计算机科学 ›› 2017, Vol. 44 ›› Issue (7): 89-93.doi: 10.11896/j.issn.1002-137X.2017.07.016
周雪倩,吴晓富,余训健
ZHOU Xue-qian, WU Xiao-fu and YU Xun-jian
摘要： 从信道纠错编码的角度来探讨认知无线电寄生认证信道的容量。首先,通过推导认证信道的对数似然比,给出了其简化计算方式,分析与仿真结果表明:简化计算与严格计算结果相仿,因而认证信道可等效为二元输入的加性高斯白噪声(BI-AWGN)信道。其次,基于对数似然比的简化形式,通过置信度传播迭代译码,考察了融入LDPC纠错机制的认证信道实际传输性能,仿真结果表明:实际简化译码的结果与理想BI-AWGN的译码性能无法区分。最终得出研究结论:认知无线电寄生认证信道可严格等效为BI-AWGN信道,因而可采用BI-AWGN信道设计的纠错编码来有效逼近寄生认证信道的传输极限。
| [1] STOTAS S,NALLANATHAN A.Enhancing the Capacity of Spectrum Sharing Cognitive Radio Networks [J].IEEE Tran-sactions on Vehicular Technology,2011,60(8):3768-3779. [2] ZHAO C D,XIE L,JIANG X Y,et al.A PHY-layer Authentication Approach for Transmitter Identification in Cognitive Radio Networks[C]∥2010 International Conference on Communications and Mobile Computing (CMC).2010:154-158. [3] SHU Z H,QIAN Y,CI S.On physical layer security for cognitive radio networks [J].IEEE Network,2013,27(3):28-33. [4] SHANNON C E.Probability of error for optimal codes in a Gaussian channel [J].Bell System Technical Journal,1959,38(3):611-656. [5] ZOU Y L,WANG X B,SHEN W M.Physical-Layer Security with Multiuser Scheduling in Cognitive Radio Networks [J].IEEE Transactions on Communications,2013,61(12):5103-5113. [6] SAKRAN H,SHOKAIR M,NASR O,et al.Proposed relay selection scheme for physical layer security in cognitive radio networks [J].IET Communications,2012,6(16):2676-2687. [7] TAN X,BORLE K,DU W,et al.Cryptographic link signatures for spectrum usage authentication in cognitive radio [C]∥Proc.2011 ACM WiSec.2011:79-90. [8] JIANG T,ZENG H,YAN Q,et al.On the limitation of embedding cryptographic signature for primary transmitter authentication [J].IEEE Wireless Communication Letter,2012,1(4):324-327. [9] BORLE K M,CHEN B,DU W K.Physical Layer Spectrum Usa-ge Authentication in Cognitive Radio:Analysis and Implementation [J].IEEE Transaction Inference Forensics Security,2015,10(10):2225-2235. [10] IDA A,FUJII T.Physical layer security using multi-band transmission considering channel selection for cognitive radio networks [C]∥Signal and Information Processing Association,Annual Summit and Conference(APSIPA).2014:1-5. [11] ZOU Y L,ZHU J,YANG L Q,et al.Securing physical-layercommunications for cognitive radio networks [J].IEEE Communications,2015,53(9):48-54. [12] CEPHELI O,KURT G K.Physical layer security in cognitive radio networks:A beamforming approach [C]∥First International Black Sea Conference Communications and Networking(BlackSeaCom).2013:233-237. |
| No related articles found! |
|
||
首页