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- [21] Differential modal gain reduction of L-band 5-spatial mode EDFA with depressed core structure2016 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC), 2016,Wada, Masaki论文数: 0 引用数: 0 h-index: 0机构: NTT Corp, NTT Access Network Serv Syst Labs, 1-7-1 Hanabatake, Tsukuba, Ibaraki 3050805, Japan NTT Corp, NTT Access Network Serv Syst Labs, 1-7-1 Hanabatake, Tsukuba, Ibaraki 3050805, JapanSakamoto, Taiji论文数: 0 引用数: 0 h-index: 0机构: NTT Corp, NTT Access Network Serv Syst Labs, 1-7-1 Hanabatake, Tsukuba, Ibaraki 3050805, Japan NTT Corp, NTT Access Network Serv Syst Labs, 1-7-1 Hanabatake, Tsukuba, Ibaraki 3050805, JapanAozasa, Shinichi论文数: 0 引用数: 0 h-index: 0机构: NTT Corp, NTT Access Network Serv Syst Labs, 1-7-1 Hanabatake, Tsukuba, Ibaraki 3050805, Japan NTT Corp, NTT Access Network Serv Syst Labs, 1-7-1 Hanabatake, Tsukuba, Ibaraki 3050805, JapanMori, Takayoshi论文数: 0 引用数: 0 h-index: 0机构: NTT Corp, NTT Access Network Serv Syst Labs, 1-7-1 Hanabatake, Tsukuba, Ibaraki 3050805, Japan NTT Corp, NTT Access Network Serv Syst Labs, 1-7-1 Hanabatake, Tsukuba, Ibaraki 3050805, JapanYamamoto, Takashi论文数: 0 引用数: 0 h-index: 0机构: NTT Corp, NTT Access Network Serv Syst Labs, 1-7-1 Hanabatake, Tsukuba, Ibaraki 3050805, Japan NTT Corp, NTT Access Network Serv Syst Labs, 1-7-1 Hanabatake, Tsukuba, Ibaraki 3050805, JapanNakajima, Kazuhide论文数: 0 引用数: 0 h-index: 0机构: NTT Corp, NTT Access Network Serv Syst Labs, 1-7-1 Hanabatake, Tsukuba, Ibaraki 3050805, Japan NTT Corp, NTT Access Network Serv Syst Labs, 1-7-1 Hanabatake, Tsukuba, Ibaraki 3050805, Japan
- [22] Few Mode Ring-Core Fibre Amplifier for Low Differential Modal Gain43RD EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION (ECOC 2017), 2017,Jung, Y.论文数: 0 引用数: 0 h-index: 0机构: Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, EnglandKang, Q.论文数: 0 引用数: 0 h-index: 0机构: Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, EnglandShen, L.论文数: 0 引用数: 0 h-index: 0机构: Yangtze Opt Fiber & Cable Joint Stock Ltd Co, State Key Lab Opt Fiber & Cable Manufacture Techn, Wuhan, Hubei, Peoples R China Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, EnglandChen, S.论文数: 0 引用数: 0 h-index: 0机构: Yangtze Opt Fiber & Cable Joint Stock Ltd Co, State Key Lab Opt Fiber & Cable Manufacture Techn, Wuhan, Hubei, Peoples R China Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, EnglandWang, H.论文数: 0 引用数: 0 h-index: 0机构: Yangtze Opt Fiber & Cable Joint Stock Ltd Co, State Key Lab Opt Fiber & Cable Manufacture Techn, Wuhan, Hubei, Peoples R China Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, EnglandYang, Y.论文数: 0 引用数: 0 h-index: 0机构: Yangtze Opt Fiber & Cable Joint Stock Ltd Co, State Key Lab Opt Fiber & Cable Manufacture Techn, Wuhan, Hubei, Peoples R China Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, EnglandShi, K.论文数: 0 引用数: 0 h-index: 0机构: UCL, Dept Elect & Elect Engn, London WC1E 7JE, England Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, EnglandThomsen, B. C.论文数: 0 引用数: 0 h-index: 0机构: UCL, Dept Elect & Elect Engn, London WC1E 7JE, England Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, EnglandCorrea, R. Amezcua论文数: 0 引用数: 0 h-index: 0机构: Univ Cent Florida, Coll & Opt & Photon, CREOL, Orlando, FL 32816 USA Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, EnglandEznaveh, Z. Sanjabi论文数: 0 引用数: 0 h-index: 0机构: Univ Cent Florida, Coll & Opt & Photon, CREOL, Orlando, FL 32816 USA Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, EnglandZacarias, J. Carlos Alvarado论文数: 0 引用数: 0 h-index: 0机构: Univ Cent Florida, Coll & Opt & Photon, CREOL, Orlando, FL 32816 USA Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, EnglandAntonio-Lopez, J.论文数: 0 引用数: 0 h-index: 0机构: Univ Cent Florida, Coll & Opt & Photon, CREOL, Orlando, FL 32816 USA Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, EnglandBarua, P.论文数: 0 引用数: 0 h-index: 0机构: Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, EnglandSahu, J. K.论文数: 0 引用数: 0 h-index: 0机构: Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, EnglandAlam, S. U.论文数: 0 引用数: 0 h-index: 0机构: Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, EnglandRichardson, D. J.论文数: 0 引用数: 0 h-index: 0机构: Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England
