Now showing 1 - 4 of 4
  • Publication
    Performance analysis of coordinated multi-point (CoMP) with energy trading and management in green cloud RAN
    Traditional cellular network architectures are facing considerable issues as a result of tremendous rise in high-power consumption, limited frequency accessibility, and wireless data traffic. Given that both research groups and industry are continually searching for fundamental breakthroughs in the creation of new network architectures that may fulfil expanding consumer demand while minimizing network operators' operating and capital expenses. In order to achieve these needs, many creative areas are being investigated for potential inclusion in new radio access networks, with Coordinated Multi-Point (CoMP) being one of the most researched alternatives. This study analyzes the CoMP technique and its performance in dealing with interference in cloud radio access networks (C-RAN) to address the issue. This study's analysis analyzed two distinct situations. Scenario 1 evaluates the effectiveness of CoMP C-RAN to traditional techniques, whereas scenario 2 assesses system performance as the number of users grows. The proposed network architecture is proven by numerical findings, which show that CoMP C-RAN outperforms the typical cellular network.
      2  54
  • Publication
    Optimization of Beamforming Matrix Design for Multi-Cell MIMO with SWIPT Systems
    Energy harvesting is emerging as a promising new solution to provide continuous energy supplies to wireless rechargeable devices. This paper investigates wireless information and energy transfer in multi-cell multiple-input-multiple-output (MIMO) systems. An optimisation problem that designs the beamforming matrix is introduced to maximise the sum of total harvested energy collected from all energy receiving terminals while guaranteeing the desired data rate for each information receiving terminal remains above a certain level. Total power constraint at each transmitting terminal that was generated from the renewable energy and purchased from the grid is also considered. The channel capacity that requires the use of slower and less reliable CVX's successive approximation heuristic is formulated, and then, the non-convex problem is transformed into a convex problem form modelled by a semidefinite relaxation (SDR). The results show the effectiveness of the multiple antennas used in all cells provide better performance and also maximise the total harvested energy at all energy receiving terminals.
      5  57
  • Publication
    Recent research on energy trading
    (IOP Publishing, 2020)
    Lyana Izzati binti Mohd Asri
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    Breakthroughs in the smart grid and promotion of “green communication” have encouraged wireless communication network to harness the local environment’s resources and to function economic and ecological benefits in an energy-efficient manner. This paper presents a comtemporary review of recent advancement of energy trading including renewable energy sources, types of energy trading and the advantages of having energy trading.
      2  8
  • Publication
    SWIPT in Rician MIMO Interference Channels with Spatial Antenna Correlation
    In this paper, we investigate simultaneous wireless information and power transfer (SWIPT) under spatial correlation in multiuser multiple-input-multiple-output (MU-MIMO) fading channels where the line-of-sight (LOS) path between the transmitter and the receiver is present. While the energy receiving terminals are harvesting energy, the information receiving terminals are receiving their desired signal-to-interference-plus-noise ratio (SINR) under the total power constraint at the transmitting terminal of the proposed SWIPT system. We use the Kronecker model to study the impact of MIMO antenna correlation and the Rician K-factor as the main parameter to set up the different fading conditions. We use semi-definite programming (SDP) to formulate the proposed SWIPT system. Our numerical results confirm that the performance of the proposed design improves in the absence of LOS component, i.e., with a zero K-factor or pure Rayleigh fading channel, and deteriorates as the LOS channel component grows. We show that the total harvested energy monotonically decreases as the Rician K-factor increases.
      5  51