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- ДокументFormulating 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.
- ДокументImproving 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.
- ДокументModel 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.
- ДокументResults 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.