On the performance of turbo product codes and LDPC codes over partial-response channels Conference Paper uri icon

abstract

  • We investigate the performance of low density parity check (LDPC) codes, single-parity turbo product codes (TPC/SPC) and multi-parity turbo product codes (TPC/MPC) over various partial-response (PR) channels encountered in magnetic and magneto-optical (MO) recording systems, like PR4/EPR4 and PR1/PR2 channels. The codes have similarity in structures and can be decoded using simple message-passing algorithms. We show that the combination of a TPC/SPC code and a precoded PR channel results in good distance spectrum due to inter-leaving gain. Density Evolution is then used to compute the thresholds for TPC/SPC and LDPC codes over PR channels. Through analysis and through simulations, we show the three types of codes yield comparable bit error rate performance with similar complexity, but they exhibit quite different error statistics, which in turn may result in sharp differences in block failure rate after the Reed-Solomon error correction code (RS-ECC).

name of conference

  • ICC 2001. IEEE International Conference on Communications. Conference Record (Cat. No.01CH37240)

published proceedings

  • 2001 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-10, CONFERENCE RECORD

author list (cited authors)

  • Li, J., Kurtas, E., Narayanan, K. R., & Georghiades, C. N.

citation count

  • 8

complete list of authors

  • Li, J||Kurtas, E||Narayanan, KR||Georghiades, CN

publication date

  • January 2001