Power Allocation and Relay Selection in Relay Networks: A Perturbation-Based Approach

Keshav Singh, Meng Lin Ku, Jia Chin Lin

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

A perturbation-based power allocation and multirelay selection approach is proposed for multiple-input multiple-output relay networks in multipath fading channels. In this approach, the relays are partitioned into two groups according to Lagrangian multipliers of power constraints. The power allocation for the relays is perturbed by increasing the power for the potential relay's group, while decreasing the power of the relays in the other group. An optimization framework is then formulated as a tradeoff between the relay selection and the mean square error performance degradation. Computer simulations are used to demonstrate the performance.

Original languageEnglish
Article number7970125
Pages (from-to)1328-1332
Number of pages5
JournalIEEE Signal Processing Letters
Volume24
Issue number9
DOIs
StatePublished - Sep 2017

Keywords

  • Power allocation
  • relay networks
  • relay selection

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