-
摘要:
针对同时收发认知抗干扰（SCAJ）系统中IQ通道失衡产生的镜像干扰降低网电空间数据链（CDL）抗干扰能力的问题，研究了IQ通道失衡的单/多频带SCAJ接收机干扰感知性能，推导出基于能量检测的IQ通道失衡接收机干扰检测概率和虚警概率，并据此提出了删除镜像信道干扰信号的有效方法。仿真结果表明，IQ通道失衡产生的镜像干扰降低了SCAJ接收机的检测概率，提出的镜像信道干扰信号删除方法可以减小IQ通道失衡的不利影响，从而提高数据链SCAJ系统性能。
-
关键词:
- 网电空间数据链 (CDL) /
- IQ失衡 /
- 同时收发 /
- 认知抗干扰 /
- 镜像干扰
Abstract:To enhance the anti-jamming capability of cyberspace data-link (CDL) in the complex electromagnetic environment, we explore the problem of the image interference caused by IQ channel imbalance in simultaneous transmit and receive based cognitive anti-jamming (SCAJ) system. The interference sensing of single-and multi-channel SCAJ system impaired by IQ channel imbalance is investigated, and energy detection based detection and false alarm probabilities in closed-form for SCAJ system are derived. Simulation results show that the detection probability of the SCAJ receiver is decreased by IQ channel imbalance, and the proposed interference cancellation scheme can reduce the adverse effect of IQ imbalance.
-
图 2 单频带SCAJ接收机的干扰检测概率
Figure 2. Jamming detection probability for single-channel SCAJ receiver
图 3 多频带SCAJ接收机的干扰检测概率
Figure 3. Jamming detection probability for multi-channel SCAJ receiver
-
[1] DJOUMESSI E E, TATU S O, WU K.Frequency-agile dualband direct conversion receiver for cognitive radio systems[J].IEEE Transactions on Microwave Theory and Techniques, 2010, 58(1):87-94. doi: 10.1109/TMTT.2009.2035952 [2] RAZAVI B.Cognitive radio design challenges and techniques[J].IEEE Journal of Solid-State Circuits, 2010, 45(8):1542-1553. doi: 10.1109/JSSC.2010.2049790 [3] ZENG Y, LIANG Y C, HOANG A T, et al.A review on spectrum sensing for cognitive radio:Challenges and solutions[J].EURASIP Journal on Advances in Signal Proccessing, 2010, 2010:1-15. https://www.researchgate.net/publication/40892098_A_Review_on_Spectrum_Sensing_for_Cognitive_Radio_Challenges_and_Solutions [4] ZHENG F, QIAN Y M, LI H T.On the performance of full duplex cognitive anti-jamming receiver impaired by phase noise[C]//2015 IEEE International Conference on Signal Processing, Communications and Computing.Piscataway, NJ:IEEE Press, 2015:1-5. [5] VERLANT-CHENET J, RENARD J, DRICOT J, et al.Sensitivity of spectrum sensing techniques to RF impairments[C]//2010 IEEE 71st Vehicular Technology Conference.Piscataway, NJ:IEEE Press, 2010:1-5. [6] ELSAMADOUNY A, GOMAA A, AL-DHAHIR N.Likelihood-based spectrum sensing of OFDM signals in the presence of TX/RX I/Q imbalance[C]//2012 IEEE Global Communications Conference.Piscataway, NJ:IEEE Press, 2012:3616-3621. [7] SEMIARI O, MAHAM B, YUEN C.Effect of IQ imbalance on blinds spectrum sensing for OFDMA overlay cognitive radio[C]//2012 1st IEEE International Conference on Communications in China.Piscataway, NJ:IEEE Press, 2012:433-437. [8] GOKCEOGLU A, DIKMESE S, VALKAMA M, et al.Energy detection under IQ imbalance with single-and multi-channel direct-conversion receiver:Analysis and mitigation[J].IEEE Journal on Selected Areas in Communications, 2014, 32(3):411-424. doi: 10.1109/JSAC.2014.1403001 [9] GOKCEOGLU A, DIKMESE S, VALKAMA M, et al.Analysis and mitigation of RF IQ imbalance in eigenvalue based multichannel spectrum sensing[C]//2013 IEEE 24th International Symposium on Personal Indoor and Mobile Radio Communications.Piscataway, NJ:IEEE Press, 2013:734-739. [10] GOKCEOGLU A, DIKMESE S, VALKAMA M, et al.Enhanced energy detection for multi-band spectrum sensing under RF imperfections[C]//2013 8th International Conference on Cognitive Radio Oriented Wireless Netwroks.Piscataway, NJ:IEEE Press, 2013:55-60. [11] KORPI D, ANTTILA L, SYRJALA V, et al.Widely-linear digital self-interference cancellation in direct-conversion full-duplex transceiver[C]//IEEE Proceedings on Communications in China.Piscataway, NJ:IEEE Press, 2012:433-437. [12] AHMED E, ELTAWIL A M.All-digital self-interference cancellation technique for full-duplex systems[J].IEEE Transactions on Wireless Communications, 2015, 14(7):3519-3532. doi: 10.1109/TWC.2015.2407876 [13] FITZ M P, HALFORD T R, HOSSAIN I, et al.Towards simultaneous radar and spectral sensing[C]//IEEE International Symposium on Dynamic Spectrum Access Networks:SSPARC Workshop.Piscataway, NJ:IEEE Press, 2014:15-19. [14] KOLODZIEJ K E, PERRY B T, HERD J S.Simultaneous transmit and receive (STAR) system architecture using multiple analog cancellation layers[C]//2015 IEEE MTT-S International Microwave Symposium.Piscataway, NJ:IEEE Press, 2015. [15] ENSERINK S, FITZ M P, GU C Y, et al.Joint analog and digital interference cancellation[C]//2014 IEEE International Symposium on Dynamic Spectrum Access Networks.Piscataway, NJ:IEEE Press, 2014:378-379. [16] 黎海涛, 钱一名.网电空间数据链的认知抗干扰技术[J].航空学报, 2016, 37(11):3476-3484. http://www.cnki.com.cn/Article/CJFDTOTAL-HKXB201611025.htmLI H T, QIAN Y M.Simultaneous transmit and receive based cognitive anti-jamming for cyberspace data-link[J].Acta Aeronautica et Astronautica Sinica, 2016, 37(11):3476-3484(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-HKXB201611025.htm -
下载:
点击查看大图
计量
- 文章访问数: 967
- HTML全文浏览量: 70
- PDF下载量: 550
- 被引次数: 0
