Energy-efficient relaying

Energy-efficient relaying

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The next generations of wireless cellular communications will deploy flexible heterogeneous architectures including smart relays, femto, and macro base stations [28]. It is expected that 50 billion connected devices will operate by 2020, and that a lot of new services will be implemented including e-health, e-banking, e-learning, and so on. This requires both the data rates to grow by a factor of 1000 and the communication latency to be drastically reduced [8]. These requirements are to be realized with similar or even lower energy consumption as in current wireless communications. Therefore, we need an energy-efficient design of relay-assisted cellular networks.

Chapter Contents:

  • 8.1 Introduction
  • 8.1.1 Energy efficiency
  • 8.1.2 Recent results
  • 8.2 Energy-efficient relay protocol design
  • 8.2.1 Power control and relay design in three-way relay channels
  • 8.3 Energy-efficient power allocation with AF relaying
  • 8.3.1 Centralized power allocation
  • 8.3.2 Distributed power allocation
  • Distributed implementation
  • 8.4 Energy-efficient resource allocation with multiple-antenna AF relaying
  • 8.4.1 Relay interference neutralization
  • Required number of relay antennas
  • 8.4.2 Receive filters allocation
  • 8.4.3 Centralized power allocation
  • 8.4.4 Distributed power allocation
  • 8.5 Multi-stream MIMO AF system
  • 8.6 Numerical results
  • 8.7 Conclusions
  • References

Inspec keywords: telecommunication power management; femtocellular radio; relay networks (telecommunication); energy consumption; energy conservation

Other keywords: femtobase station; macrobase station; flexible heterogeneous architecture deployment; wireless cellular communication; smart relay; relay-assisted cellular network energy-efficient design; lower energy consumption

Subjects: Mobile radio systems

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