Search: L773:2158 1525 OR L773:0271 4310 OR L773:9781467357609 OR L773:9781467357623 >
Hardware Efficient ...
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Prabhu, HemanthLund University,Lunds universitet,Institutionen för elektro- och informationsteknik,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Electrical and Information Technology,Departments at LTH,Faculty of Engineering, LTH
(author)
Hardware Efficient Approximative Matrix Inversion for Linear Pre-Coding in Massive MIMO
- Article/chapterEnglish2014
Publisher, publication year, extent ...
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2014
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4 s.
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electronicrdacarrier
Numbers
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LIBRIS-ID:oai:lup.lub.lu.se:e7dc60f9-6b5a-49ed-bd10-228c88baa113
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https://lup.lub.lu.se/record/4248962URI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:kon swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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This paper describes a hardware efficient linear pre-coder for Massive MIMO Base Stations (BSs) comprising a very large number of antennas, say, in the order of 100s, serving multiple users simultaneously. To avoid hardware demanding direct matrix inversions required for the Zero-Forcing (ZF) pre-coder, we use low complexity Neumann series based approximations. Furthermore, we propose a method to speed-up the convergence of the Neumann series by using tri-diagonal pre-condition matrices, which lowers the complexity even further. As a proof of concept a flexible VLSI architecture is presented with an implementation supporting matrix inversion of sizes up-to 16 × 16. In 65 nm CMOS, a throughput of 0.5M matrix inversions per sec is achieved at clock frequency of 420 MHz with a 104K gate count.
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Edfors, OveLund University,Lunds universitet,Institutionen för elektro- och informationsteknik,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Electrical and Information Technology,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)tde-oed
(author)
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Rodrigues, JoachimLund University,Lunds universitet,Institutionen för elektro- och informationsteknik,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Electrical and Information Technology,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)tde-jro
(author)
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Liu, LiangLund University,Lunds universitet,Institutionen för elektro- och informationsteknik,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Electrical and Information Technology,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)eit-lli
(author)
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Rusek, FredrikLund University,Lunds universitet,Institutionen för elektro- och informationsteknik,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Electrical and Information Technology,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)it-fru
(author)
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Institutionen för elektro- och informationsteknikInstitutioner vid LTH
(creator_code:org_t)
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In:[Host publication title missing], s. 1700-17030271-43102158-1525
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