- [23] The gain equalization of six-mode signals by few-mode bismuth-doped fiber amplifier operating in O-bandOPTICAL FIBER TECHNOLOGY, 2022, 69Wang, Dingchen论文数: 0 引用数: 0 h-index: 0机构: Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R China Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R ChinaPei, Li论文数: 0 引用数: 0 h-index: 0机构: Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R China Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R ChinaZheng, Jingjing论文数: 0 引用数: 0 h-index: 0机构: Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R China Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R ChinaXu, Wenxuan论文数: 0 引用数: 0 h-index: 0机构: Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R China Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R ChinaWang, Jianshuai论文数: 0 引用数: 0 h-index: 0机构: Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R China Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R ChinaNing, Tigang论文数: 0 引用数: 0 h-index: 0机构: Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R China Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R ChinaLi, Jing论文数: 0 引用数: 0 h-index: 0机构: Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R China Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R ChinaHe, Kai论文数: 0 引用数: 0 h-index: 0机构: Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R China Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R China
- [24] Design of An Improved Radially Single-Mode and Azimuthally Multimode Ring-Core Fiber for Mode-Division Multiplexing Systems2018 ASIA COMMUNICATIONS AND PHOTONICS CONFERENCE (ACP), 2018,Han, Jiawei论文数: 0 引用数: 0 h-index: 0机构: Tianjin Normal Univ, Tianjin Key Lab Wireless Mobile Commun & Power Tr, Tianjin, Peoples R China Tianjin Normal Univ, Tianjin Key Lab Wireless Mobile Commun & Power Tr, Tianjin, Peoples R ChinaLi, Yupeng论文数: 0 引用数: 0 h-index: 0机构: Tianjin Normal Univ, Tianjin Key Lab Wireless Mobile Commun & Power Tr, Tianjin, Peoples R China Tianjin Normal Univ, Tianjin Key Lab Wireless Mobile Commun & Power Tr, Tianjin, Peoples R ChinaZhang, Jie论文数: 0 引用数: 0 h-index: 0机构: Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing, Peoples R China Tianjin Normal Univ, Tianjin Key Lab Wireless Mobile Commun & Power Tr, Tianjin, Peoples R China
- [25] Differential Modal Gain Reduction of L-band 5-Mode EDFA Using EDF With Center Depressed Core IndexJOURNAL OF LIGHTWAVE TECHNOLOGY, 2017, 35 (04) : 762 - 767Wada, Masaki论文数: 0 引用数: 0 h-index: 0机构: NTT Corp, NTT Access Network Serv Syst Labs, Tsukuba, Ibaraki 3050805, Japan NTT Corp, NTT Access Network Serv Syst Labs, Tsukuba, Ibaraki 3050805, JapanSakamoto, Taiji论文数: 0 引用数: 0 h-index: 0机构: NTT Corp, NTT Access Network Serv Syst Labs, Tsukuba, Ibaraki 3050805, Japan NTT Corp, NTT Access Network Serv Syst Labs, Tsukuba, Ibaraki 3050805, JapanAozasa, Shinichi论文数: 0 引用数: 0 h-index: 0机构: NTT Corp, NTT Access Network Serv Syst Labs, Tsukuba, Ibaraki 3050805, Japan NTT Corp, NTT Access Network Serv Syst Labs, Tsukuba, Ibaraki 3050805, JapanMori, Takayoshi论文数: 0 引用数: 0 h-index: 0机构: NTT Corp, NTT Access Network Serv Syst Labs, Tsukuba, Ibaraki 3050805, Japan NTT Corp, NTT Access Network Serv Syst Labs, Tsukuba, Ibaraki 3050805, JapanYamamoto, Takashi论文数: 0 引用数: 0 h-index: 0机构: NTT Corp, NTT Access Network Serv Syst Labs, Tsukuba, Ibaraki 3050805, Japan NTT Corp, NTT Access Network Serv Syst Labs, Tsukuba, Ibaraki 3050805, JapanNakajima, Kazuhide论文数: 0 引用数: 0 h-index: 0机构: NTT Corp, NTT Access Network Serv Syst Labs, Tsukuba, Ibaraki 3050805, Japan NTT Corp, NTT Access Network Serv Syst Labs, Tsukuba, Ibaraki 3050805, Japan
