PERFORMANCE ENHANCEMENT OF LTE NETWORK SYSTEM FUNCTIONALITIES USING MIXED SENSITIVITY CONTROL

Long Term Evolution (LTE) networks have problems with Transmission Control Protocol (TCP) low speed implementation. There is a need for adequate compensation in the data transfer function to achieve improved performance. In the work, Mixed Sensitivity control and PID Control techniques were adopted and compared to evaluate network performance on weighted parameters. It was observed that by using three adjustable weighting functions� , � ��� � to develop a compensator by using mixsyn command, a robust compensator was developed, the � � � damping time measures 0.000407s, and 0.000425s for first and second experiment. The LTE network improvement was also carried out using PID control technique with three control functions� , � ��� � , this measures a damping time � � � of 550s and 520s. from the result of the damping time, the Mixsyn recorded a lower time while the PID recorded a much higher time. The work recommends that: TCP based LTE network performance improvement using mixed sensitivity synthesis should be applied in the current LTE networks in order to achieve faster data packet transfer. This work also achieved the application of an adequate compensator that improved the performance and stability characteristics of the LTE Network system functionalities.