?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=On+the+Finite+Constellation+Sum+Rates+for+ZF+and+CI+Precoding&rft.creator=Salem%2C+A&rft.creator=Masouros%2C+C&rft.description=This+paper+analyzes+the+performance+of+multi-user+multiple-input+multiple-output+(MU-MIMO)+systems%2C+with+a+finite+phase-shift+keying+(PSK)+input+alphabet.+The+achievable+sum+rate+is+investigated+for+two+precoding+techniques%2C+namely%3A+1)+zero+forcing+(ZF)+precoding%2C+2)+constructive+interference+(CI)+precoding.+In+light+of+this%2C+new+analytical+expressions+for+the+average+sum+rate+are+derived+in+the+two+scenarios%2C+and+Monte+Carlo+simulations+are+provided+throughout+to+confirm+the+analysis.+Furthermore%2C+based+on+the+derived+expressions%2C+a+power+allocation+scheme+that+can+ensure+fairness+among+the+users+is+also+investigated.+The+results+in+this+paper+demonstrate+that%2C+the+CI+strictly+outperforms+the+ZF+scheme%2C+and+the+performance+gap+between+the+considered+schemes+depends+essentially+on+the+system+parameters.&rft.subject=MIMO+communication%2C+Monte+Carlo+methods%2C+phase+shift+keying%2C+precoding%2C+wireless+channels&rft.publisher=IEEE&rft.date=2019&rft.type=Proceedings+paper&rft.language=eng&rft.source=+++++In%3A++Proceedings+of+the+2019+IEEE+Wireless+Communications+and+Networking+Conference+(WCNC).++++IEEE+(2019)+++++&rft.format=text&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F10089218%2F1%2FWCNC1.pdf&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F10089218%2F&rft.rights=open