Abstract
In this article, we consider a single-antenna orthogonal frequency division multiplexing-based multihop relaying system over frequency selective fading channels employing subcarrier grouping and linear constellation precoding at the source, and linear detection at the destination. We derive closed-form expressions of the diversity-multiplexing tradeoff relation, and propose the optimal precoder design and symbol loading strategy to achieve the optimal diversity performance. Simulation results are presented to verify our theoretical analysis.
Highlights
Multihop relaying communication is well known for being a cost-effective approach to improving the energy efficiency of communication systems in the case of long source–destination distance [1,2,3]
(1) We derive closed-form expression of the diversity-multiplexing tradeoff (DMT) performance for an orthogonal frequency division multiplexing (OFDM)-based multihop relaying system employing linear constellation precoding at the source node and linear ZF or MMSE detection at the destination node
DMT analysis we study the DMT relation of an OFDMbased multihop relaying system over frequency selective fading channels, which employs subcarrier grouping and linear constellation precoding at the source and linear ZF or MMSE detection at the destination
Summary
Multihop relaying communication is well known for being a cost-effective approach to improving the energy efficiency of communication systems in the case of long source–destination distance [1,2,3].
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