- [26] Vortex Fiber Amplifier with Ultra-low Differential Mode Gain Based on Ring Core FiberFaguang Xuebao/Chinese Journal of Luminescence, 2020, 41 (01): : 55 - 62Gu H.论文数: 0 引用数: 0 h-index: 0机构: Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, Beijing Institute of Lightwave Technology, Beijing Jiaotong University, Beijing Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, BeijingTang M.论文数: 0 引用数: 0 h-index: 0机构: Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, Beijing Institute of Lightwave Technology, Beijing Jiaotong University, Beijing Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, BeijingCao M.论文数: 0 引用数: 0 h-index: 0机构: Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, Beijing Institute of Lightwave Technology, Beijing Jiaotong University, Beijing Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, BeijingMi Y.-A.论文数: 0 引用数: 0 h-index: 0机构: Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, Beijing Institute of Lightwave Technology, Beijing Jiaotong University, Beijing Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, BeijingTao H.论文数: 0 引用数: 0 h-index: 0机构: Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, Beijing Institute of Lightwave Technology, Beijing Jiaotong University, Beijing Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, BeijingLi X.-J.论文数: 0 引用数: 0 h-index: 0机构: Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, Beijing Institute of Lightwave Technology, Beijing Jiaotong University, Beijing Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, BeijingRen W.-H.论文数: 0 引用数: 0 h-index: 0机构: Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, Beijing Institute of Lightwave Technology, Beijing Jiaotong University, Beijing Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, BeijingJian W.论文数: 0 引用数: 0 h-index: 0机构: Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, Beijing Institute of Lightwave Technology, Beijing Jiaotong University, Beijing Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, BeijingRen G.-B.论文数: 0 引用数: 0 h-index: 0机构: Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, Beijing Institute of Lightwave Technology, Beijing Jiaotong University, Beijing Key Laboratory of All Optical Network & Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, Beijing
- [27] Experimental Characterization of a Ring-Profile Few-Mode Erbium-Doped Fiber Amplifier enabling Gain Equalization2013 OPTICAL FIBER COMMUNICATION CONFERENCE AND EXPOSITION AND THE NATIONAL FIBER OPTIC ENGINEERS CONFERENCE (OFC/NFOEC), 2013,Ip, Ezra论文数: 0 引用数: 0 h-index: 0机构: NEC Labs Amer, Princeton, NJ 08540 USA NEC Labs Amer, Princeton, NJ 08540 USALi, Ming-Jun论文数: 0 引用数: 0 h-index: 0机构: NEC Labs Amer, Princeton, NJ 08540 USA NEC Labs Amer, Princeton, NJ 08540 USABennett, Kevin论文数: 0 引用数: 0 h-index: 0机构: NEC Labs Amer, Princeton, NJ 08540 USA NEC Labs Amer, Princeton, NJ 08540 USAKorolev, Andrey论文数: 0 引用数: 0 h-index: 0机构: NEC Labs Amer, Princeton, NJ 08540 USA NEC Labs Amer, Princeton, NJ 08540 USAKoreshkov, Konstantin论文数: 0 引用数: 0 h-index: 0机构: NEC Labs Amer, Princeton, NJ 08540 USA NEC Labs Amer, Princeton, NJ 08540 USAWood, William论文数: 0 引用数: 0 h-index: 0机构: NEC Labs Amer, Princeton, NJ 08540 USA NEC Labs Amer, Princeton, NJ 08540 USAMontero, Carlos论文数: 0 引用数: 0 h-index: 0机构: NEC Labs Amer, Princeton, NJ 08540 USA NEC Labs Amer, Princeton, NJ 08540 USALinares, Jesus论文数: 0 引用数: 0 h-index: 0机构: NEC Labs Amer, Princeton, NJ 08540 USA NEC Labs Amer, Princeton, NJ 08540 USA
