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ICASSP
2011
IEEE

Fixed- versus floating-point implementation of MIMO-OFDM detector

12 years 7 months ago
Fixed- versus floating-point implementation of MIMO-OFDM detector
In this paper, we investigate the opportunities offered by floatingpoint arithmetics in enabling an assembly and intrinsics free highlevel language based development. We compare the characteristics of floating- and fixed-point arithmetics by simulating a MIMOOFDM soft output detector in a 3G LTE link level simulator. The hardware complexity and energy dissipation are analyzed by implementing three programmable processors supporting 32- and 12-bit floating-point and 16-bit fixed-point arithmetics. The processors are based on the transport triggered architecture (TTA) that has a very low programmability overhead. The analysis shows that at the same goodput rate a floating-point implementation can achieve a lower gate count and better power efficiency than a fixed-point design.
Janne Janhunen, Perttu Salmela, Olli Silvén
Added 21 Aug 2011
Updated 21 Aug 2011
Type Journal
Year 2011
Where ICASSP
Authors Janne Janhunen, Perttu Salmela, Olli Silvén, Markku J. Juntti
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