lte系統(tǒng)物理層加密關(guān)鍵技術(shù)設(shè)計(jì)與實(shí)現(xiàn)

1、 學(xué)號(hào)： 學(xué)號(hào)：20113225 20113225LTE 系統(tǒng)物理層加密關(guān)鍵技術(shù)設(shè)計(jì)與實(shí)現(xiàn)Design and implementation of encryption key technology of the physical layer LTE system系 別： 通信工程系專 業(yè)： 通信工程班 級(jí)： 2 班學(xué)生姓名： 賀海洋指導(dǎo)教師：

2、許萍、張昕然 副教授、助教日 期： 2015 年 3 月至 2015 年 6 月AbstractBroadband wireless communication is a booster of information society development, which is changing the way people live. In recent years, with the rapid development of

3、 information technology, mobile communications technology on a global scale has been rapid development and application of a variety of new wireless communication concept endless variety of new system and its key technolo

4、gy advances. Since the orthogonal frequency division multiplexing （OFDM) technology and efficient use of spectrum resources effectively combat frequency selective fading, multiple input multiple output （MIMO) using a pl

5、urality of antennas to achieve multiple overcharged, without increasing bandwidth and transmission power case, it can exponentially increase channel capacity, so OFDM-MIMO technology is widely considered Beyond Third Gen

6、eration in mobile communication system （B3G) key technology is a hot area of today's mobile communications research. Faced with the growing mobile communication system of high data bandwidth and security requirements

7、, LTE systems introduce key technologies such as OFDM and MIMO. LTE physical layer encryption key for the encryption algorithm core technology combined with OFDM modulation, the traditional cryptography encryption algori

8、thms compared to its better air port data protection. Meanwhile, LTE physical layer encryption key technology and the combination of OFDM modulation signal is encrypted, compared to traditional cryptography encryption al

9、gorithm to encrypt data transmitted symbol rate is far below the data transfer rate.Designed and implemented a LTE physical layer of point to point encryption key technical solutions, constellation mapping and constellat

10、ion rotation through key control for generating LTE physical layer signal is encrypted, so that illegal recipients, without knowing the key case cannot correctly demodulate LTE physical layer signal, signal encryption fu