Dynamic precision scaling for low power WCDMA receiver

Hai Nam Nguyen 1 Daniel Menard 1 Olivier Sentieys 1
1 CAIRN - Energy Efficient Computing ArchItectures with Embedded Reconfigurable Resources
Inria Rennes – Bretagne Atlantique , IRISA-D3 - ARCHITECTURE
Abstract : One of the most important applications of digital signal processing (DSP) is wireless communication. This kind of application requires low power implementation of DSP, which generally uses fixed-point arithmetic. The fixed-point architectures should be developed to maintain the energy consumption power at a reasonable level. In this paper, an approach which adapts the fixed-point specification according to the input receiver signal-to-noise ratio (SNR) is proposed. To underline our approach interest, the rake receiver of a WCDMA receiver is examined. Results show about 25% - 40% energy savings with our dynamic precision approach.
Keywords : code division multiple access digital signal processing chips fixed point arithmetic low-power electronics radio receiversdigital signal processing dynamic precision scaling energy consumption energy saving fixed-point arithmetic input receiver signal-to-noise ratio low power WCDMA receiver power consumption wideband code division multiple access wireless communication
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Conference papers
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Contributor : Daniel Menard <>
Submitted on : Monday, November 16, 2009 - 4:34:55 PM
Last modification on : Thursday, November 15, 2018 - 11:57:39 AM

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Hai Nam Nguyen, Daniel Menard, Olivier Sentieys. Dynamic precision scaling for low power WCDMA receiver. IEEE International Symposium on Circuits and Systems, 2009. ISCAS 2009, May 2009, Taipei, Taiwan. pp.205-208, ⟨10.1109/ISCAS.2009.5117721⟩. ⟨inria-00432584⟩

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