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Design problems for 5G and beyond

Design problems for 5G and beyond

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This chapter presents design cases for 5G and beyond using EAs. The first design case is multi-objective optimization in 5G massive MIMO wireless networks. The current fifth generation offers extremely wide spectrum and multi-gigabit-per-second data rates for mobile users. The massive multiple input-multiple output (MIMO) concept is one of critical technologies of 5G networks, where each base station (BS) is equipped with a large number of antennas and can provide service to multiple users, over the same time and frequency band. The network designer should take into account different requirements and objectives for the proper operation of 5G wireless networks with massive MIMO. The second design case is joint power allocation and user association in non-orthogonal multiple access networks. Non-orthogonal multiple access (NOMA) techniques are going to have a critical role in 5G mobile networks. If the network resources are assigned to users with poor channel conditions then the current orthogonal multiple access (OMA) networks suffer from low spectrum efficiency. However, the above condition is entirely different in the case of NOMA systems in the power domain. The NOMA scheme allows the users to use the same frequency, time, and code simultaneously, while it allocates different levels of power.

Chapter Contents:

  • 7.1 Multi-objective optimization in 5G massive MIMO wireless networks
  • 7.1.1 System model
  • 7.1.2 Multi-objective evolutionary algorithm-based solution
  • 7.1.3 Proposed optimization framework
  • 7.1.4 Numerical results
  • 7.2 Joint power allocation and user association in non-orthogonal multiple access networks
  • 7.2.1 System model
  • 7.2.2 Problem formulation
  • 7.2.3 Numerical results
  • References

Inspec keywords: telecommunication power management; telecommunication network planning; evolutionary computation; radio spectrum management; 5G mobile communication; resource allocation; MIMO communication; nonorthogonal multiple access

Other keywords: NOMA networks; nonorthogonal multiple access networks; evolutionary algorithms; network resources; spectrum efficiency; multiple input-multiple output; channel conditions; design problems; power allocation; 5G communication; massive MIMO wireless network; user association; multiobjective optimization; network requirements

Subjects: Radio links and equipment; Optimisation techniques; Communication network design, planning and routing; Multiple access communication

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