上行SC-FDMA协作通信系统中联合SFBC编码的物理层加密传输方案
A New SFBC Combined Physical Layer Transmission Scheme for LPI and High Throughput in the Cooperative SC-FDMA System

DOI: 10.12677/HJWC.2016.62009, PP. 61-71

Keywords: LPI，协作通信，SFBC，SC-FDMA，加密
LPI, Cooperative Transmission, SFBC, SC-FDMA, Encryption

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Abstract:

当前协作通信的多样性和安全性已成为越来越重要的问题。在本论文中，为了在上行SC-FDMA (单载波频分多址)协作通信系统中达到低截获概率(LPI)，低误比特率和高吞吐量的目的，我们提出了一种新的联合SFBC编码的物理层加密传输方案，将SFBC编码联合用于物理层加密算法，并接着与自适应编码调制相结合。运用我们新提出的联合SFBC编码的物理层加密传输方案，无论是RN还是窃听者都不能从发射机(UT)获取任何有用信息。实验结果表明，联合SFBC编码的物理层加密传输方案可以进一步提高信息传输的安全性，得到很好的保密速率，并且进一步提高系统的传输性能和吞吐量。
In recent days, cooperative diversity and communication security become important research issues for wireless communications. In this paper, to achieve LPI (low probability of interception) and high throughput in the cooperative SC-FDMA (Single-Carrier Frequency Division Multiple Access) system, a new SFBC combined physical layer transmission scheme is proposed, where, a new SFBC combined encryption algorithm is applied, adaptive modulation based on CSI (channel state information) is further considered. By doing so, neither relay node nor eavesdropper intercepts the information signals transmitted from UT (user terminal). Simulation results show above new SFBC combined physical layer transmission scheme can bring in higher transmission safety and secrecy rate, further derive better transmission performance and transmission throughput.

References

[1]	Zheng, K., Peng, Y.-X., Long, H. and Liu, G.Y. (2010) Cooperative Communication and Its Application in the LTE- Advanced. 127-146.
[2]	Wyner, A.D. (1975) The Wire-Tap Channel. The Bell System Technical Journal, 54, 1355-1387. http://dx.doi.org/10.1002/j.1538-7305.1975.tb02040.x
[3]	Leung-Yan-Cheong, S.K. and Hellman, M.E. (1978) The Gaussian Wire Tap Channel. IEEE Transactions on Information Theory, 24, 451-456. http://dx.doi.org/10.1109/TIT.1978.1055917
[4]	Csiszár, I. and K？rner, J. (1978) Broadcast Channels with Con？dential Messages. IEEE Transactions on Information Theory, 24, 339-348. http://dx.doi.org/10.1109/TIT.1978.1055892
[5]	Li, X., Wu, J.H. and Ratazzi, E.P. (2006) Array Redundancy and Diversity for Wireless Transmissions with Low Probability of Interception. Proceedings IEEE ICASSP, 4.
[6]	Li, X., Wu, J.H. and Ratazzi, E.P. (2007) Using Antenna Array Redundancy and Channel Diversity for Secure Wireless Transmissions. Journal of Communications, 2, 24-32.
[7]	Li, Z. and Xia, X.-G. (2009) A Distributed Differentially Encoded OFDM Scheme for Asynchronous Cooperative Systems with Low Probability of Interception. IEEE Transac-tions on Wireless Communications, 8, 3372-3379.
[8]	Li, Z. and Xia, X.-G. (2008) A Distributed Differentially Space-Time-Frequency Coded OFDM for Asynchronous Cooperative Systems with Low Probability of Interception. IEEE GLOBECOM Global Telecommunications Conference, 1-5. http://dx.doi.org/10.1109/GLOCOM.2008.ECP.232

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