?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Analog+beam+selection+schemes+of+DFT-based+hybrid+beamforming+multiuser+systems&rft.creator=Han%2C+Y&rft.creator=Jin%2C+S&rft.creator=Zhang%2C+J&rft.creator=Zhang%2C+J&rft.creator=Wong%2C+K-K&rft.description=This+paper+studies+analog+beam+selection+schemes+of+discrete+Fourier+transform+(DFT)+based+hybrid+beamforming+systems.+We+first+derive+approximations+of+the+achievable+rates+when+maximum-ratio+combining+(MRC)+receiver+and+maximum-ratio+transmitting+(MRT)+precoder+are+used+in+the+uplink+and+downlink%2C+respectively.+It+is+shown+that+the+achievable+rate+of+the+hybrid+beamforming+system+is+improved+with+the+increase+of+the+number+of+radio+frequency+chains.+Also%2C+it+is+found+that+the+orthogonality+condition+among+the+line-of-sight+(LoS)+paths+from+different+users+directly+determines+the+interference+cancellation+capability+of+the+MRC+receiver+or+the+MRT+precoder.+Based+on+our+analytical+results%2C+we+propose+two+novel+DFT+beam+selection+schemes%2C+referred+to+as+exhausted+searching+and+per-user+selection.+Numerical+results+show+that+the+first+scheme+achieves+higher+rate+while+the+second+one+is+a+simple+suboptimal+strategy+with+low+complexity%2C+which+is+practically+more+attractive.&rft.subject=Array+signal+processing%2C+Receivers%2C+Uplink%2C+Discrete+Fourier+transforms%2C+Fading+channels%2C+Downlink%2C+MIMO+communication&rft.publisher=IEEE&rft.date=2018-03-01&rft.type=Proceedings+paper&rft.publisher=23rd+Asia-Pacific+Conference+on+Communications+(APCC)+-+Bridging+the+Metropolitan+and+the+Remote&rft.language=eng&rft.source=+++++In%3A++The+Proceedings+of+the+2017+23rd+Asia-Pacific+Conference+on+Communications+(APCC).++++IEEE+(2018)+++++&rft.format=text&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F10055175%2F1%2FWong_Analog%2520Beam%2520Selection%2520Schemes%2520of%2520DFT-based%2520Hybrid%2520Beamforming%2520Multiuser%2520Systems_AAM.pdf&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F10055175%2F&rft.rights=open