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Improved memory architecture for multicarrier faster-than-Nyquist iterative decoder

Författare:
Publiceringsår: 2011
Språk: Engelska
Sidor: 296-300
Publikation/Tidskrift/Serie: [Host publication title missing]
Dokumenttyp: Konferensbidrag
Förlag: IEEE--Institute of Electrical and Electronics Engineers Inc.

Sammanfattning

Architectural improvements for a multicarrier

faster-than-Nyquist (FTN) decoder are presented in this work.

A previously designed FTN decoder has been optimized during

implementation, especially with respect to memory considerations

to reduce area and power. The memory optimized architecture

achieves 28.7% savings in overall chip area and provides 43.8%

savings in the estimated power compared to the pre-optimized

design. The BER performance tradeoff from one of the memory

optimization shows that the degradation is acceptable and can

actually provide better performance for certain scenarios. The

other memory optimization considers the minimal buffering

required within the interference canceller, resulting in memory

reduction close to 50% of what was previously reported. The

performance from the actual RTL implementation of the FTN

decoder is also presented in comparison with the floating and

fixed point benchmark performances.

Nyckelord

  • Electrical Engineering, Electronic Engineering, Information Engineering
  • faster-than-Nyquist
  • hardware implementation
  • optimization
  • iterative decoder

Övriga

IEEE Computer Society Annual Symposium on VLSI
Published
  • EIT_HSWC:Coding Coding, modulation, security and their implementation
  • Telecommunication Theory-lup-obsolete
  • Digital ASIC-lup-obsolete
  • Elektronikkonstruktion-lup-obsolete

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