordinated multi-point (MIMO-CoMP) scenario under Rician fading channel to mitigate packet loss. We formulate the design optimization of MoDiv into a quadratic three-dimensional assignment problem (Q3AP), then solve it using a modified iterated local search (ILS) method. Numerical results demonstrate clear performance gain over simple retransmissions and over a heuristic design under fading channels.

Keywords: MoDiv, MIMO, CoMP, HARQ, Q3AP

Category 1: Applications -- Science and Engineering

Category 2: Combinatorial Optimization (Other )


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Entry Submitted: 10/14/2016
Entry Accepted: 10/14/2016
Entry Last Modified: 10/14/2016

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