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Investigating and Allocating Resources Efficiently in Cell-Free Networks

Feyzi, Zahra | 2024

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 58518 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Hadi, Mohammad; Pakravan, Mohammad Reza
  7. Abstract:
  8. With the advancement of technology and the increase in the scope and complexity of data communication networks due to the growth of the number of users and the volume of traffic, the need to increase the speed and quality of access for exchanging information at any point in the network is increasing day by day. In this regard, cell-free networks (CF) with a different architecture compared to traditional cellular networks have been introduced, which have advantages such as improving the total user rate, complete network coverage, and solving cell edge problems. In this type of network, a large number of access points (AP) serve users (UE) through AC connection on the traditional mobile radio spectrum. Also, the access points exchange information through FH to the CPU, which is the signal processing center. In order to emigrate from traditional cellular networks to cell-free networks, a large number of access points with simple hardware should be added to the current networks and the system and data transmission model should be updated according to the definitions of cell-free networks. In this regard, in our research, we study a cell-free network consisting of two types of access points with simple and complex hardware, each of which uses its own unique transmission method; the CFE method for access points with simple hardware and the ECF method for access points with complex hardware. After calculating the user rate in the described network, we optimize the power factors and also examine the network from a cost-performance perspective. Simulation results demonstrate that power coefficient optimization has a great impact on improving system performance, resulting in a typical 2 fold improvement in the average sum rate
  9. Keywords:
  10. Resources Allocation ; Hardware Implementation ; Achievable Rate Region ; Fronthaul Capacity ; Limited Capacity Front-haul ; Cell-Free Networks ; Central Processing Unit

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