Social-Aware User Cooperation in Full-Duplex and Half-Duplex Multi-Antenna Systems

Mojtaba Vaezi, Hazer Inaltekin, Wonjae Shin, H. Vincent Poor, Junshan Zhang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Social and communications networks interact with each other in multifaceted ways, yet these interactions are often considered to be secondary in throughput, privacy and security analysis for communications networks. In this paper, full-duplex (FD) and half-duplex (HD) multi-antenna cooperative communication systems are studied by taking both physical links and social connections into account. An optimal beamformer for maximizing communication rate in the proposed socio-technological setting aims to balance between the direct link and the cooperating link as well as respecting the trust degree between the users. The resulting optimization problems are nontrivial to solve, even numerically, as they are not convex. The complexity of the problems is significantly reduced by showing that a linear combination of the direct and cooperating links’ channel vectors maximizes the achievable rate. Then, a computationally efficient numerical solution is used to maximize the rates both in the FD and HD modes. Numerical results demonstrate that significant gains in communication rates can be obtained with the proposed optimal beamforming design.

Original languageEnglish (US)
JournalIEEE Transactions on Communications
DOIs
StateAccepted/In press - Mar 29 2018

Fingerprint

Telecommunication networks
Antennas
Cooperative communication
Communication
Beamforming
Communication systems
Throughput

Keywords

  • Array signal processing
  • Cooperative communication
  • cooperative communication
  • full-duplex
  • half-duplex
  • High definition video
  • MIMO beamforming
  • MIMO communication
  • Mobile/social networks
  • Optimization
  • Relays
  • Transmitters

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Social-Aware User Cooperation in Full-Duplex and Half-Duplex Multi-Antenna Systems. / Vaezi, Mojtaba; Inaltekin, Hazer; Shin, Wonjae; Poor, H. Vincent; Zhang, Junshan.

In: IEEE Transactions on Communications, 29.03.2018.

Research output: Contribution to journalArticle

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