Physical layer security using stream cipher for LTE

In today´s mobile world where entire system is going wireless, security is big time concern. When data is transmitted through various wireless devices secure transfer of data is momentous. A heterogeneous network demands security from attacks with immense speed. In heterogeneous network where different protocols are used to convert the data from one device to another, it is important that all security conversion should have high speed. In this multi-user environment call dropping should not take place. In order to maintain speed it is important that the security codes have a great data rate. The various channel attacks and multi path nature of code makes it vulnerable to attack. The acute exchange of time and frequency parameters makes the physical layer elements liable to security related attacks. Signal protection at the physical layer is significant in LTE system. Stream cipher is a symmetric cipher which can be used for cryptographic protection in wireless system. Stream ciphers are faster than block cipher hence they can have higher data-rates which is liable for LTE system. This paper proposes a physical layer security system using stream cipher in LTE for better speed and security.