User Order Chunk Allocation using Priority in OFDMA Systems

Multi carrier system is expected to be able to offer high data rate, to support a large number of users and to ensure the fulfillment of quality of service (QOS) requirements. The demand of subscribers on data services with the explosive development of traffic such as Internet, video interactive, email, gaming, and so forth from users, and additional future in 4G LTE technology. To support these subscriber demands and promising QOS, in multi carrier system, scheduling algorithm priority scheme which consists of three main processes of scheduling, radio resources management, packet scheduling and priority schemes is implemented. The combination of User Order algorithm and QoS Class Identifier (QCI) Order using weighting factor for user priority with Promethee method to group and evaluate the users will be done for all user in each Time Trigger Interval (TTI). Measurements of total average spectral efficiency and fairness for each number of users in the normal and overload condition resulted in the improvement of fairness index has more 8 percents than previous algorithm. When cell radius become wider, the sum average of spectral efficiency and average fairness becomes lower. The sum average of spectral efficiency decreasing very fast on deviation lognormal shadowing below than 3 dB, and going slowly after 3 dB. It has same time complexity O(KC) with previous algorithm, using asymptotic time complexity approach. This test is done for bandwidth system 5 MHz and 300 Subcarriers and distance of user to e-NodeB distributed in 1 km cell radius