A High-Throughput Low-Power Soft Bit-Flipping LDPC Decoder in 28 nm FD-SOI
Paper in proceedings, 2018

We present a low-density parity check (LDPC) decoder using the adaptive degeneration (AD) algorithm with a (3600, 3000) LDPC code, integrated in 1.85 mm^2 in 28 nm FD-SOI. With early termination and variable latency decoding, this decoder achieves an optimal energy efficiency of 0.16 pJ/bit and information throughput of 13.6 Gbps with a core supply voltage of 0.4 V. At a core supply voltage of 1.0 V, it achieves 0.58 pJ/bit energy efficiency and 181 Gbps throughput. With constant latency equal to the maximum number of iterations, it achieves optimal energy efficiency of 0.52 pJ/bit and information throughput of 7.2 Gbps at a supply voltage of 0.55 V, and 1.9 pJ/bit energy and 24 Gbps throughput at 1.0 V. The net coding gain at a bit error rate of 10^(−12) is 8.7 dB.

Author

Kevin Cushon

Chalmers, Computer Science and Engineering (Chalmers), Computer Engineering (Chalmers)

Per Larsson-Edefors

Chalmers, Computer Science and Engineering (Chalmers), Computer Engineering (Chalmers), Electronics Systems

Peter Andrekson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

44th European Solid-State Circuits Conference (ESSCIRC)
Dresden, Germany,

Energy-efficient optical fibre communication

Knut and Alice Wallenberg Foundation, 2014-07-01 -- 2019-06-30.

Areas of Advance

Information and Communication Technology

Driving Forces

Sustainable development

Subject Categories

Telecommunications

Communication Systems

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/ESSCIRC.2018.8494261

ISBN

9781538654040

More information

Latest update

12/19/2018