?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=FlexCore%3A+Massively+Parallel+and+Flexible+Processing+for+Large+MIMO+Access+Points&rft.creator=Husmann%2C+C&rft.creator=Georgis%2C+G&rft.creator=Nikitopoulos%2C+K&rft.creator=Jamieson%2C+K&rft.description=Large+MIMO+base+stations+remain+among+wireless+network+designers%E2%80%99+best+tools+for+increasing+wireless+throughput+while+serving+many+clients%2C+but+current+system+designs%2C+sacrifice+throughput+with+simple+linear+MIMO+detection+algorithms.+Higher-performance+detection+techniques+are+known%2C+but+remain+off+the+table+because+these+systems+parallelize+their+computation+at+the+level+of+a+whole+OFDM+subcarrier%2C+sufficing+only+for+the+less+demanding+linear+detection+approaches+they+opt+for.+This+paper+presents+FlexCore%2C+the+first+computational+architecture+capable+of+parallelizing+the+detection+of+large+numbers+of+mutually-interfering+information+streams+at+a+granularity+below+individual+OFDM+subcarriers%2C+in+a+nearly-embarrassingly+parallel+manner+while+utilizing+any+number+of+available+processing+elements.+For+12+clients+sending+64-QAM+symbols+to+a+12-antenna+base+station%2C+our+WARP+testbed+evaluation+shows+similar+network+throughput+to+the+state-of-the-art+while+using+an+order+of+magnitude+fewer+processing+elements.+For+the+same+scenario%2C+our+combined+WARP-GPU+testbed+evaluation+demonstrates+a+19x+computational+speedup%2C+with+97%25+increased+energy+efficiency+when+compared+with+the+state+of+the+art.+Finally%2C+for+the+same+scenario%2C+an+FPGA-based+comparison+between+FlexCore+and+the+state+of+the+art+shows+that+FlexCore+can+achieve+up+to+96%25+better+energy+efficiency%2C+and+can+offer+up+to+32x+the+processing+throughput.&rft.publisher=USENIX&rft.date=2017-03-27&rft.type=Proceedings+paper&rft.publisher=NSDI&rft.language=eng&rft.source=+++++In%3A++Proceedings+of+the+14th+USENIX+Symposium+on+Networked+Systems+Design+and+Implementation+(NSDI+'17).++++USENIX%3A+Boston%2C+MA%2C+USA.+(2017)+++++&rft.format=text&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F1543345%2F7%2FJamieson_nsdi17-husmann.pdf&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F1543345%2F&rft.rights=open