Reconfigurable cell array as enabler for supporting concurrent multiple standards in mobile terminals

Chenxin Zhang, Isael Diaz, Per Andersson, Joachim Rodrigues, Viktor Öwall

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

This manuscript presents an reconfigurable architecture, suitable to process time synchronization for multiple OFDM standards. The proposed architecture is based on a coarse-grained reconfigurable cell array, and the different radio standards under analysis are IEEE 802.11n, 3GPP Long Term Evolution and Digital Video Broadcast for cellular devices. With the use of a 2-by-2 cell array, composed of two decoupled processing and memory pairs, two concurrent data streams from any two of three radio standards are supported. Dynamic configuration of the cell array enables run-time switching between different standards, and the underlying hardware resources are shared when concurrent streams are processed. The enhanced RISC architecture of the processor cells contributes to a high instruction level parallelism, where the close interactions between processing and memory cells meet the stringent real-time processing requirement. The proposed 2-by-2 cell array is synthesized using a 65nm low-power regular threshold standard cell CMOS library, which occupies 0.338mm2 area and has a maximum clock frequency of 534MHz. The reconfigurable cell array offers a high flexibility while uses 1.83 times more area when compared to a function identical ASIC solution.
Original languageEnglish
Title of host publication10th Swedish System-On-Chip Conference
PublisherSwedish Chapter of IEEE Solid-State Circuits Society (SSCS)
Number of pages5
Publication statusPublished - 2010
EventSwedish System-on-Chip Conference 2010 (SSoCC'10) - Kolmården, Sweden
Duration: 2010 May 32010 May 4

Conference

ConferenceSwedish System-on-Chip Conference 2010 (SSoCC'10)
Country/TerritorySweden
CityKolmården
Period2010/05/032010/05/04

Subject classification (UKÄ)

  • Electrical Engineering, Electronic Engineering, Information Engineering

Free keywords

  • OFDM
  • Synchronization.
  • Multi-standard
  • Reconfigurable cell array
  • CGRA

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