Concatenated codes using coded modulation with a phase shift

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Abstract

A new coded modulation with a phase shift is proposed. The parity bits decide how to shift the signal constellation point of information bits in the transmitter. In the receiver, the phase shift detector estimates how much the constellation points are shifted and then recovers the parity bit. Based on the recovered parity bit, soft input soft output decoding is carried out. The asymptotic coding gains of the proposed scheme using the (9,8) single parity check code are 3 dB and 0.7 dB when compared with the uncoded BPSK and QPSK, respectively. It is shown with simulations that the proposed scheme using the (9,8) single parity check code has at bit error rate 10 -5 about 2 dB gain compared with uncoded transmission and 0.5 dB gain compared with the (9,8) conventional single parity check code. In addition, concatenated codes are designed using the proposed coded modulation as the inner code. The concatenated code using the (255,247) Reed-Solomon code as the outer code and the proposed coded modulation as the inner code is designed as an example. It is shown that it has about 2 dB gain at bit error rate 10 -5 when compared with the conventional (255,247) Reed-Solomon code.
Original languageEnglish
Title of host publication2012 18th Asia-Pacific Conference on Communications
Subtitle of host publicationAPCC
PublisherIEEE Institute of Electrical and Electronic Engineers
Pages889-893
ISBN (Electronic)978-1-4673-4728-0, 978-1-4673-4727-3, 978-1-4673-4727-3
ISBN (Print)978-1-4673-4726-6
DOIs
Publication statusPublished - 2012
MoE publication typeA4 Article in a conference publication
Event18th Asia-Pacific Conference on Communications, APCC - Jeju Island, Korea, Democratic People's Republic of
Duration: 15 Oct 201217 Oct 2012
Conference number: 18

Conference

Conference18th Asia-Pacific Conference on Communications, APCC
Abbreviated titleAPCC
CountryKorea, Democratic People's Republic of
CityJeju Island
Period15/10/1217/10/12

Keywords

  • coded modulation
  • concatenated codes
  • phase shift
  • Reed-Solomon codes
  • encoding
  • gain
  • binary phase shift keying

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  • Cite this

    Kim, H., & Mämmelä, A. (2012). Concatenated codes using coded modulation with a phase shift. In 2012 18th Asia-Pacific Conference on Communications: APCC (pp. 889-893). IEEE Institute of Electrical and Electronic Engineers. https://doi.org/10.1109/APCC.2012.6388217