Security Enhancement for Data Transmission in 4G Networks

This paper, presents the design and evaluation of security enhancement for data transmission in 4G networks. An enhanced encryption method with AES algorithm is used here. To increase the complexity of the system, AES is used in Round structure and Enhancement is done by modifying the S-box. The static S-box is made dynamic using cipher key and the performance is kept close to the traditional algorithm. The inverse S-box is also modified accordingly. 4G simulation model is developed by using AWGN channel and BPSK modulator/demodulator. Comparison is made between AES and the enhanced system on the basis of performance evaluation based on Runtime and Throughput. Data rate achieved by the enhanced system is around 0.6 Mbps which is compatible with LTE.