Open AccessParallel concatenated turbo multiple antenna coded modulation: principles and performance
Author(s) -
Cui Dongzhe,
Haimovich Alexander M.,
Chen Hangjun
Publication year - 2002
Publication title -
wireless communications and mobile computing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.42
H-Index - 64
eISSN - 1530-8677
pISSN - 1530-8669
DOI - 10.1002/wcm.79
Subject(s) - turbo code , computer science , turbo equalizer , serial concatenated convolutional codes , concatenated error correction code , transmit diversity , turbo , algorithm , block code , coding gain , bcjr algorithm , fading , antenna diversity , decoding methods , theoretical computer science , antenna (radio) , telecommunications , automotive engineering , engineering
A channel‐coding scheme is introduced that features parallel concatenated recursive systematic codes with multilevel modulation and multiple transmit/receive antennas. The proposed scheme is a type of turbo space–time codes and is referred to as turbo multiple antenna coded modulation (turbo‐MACM). Turbo‐MACM combines the advantages of powerful turbo codes with the transmit/receive diversity of multiple antenna coded modulation. The scheme utilizes recursive and systematic constituent codes and features full rate and, as demonstrated by simulations, full spatial diversity. An iterative symbol‐by‐symbol maximum a posteriori (MAP) algorithm operating in the log domain is developed for decoding turbo‐MACM. Simulation results are provided for 4‐PSK and 8‐PSK schemes over the block‐fading channel. It is shown that the scheme provides an advantage of 3 to 5 dB over conventional space–time codes of comparable complexity. Copyright © 2002 John Wiley & Sons, Ltd.