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A New View of Multi-User Hybrid Massive MIMO: Non-Orthogonal Angle Division Multiple Access [article]

Hai Lin, Feifei Gao, Shi Jin, Geoffrey Ye Li
2017 arXiv   pre-print
The former can be formulated by steering vectors and the latter has the same size as the number of RF chains, which perfectly matches the structure of hybrid precoding.  ...  Moreover, with the aid of the angle domain matrix, the MU massive MIMO system can be viewed as a type of non-orthogonal angle division multiple access (ADMA) to simultaneously serve multiple users at the  ...  A prior knowledge aided hybrid channel tracking scheme has been developed in [23] for Tera-Hertz beamspace massive MIMO systems, which excavates a temporal variation law of the physical direction for  ... 
arXiv:1702.02690v2 fatcat:73okh5zasfhu7litluiqjk2fxu

An overview of multi-antenna technologies for space-ground integrated networks

Lei Gao, Shuo Zhang, Ziyao Liu, Jinyong Lin, Shuai Wang, Chengwen Xing
2016 Science China Information Sciences  
Moreover, the combinations of multiantenna technologies with other advanced wireless technologies e.g., physical layer network coding, cooperative communication, etc., are also elaborated.  ...  important enabling technologies for future converged SGINs.  ...  Acknowledgements This work was supported in part by National Scientific Foundation of China for Young Scholars (Grant Nos. 61301088, 61301089) .  ... 
doi:10.1007/s11432-016-0588-8 fatcat:2zfpw2cuizgplmgftxcvjou4fe

Design of large polyphase filters in the Quadratic Residue Number System

Gian Carlo Cardarilli, Alberto Nannarelli, Yann Oster, Massimo Petricca, Marco Re
2010 2010 Conference Record of the Forty Fourth Asilomar Conference on Signals, Systems and Computers  
relay network in which a number of users communicate simultaneously with a common destination with the help of one relay node, by using orthogonal frequency division multiple access (OFDMA).  ...  It is then shown that by using an M-band DFT filter bank and an N-band DFT filter bank in conjunction with the two arrays, it is possible to create a virtual filter bank with $MN$ bands (i.e., MN beams  ... 
doi:10.1109/acssc.2010.5757589 fatcat:ccxnu5owr5fyrcjcqukumerueq