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Resource Allocation for Active IRS-Assisted Multiuser Communication Systems


Aug 30, 2021
Dongfang Xu, Xianghao Yu, Derrick Wing Kwan Ng, Robert Schober

* 3 figures, submitted to conference 

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Two-Timescale Design for Reconfigurable Intelligent Surface-Aided Massive MIMO Systems with Imperfect CSI


Aug 18, 2021
Kangda Zhi, Cunhua Pan, Hong Ren, Kezhi Wang, Maged Elkashlan, Marco Di Renzo, Robert Schober, H. Vincent Poor, Jiangzhou Wang, Lajos Hanzo

* 71 pages, submitted to IEEE TIT. Keywords: Reconfigurable Intelligent Surface, Intelligent Reflecting Surface, Massive MIMO, Channel estimation, etc 

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Evolution of NOMA Toward Next Generation Multiple Access (NGMA)


Aug 10, 2021
Yuanwei Liu, Shuowen Zhang, Xidong Mu, Zhiguo Ding, Robert Schober, Naofal Al-Dhahir, Ekram Hossain, Xuemin Shen

* 66 pages, 8 figures, a survey paper submitted to the IEEE JSAC special issue on Next Generation Multiple Access 

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Modeling and Design of IRS-Assisted Multi-Link FSO Systems


Jul 31, 2021
Hedieh Ajam, Marzieh Najafi, Vahid Jamali, Bernhard Schmauss, Robert Schober


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Channel Estimation for IRS-Assisted Millimeter-Wave MIMO Systems: Sparsity-Inspired Approaches


Jul 24, 2021
Tian Lin, Xianghao Yu, Yu Zhu, Robert Schober


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Downlink MIMO-RSMA with Successive Null-Space Precoding


Jul 17, 2021
Aravindh Krishnamoorthy, Robert Schober

* 30 pages, 14 figures, 2 tables. This work is the journal version of arXiv:2101.01147 and has been submitted to the IEEE for possible publication 

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Intelligent Reflecting Surface-assisted Free-space Optical Communications


May 13, 2021
Vahid Jamali, Hedieh Ajam, Marzieh Najafi, Bernhard Schmauss, Robert Schober, H. Vincent Poor


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IRS-Assisted Active Device Detection


May 10, 2021
Friedemann Laue, Vahid Jamali, Robert Schober


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A Survey on Millimeter-Wave Beamforming Enabled UAV Communications and Networking


Apr 19, 2021
Zhenyu Xiao, Lipeng Zhu, Yanming Liu, Pengfei Yi, Rui Zhang, Xiang-Gen Xia, Robert Schober

* Submitted to IEEE Communications Surveys and Tutorials 

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A Novel Wireless Communication Paradigm for Intelligent Reflecting Surface Based Symbiotic Radio Systems


Apr 19, 2021
Meng Hua, Qingqing Wu, Luxi Yang, Robert Schober, H. Vincent Poor

* This manuscript has been submitted to IEEE journal for possible publication 

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Hybrid Relay-Reflecting Intelligent Surface-Aided Wireless Communications: Opportunities, Challenges, and Future Perspectives


Apr 05, 2021
Nhan Thanh Nguyen, Jiguang He, Van-Dinh Nguyen, Henk Wymeersch, Derrick Wing Kwan Ng, Robert Schober, Symeon Chatzinotas, Markku Juntti


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Active RIS vs. Passive RIS: Which Will Prevail in 6G?


Mar 31, 2021
Zijian Zhang, Linglong Dai, Xibi Chen, Changhao Liu, Fan Yang, Robert Schober, H. Vincent Poor

* Unlike the existing passive RIS, active RIS that can actively amplify the reflected signals is proposed to break the fundamental limit of double fading effect of RIS. The new signal model of active RIS is validated through experimental measurements. Measurement data and simulation codes will be provided at: http://oa.ee.tsinghua.edu.cn/dailinglong/publications/publications.html 

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Smart and Reconfigurable Wireless Communications: From IRS Modeling to Algorithm Design


Mar 12, 2021
Xianghao Yu, Vahid Jamali, Dongfang Xu, Derrick Wing Kwan Ng, Robert Schober

* 17 pages, 4 figures, submitted for potential publication 

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Is NOMA Efficient in Multi-Antenna Networks? A Critical Look at Next Generation Multiple Access Techniques


Jan 12, 2021
Bruno Clerckx, Yijie Mao, Robert Schober, Eduard Jorswieck, David J. Love, Jinhong Yuan, Lajos Hanzo, Geoffrey Ye Li, Erik G. Larsson, Giuseppe Caire

* submitted for publication 

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Successive Null-Space Precoder Design for Downlink MU-MIMO with Rate Splitting and Single-Stage SIC


Jan 04, 2021
Aravindh Krishnamoorthy, Robert Schober

* 6pp, 4 figures, to be submitted to the Workshop on Rate-Splitting (Multiple Access) for 6G at the IEEE Intl. Commun. Conf. (ICC) 2021 

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Deep Learning-based Resource Allocation For Device-to-Device Communication


Nov 25, 2020
Woongsup Lee, Robert Schober


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5G-and-Beyond Networks with UAVs: From Communications to Sensing and Intelligence


Oct 19, 2020
Qingqing Wu, Jie Xu, Yong Zeng, Derrick Wing Kwan Ng, Naofal Al-Dhahir, Robert Schober, A. Lee Swindlehurst

* Submitted to IEEE JSAC 

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