Turbo Codes Application to DS-CDMA Mobile Radio
Summary :
The binary parallel concatenated codes called turbo codes provide relatively large coding gains with reasonable computation complexity. The application of turbo codes to a coherent DS-CDMA mobile radio link with antenna diversity and coherent RAKE combining is considered. A soft-in/soft-out Viterbi decoder that requires less computation complexity is employed instead of maximum a posteriori probability (MAP) decoder. The effect of turbo codes on the achievable bit error rate (BER) performance in frequency selective multipath fading channels is evaluated by computer simulation. It is demonstrated that turbo codes can achieve better BER performance than convolutional codes having the same code rate for the relatively large interleaver size. How the coding gains are impacted by the interleaver size and constraint length of the turbo codes and by the propagation channel condition (power delay profile, the number of resolvable propagation paths, and the maximum Doppler frequency) is discussed.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E81-A No.11 pp.2269-2273
- Publication Date
- 1998/11/25
- Publicized
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- Type of Manuscript
- Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
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Atsushi FUJIWARA, Hirohito SUDA, Fumiyuki ADACHI, "Turbo Codes Application to DS-CDMA Mobile Radio" in IEICE TRANSACTIONS on Fundamentals,
vol. E81-A, no. 11, pp. 2269-2273, November 1998, doi: .
Abstract: The binary parallel concatenated codes called turbo codes provide relatively large coding gains with reasonable computation complexity. The application of turbo codes to a coherent DS-CDMA mobile radio link with antenna diversity and coherent RAKE combining is considered. A soft-in/soft-out Viterbi decoder that requires less computation complexity is employed instead of maximum a posteriori probability (MAP) decoder. The effect of turbo codes on the achievable bit error rate (BER) performance in frequency selective multipath fading channels is evaluated by computer simulation. It is demonstrated that turbo codes can achieve better BER performance than convolutional codes having the same code rate for the relatively large interleaver size. How the coding gains are impacted by the interleaver size and constraint length of the turbo codes and by the propagation channel condition (power delay profile, the number of resolvable propagation paths, and the maximum Doppler frequency) is discussed.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e81-a_11_2269/_p
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@ARTICLE{e81-a_11_2269,
author={Atsushi FUJIWARA, Hirohito SUDA, Fumiyuki ADACHI, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Turbo Codes Application to DS-CDMA Mobile Radio},
year={1998},
volume={E81-A},
number={11},
pages={2269-2273},
abstract={The binary parallel concatenated codes called turbo codes provide relatively large coding gains with reasonable computation complexity. The application of turbo codes to a coherent DS-CDMA mobile radio link with antenna diversity and coherent RAKE combining is considered. A soft-in/soft-out Viterbi decoder that requires less computation complexity is employed instead of maximum a posteriori probability (MAP) decoder. The effect of turbo codes on the achievable bit error rate (BER) performance in frequency selective multipath fading channels is evaluated by computer simulation. It is demonstrated that turbo codes can achieve better BER performance than convolutional codes having the same code rate for the relatively large interleaver size. How the coding gains are impacted by the interleaver size and constraint length of the turbo codes and by the propagation channel condition (power delay profile, the number of resolvable propagation paths, and the maximum Doppler frequency) is discussed.},
keywords={},
doi={},
ISSN={},
month={November},}
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TY - JOUR
TI - Turbo Codes Application to DS-CDMA Mobile Radio
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2269
EP - 2273
AU - Atsushi FUJIWARA
AU - Hirohito SUDA
AU - Fumiyuki ADACHI
PY - 1998
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E81-A
IS - 11
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - November 1998
AB - The binary parallel concatenated codes called turbo codes provide relatively large coding gains with reasonable computation complexity. The application of turbo codes to a coherent DS-CDMA mobile radio link with antenna diversity and coherent RAKE combining is considered. A soft-in/soft-out Viterbi decoder that requires less computation complexity is employed instead of maximum a posteriori probability (MAP) decoder. The effect of turbo codes on the achievable bit error rate (BER) performance in frequency selective multipath fading channels is evaluated by computer simulation. It is demonstrated that turbo codes can achieve better BER performance than convolutional codes having the same code rate for the relatively large interleaver size. How the coding gains are impacted by the interleaver size and constraint length of the turbo codes and by the propagation channel condition (power delay profile, the number of resolvable propagation paths, and the maximum Doppler frequency) is discussed.
ER -
English
