Перегляд за автором "Al-Janabi H. D."

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  • Зображення мініатюри
    Публікація
    Adaptive control signal parameters in LTE technology with MIMO
    (Проблеми телекомунікацій, 2012) Loshakov, V. A.; Al-Janabi H. D.; Al-Zayadi H. K.
    In this paper are considering ability of increasing the LTE performance by using the adaptation CQI feedback. The Block Error Rate of the Channel Quality Indicator performance has to be investigated depending on different configuration of MIMO.
  • Зображення мініатюри
    Публікація
    Formulating and Solving Problem of Priority Subchannel Allocation in Downlink WiMAX
    (2016) Al-Janabi H. D.; Al-Janabi H. D.; Hojayev O. M.
    Model of priority subchannel allocation in downlink WiMAX presented. Model based on solution the optimization problem associated with maximizing the lower weighted level allocated bandwidth for each subscriber station according to its QoS requirements for access rate and priority. Numerical research of proposed model confirmed the adequacy and effectiveness of solutions as a whole in terms of providing different types of service level to subscriber stations depending on the priority.
  • Зображення мініатюри
    Публікація
    Improving transmission rate in WIMAX technology downlink
    (ХНУРЭ, 2013) Al-Janabi H. D.
    In this article presents mathematical model of sub-channels distribution in networks with standard IEEE 802.16, which provides a guaran-teed rate of user stations in downlink. Using various kinds of objective functions in offered model is directed to allocation of minimum data rate transmission of every user station. A comparative analysis of obtained solutions by using different objec tive functions was conducted.
  • Зображення мініатюри
    Публікація
    Model guaranteed transmission rate providing in WiMAX downlink
    (Проблеми телекомунікацій, 2013) Al-Janabi H. D.; Al-Dulaimi A. M.; Abed A. H.
    Found that the provision of the required transmission rate of WiMAX can be achieved by solving the problem of frequency resource allocation in the downlink. As a result analyzed by the existing mechanisms of the frequency distribution of resources between subscriber stations in a downlink wireless network, operating using the technology of WiMAX. Based on the identified drawbacks of making a mathematical model the distribution of sub-channels in the network standard, IEEE 802.16, which provides a guaranteed rate subscriber stations in the downlink and submitted by a number of linear constraint equations. The novelty of the model lies in the formulation of the problem the frequency distribution of the resource allocation problem as a sub-channel with a firmly fixed number of subcarriers in each of them. The solution to the optimization problem sub-channel allocation proposed to carry out a multiple objective functions that the available frequency resources in order to allocate a minimum number of sub-channels, the distribution of the available frequency resources in order to allocate a minimum transfer speed of each the subscriber stations, the distribution of the available frequency resources to jointly minimize the number of used sub-channels and a transmission rate allocated to subscriber stations in a downlink. A comparative analysis of the solutions obtained by using different objective functions.
  • Зображення мініатюри
    Публікація
    Model to improve required qualities of transmission rate in wimax technology downlink
    (НУ ЛП, 2013) Al-Janabi H. D.; Al-Dulaimi A. M.; Abed A. H.
    The given work presents mathematical model of sub-channels distribution using various kinds of objective functions in offered model is directed to allocation of minimum data rate transmission of every user station. Subcarrier frequency is primary building block of OFDM method that using to distribute sub-channel for users as in this work used submode OFDMA FUSC Full Usage of Subcarriers, the element of frequency resources, called the sub-channel.
  • Зображення мініатюри
    Публікація
    Results of Development of Model for Bandwidth Management in LTE Downlink with Resource Allocation Type 1
    (2015) Garkusha, S.; Al-Dulaimi A. M.; Al-Janabi H. D.
    The results of development of the mathematical model for time-frequency resource allocation in the downlink of the LTE technology using the Resource Allocation Type 1 are given. The proposed model is aimed at provision of the guaranteed quality of service for wireless network users by allocating the required downlink bandwidth to user equipment. The analysis of the proposed model for time-frequency resource allocation in the LTE technology from the viewpoint of providing the required bandwidths for user equipment in the downlink was conducted.
  • Зображення мініатюри
    Публікація
    Using of LTE technology in wireless sensor networks
    (ХНУРЭ, 2013) Al-Janabi H. D.; Hussain, Y. T.
    The ability to use the LTE technology for improving the characteristics quality of wireless-sensor networks is considered. The potential energy saving in wireless, sensor networks based on the.LTE technology with MIMO is analyzed. The energy efficiency is compared pver different transmission distances. The main attention is paid to the possibility of using the LTE hardware for designing higher energy efficiency wireless sensor networks .