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- 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.
- ДокументThe service quality model of LTE technology downlink(ХНУРЭ, 2013) Al-Dulaimi A. M.Presents a mathematical model of resource blocks distribution in LTE technology downlink. Offered model aims at providing guaranteed quality of service wireless users by user stations allocating of required transmission rates. Comparative analysis of obtained solutions by using different objective functions. Using various kinds of objective functions in of fered model is directed to resource blocks allocation of minimum downlink or a minimum data transmission rate of each user station. It was found the greatest savings of time frequency resource allows objective function aimed at minimizing number of used resource blocks. The mod el offered in classes of service CoS corresponds to Class B each providing each user station a guaranteed transmission rate, with access to additional (non-guaranteed) bandwidth. Keywords: LTE; mathematical model, required rate, objective function, resource block.