Accumulate codes based on 1+D convolutional outer codes

Mao Ching Chiu*, Hsiao-Feng Lu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


A new construction of good, easily encodable, and soft-decodable codes is proposed in this paper. The construction is based on serially concatenating several simple 1+D convolutional codes as the outer code, and a rate-1 1/(1+D) accumulate code as the inner code. These codes have very low encoding complexity and require only one shift-forward register for each encoding branch. The input-output weight enumerators of these codes are also derived. Divsalar's simple bound technique is applied to analyze the bit error rate performance, and to assess the minimal required signal-to-noise ratio (SNR) for these codes to achieve reliable communication under AWGN channel. Simulation results show that the proposed codes can provide good performance under iterative decoding.

Original languageEnglish
Pages (from-to)311-314
Number of pages4
JournalIEEE Transactions on Communications
Issue number2
StatePublished - 11 Mar 2009


  • Accumulate codes
  • Convolutional codes
  • Low-density parity-check (LDPC) codes


Dive into the research topics of 'Accumulate codes based on 1+D convolutional outer codes'. Together they form a unique fingerprint.

Cite this