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1887

access icon free Efficient layer stopping technique for layered LDPC decoding

© The Institution of Engineering and Technology
Received 03/06/2013, Published

Early termination techniques are widely used in low-density party-check (LDPC) decoding since the decoding operations can be tremendously reduced. A layer stopping criterion is proposed to reduce further the operations within iterative layered LDPC decoding. The proposed criterion detects the high reliability of the soft log-likelihood ratio with a threshold in each layer. Then the layer operations can be stopped when the reliable layers are detected. The proposed criterion combined with early termination techniques can efficiently reduce the layer operations by up to 60% with a negligible loss of coding gain at Eb /N 0 of 3.2 dB.

Inspec keywords: iterative decoding; reliability; parity check codes

Other keywords: soft log-likelihood ratio; early termination techniques; reliability; layer stopping criterion; layer stopping technique; iterative layered LDPC decoding; coding gain; low-density party-check decoding

Subjects: Reliability; Codes

References

    1. 1)
      • 2. Cui, Z., et al: ‘Efficient decoder design for high-throughput LDPC decoding’. Proc. IEEE Asia Pacific Conf. Circuits and Systems, Macao, China, December 2008, pp. 1640–1643.
    2. 2)
      • 1. Gallager, R.G.: ‘Low-density parity-check codes’ (MIT Press, Cambridge, MA, 1963).
    3. 3)
      • 3. Shih, X.-Y., et al: ‘An 8.29 mm2 52 mW multi-mode LDPC decoder design for mobile WiMAX system in 0.13 μm CMOS process’, IEEE J. Solid-State Circuits, 2008, 43, (3), pp. 672–683 (doi: 10.1109/JSSC.2008.916606).
    4. 4)
      • 6. Chien, Y.-H., Ku, M.-K., Liu, J.-B.: ‘Low-complexity iteration control algorithm for multi-rate partially parallel layered LDPC decoders’, Electron. Lett., 2012, 48, (22), pp. 1406–1407 (doi: 10.1049/el.2012.2625).
    5. 5)
      • 5. Li, J., et al: ‘Memory efficient layered decoder design with early termination for LDPC codes’. Proc. IEEE Int. Symp. Circuits and Systems, Rio de Janerio, Brazil, May 2011, pp. 2697–2700.
    6. 6)
      • 4. Ueng, Y.-L., et al: ‘Modified layered message passing decoding with dynamic scheduling and early termination for QC-LDPC codes’. Proc. IEEE Int. Symp. Circuits and Systems, Taipei, China, May 2009, pp. 121–124.
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