- [28] Design trade-offs and optimization of radially single-mode and azimuthally multimode ring-core fibers for mode-division multiplexing systemsOPTICS EXPRESS, 2019, 27 (08) : 11844 - 11861Han, Jiawei论文数: 0 引用数: 0 h-index: 0机构: Tianjin Normal Univ, Tianjin Key Lab Wireless Mobile Commun & Power Tr, Tianjin 300387, Peoples R China Tianjin Normal Univ, Tianjin Key Lab Wireless Mobile Commun & Power Tr, Tianjin 300387, Peoples R ChinaGao, Guanjun论文数: 0 引用数: 0 h-index: 0机构: Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China Tianjin Normal Univ, Tianjin Key Lab Wireless Mobile Commun & Power Tr, Tianjin 300387, Peoples R ChinaZhao, Yongli论文数: 0 引用数: 0 h-index: 0机构: Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China Tianjin Normal Univ, Tianjin Key Lab Wireless Mobile Commun & Power Tr, Tianjin 300387, Peoples R ChinaHou, Shanglin论文数: 0 引用数: 0 h-index: 0机构: Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Gansu, Peoples R China Tianjin Normal Univ, Tianjin Key Lab Wireless Mobile Commun & Power Tr, Tianjin 300387, Peoples R China
- [29] A Fan Ring Resonator Antenna For Generating High Gain PSOAM Mode-Group With Ultrahigh Equivalent Order2021 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS WORKSHOPS (ICC WORKSHOPS), 2021,Zhu, Zelin论文数: 0 引用数: 0 h-index: 0机构: Zhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou, Peoples R China Zhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou, Peoples R ChinaXiong, Xiaowen论文数: 0 引用数: 0 h-index: 0机构: Zhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou, Peoples R China Zhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou, Peoples R ChinaChen, Yuqi论文数: 0 引用数: 0 h-index: 0机构: Zhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou, Peoples R China Zhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou, Peoples R ChinaZheng, Shilie论文数: 0 引用数: 0 h-index: 0机构: Zhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou, Peoples R China Zhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou, Peoples R ChinaZhang, Xianmin论文数: 0 引用数: 0 h-index: 0机构: Zhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou, Peoples R China Zhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou, Peoples R China
- [30] Design of a side-hole-assisted weakly coupled rectangular ring-core multimode fiber for mode-division-multiplexing networksAPPLIED OPTICS, 2021, 60 (24) : 7406 - 7420Zhang, Jinyu论文数: 0 引用数: 0 h-index: 0机构: Univ Sci & Technol Beijing, Sch Comp & Commun Engn, Beijing 100083, Peoples R China Univ Sci & Technol Beijing, Sch Comp & Commun Engn, Beijing 100083, Peoples R ChinaRen, Fang论文数: 0 引用数: 0 h-index: 0机构: Univ Sci & Technol Beijing, Sch Comp & Commun Engn, Beijing 100083, Peoples R China Univ Sci & Technol Beijing, Beijing Engn & Technol Res Ctr Convergence Networ, Beijing 100083, Peoples R China Univ Sci & Technol Beijing, Sch Comp & Commun Engn, Beijing 100083, Peoples R ChinaZhang, Yiying论文数: 0 引用数: 0 h-index: 0机构: Univ Sci & Technol Beijing, Sch Comp & Commun Engn, Beijing 100083, Peoples R China Univ Sci & Technol Beijing, Sch Comp & Commun Engn, Beijing 100083, Peoples R ChinaNiu, Jingjing论文数: 0 引用数: 0 h-index: 0机构: Univ Sci & Technol Beijing, Sch Comp & Commun Engn, Beijing 100083, Peoples R China Univ Sci & Technol Beijing, Sch Comp & Commun Engn, Beijing 100083, Peoples R ChinaLei, Xiao论文数: 0 引用数: 0 h-index: 0机构: Univ Sci & Technol Beijing, Sch Comp & Commun Engn, Beijing 100083, Peoples R China Univ Sci & Technol Beijing, Sch Comp & Commun Engn, Beijing 100083, Peoples R ChinaZhang, Yanfei论文数: 0 引用数: 0 h-index: 0机构: Univ Sci & Technol Beijing, Sch Comp & Commun Engn, Beijing 100083, Peoples R China Univ Sci & Technol Beijing, Sch Comp & Commun Engn, Beijing 100083, Peoples R ChinaWang, Jianping论文数: 0 引用数: 0 h-index: 0机构: Univ Sci & Technol Beijing, Sch Comp & Commun Engn, Beijing 100083, Peoples R China Univ Sci & Technol Beijing, Beijing Engn & Technol Res Ctr Convergence Networ, Beijing 100083, Peoples R China Univ Sci & Technol Beijing, Sch Comp & Commun Engn, Beijing 100083, Peoples R China