Al-Sharify M. Methods and models of information channels throughput increasing in cellular networks based on LTE technology

The thesis is devoted to the problem of increasing LTE radio-frequency channel throughput and throughput available to the subscriber terminal. This is achieved by improving the efficiency of complex MIMO antenna systems using beamforming mechanism and based on the proposed method of resource allocation within the LTE cell. We have determined the necessary parameters of service quality on data link layer using the mutual information method. Also we have calculated SNR, BER, and packet error rate. It should be 10-20% higher signal / noise ratio at the mobile terminal receiver input outdoors to assure the same level of bit error rate. The analysis has showed the modulation schemes provide rate value close to the values calculated using the Shannon formula, but did not exceed them. The most effective results to provide necessary throughput in LTE technology can be achieved by solving the problem of frequency and time resources allocation in the downlink. Using beamforming we achieved 30-60% higher throughput in the radio channel LTE in average. The proposed method of allocating resource blocks that considers the proportional allocation of throughput between the subscriber terminals assures raise the throughput balancing from 10 to 100 times compare to the method of maximizing the total throughput provided in LTE cell by performance decreasing by 40-50 %. This method provides optimum relation between LTE cells performance and degree of downlink throughput balancing in communication channel. We carried out recommendations on how to improve the capacity of the physical layer of a wireless LTE network based on the results of our research.