IEICE TRANSACTIONS on Communications
Maximum Likelihood Demodulators and Their Evaluations on Amplify-and-Forward Cooperative OFDM-Based Wireless LAN Systems
Summary :
In this paper, we propose demodulators for the Golden and Alamouti codes in amplify-and-forward (AF) cooperative communication with one relay. The proposed demodulators output exact log likelihood ratios (LLRs) with recursion based on the Jacobian logarithm. The cooperative system with the proposed demodulator for the Golden code has the benefit of efficient data transmission, while the system for the Alamouti code has low demodulation complexity. Quantitative analyses of computational complexity of the proposed demodulators are conducted. The transmission performance for various relay location and power settings is evaluated on cooperative orthogonal frequency division multiplexing (OFDM)-based wireless local area network (LAN) systems. In evaluations, the optimal relay location and power settings are found. The cooperative system with the proposed demodulators for the Golden and Alamouti codes offers 1.5 and 1.9 times larger areas where 10.8 and 5.4Mbit/s can be obtained than a non-cooperative (direct) system in a typical office environment, respectively.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E97-B No.11 pp.2435-2448
- Publication Date
- 2014/11/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.E97.B.2435
- Type of Manuscript
- PAPER
- Category
- Wireless Communication Technologies
Authors
Hayato FUKUZONO
NTT Corporation
Yusuke ASAI
NTT Corporation
Riichi KUDO
NTT Corporation
Koichi ISHIHARA
NTT Corporation
Masato MIZOGUCHI
NTT Corporation
Keyword
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Hayato FUKUZONO, Yusuke ASAI, Riichi KUDO, Koichi ISHIHARA, Masato MIZOGUCHI, "Maximum Likelihood Demodulators and Their Evaluations on Amplify-and-Forward Cooperative OFDM-Based Wireless LAN Systems" in IEICE TRANSACTIONS on Communications,
vol. E97-B, no. 11, pp. 2435-2448, November 2014, doi: 10.1587/transcom.E97.B.2435.
Abstract: In this paper, we propose demodulators for the Golden and Alamouti codes in amplify-and-forward (AF) cooperative communication with one relay. The proposed demodulators output exact log likelihood ratios (LLRs) with recursion based on the Jacobian logarithm. The cooperative system with the proposed demodulator for the Golden code has the benefit of efficient data transmission, while the system for the Alamouti code has low demodulation complexity. Quantitative analyses of computational complexity of the proposed demodulators are conducted. The transmission performance for various relay location and power settings is evaluated on cooperative orthogonal frequency division multiplexing (OFDM)-based wireless local area network (LAN) systems. In evaluations, the optimal relay location and power settings are found. The cooperative system with the proposed demodulators for the Golden and Alamouti codes offers 1.5 and 1.9 times larger areas where 10.8 and 5.4Mbit/s can be obtained than a non-cooperative (direct) system in a typical office environment, respectively.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E97.B.2435/_p
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@ARTICLE{e97-b_11_2435,
author={Hayato FUKUZONO, Yusuke ASAI, Riichi KUDO, Koichi ISHIHARA, Masato MIZOGUCHI, },
journal={IEICE TRANSACTIONS on Communications},
title={Maximum Likelihood Demodulators and Their Evaluations on Amplify-and-Forward Cooperative OFDM-Based Wireless LAN Systems},
year={2014},
volume={E97-B},
number={11},
pages={2435-2448},
abstract={In this paper, we propose demodulators for the Golden and Alamouti codes in amplify-and-forward (AF) cooperative communication with one relay. The proposed demodulators output exact log likelihood ratios (LLRs) with recursion based on the Jacobian logarithm. The cooperative system with the proposed demodulator for the Golden code has the benefit of efficient data transmission, while the system for the Alamouti code has low demodulation complexity. Quantitative analyses of computational complexity of the proposed demodulators are conducted. The transmission performance for various relay location and power settings is evaluated on cooperative orthogonal frequency division multiplexing (OFDM)-based wireless local area network (LAN) systems. In evaluations, the optimal relay location and power settings are found. The cooperative system with the proposed demodulators for the Golden and Alamouti codes offers 1.5 and 1.9 times larger areas where 10.8 and 5.4Mbit/s can be obtained than a non-cooperative (direct) system in a typical office environment, respectively.},
keywords={},
doi={10.1587/transcom.E97.B.2435},
ISSN={1745-1345},
month={November},}
Copy
TY - JOUR
TI - Maximum Likelihood Demodulators and Their Evaluations on Amplify-and-Forward Cooperative OFDM-Based Wireless LAN Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 2435
EP - 2448
AU - Hayato FUKUZONO
AU - Yusuke ASAI
AU - Riichi KUDO
AU - Koichi ISHIHARA
AU - Masato MIZOGUCHI
PY - 2014
DO - 10.1587/transcom.E97.B.2435
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E97-B
IS - 11
JA - IEICE TRANSACTIONS on Communications
Y1 - November 2014
AB - In this paper, we propose demodulators for the Golden and Alamouti codes in amplify-and-forward (AF) cooperative communication with one relay. The proposed demodulators output exact log likelihood ratios (LLRs) with recursion based on the Jacobian logarithm. The cooperative system with the proposed demodulator for the Golden code has the benefit of efficient data transmission, while the system for the Alamouti code has low demodulation complexity. Quantitative analyses of computational complexity of the proposed demodulators are conducted. The transmission performance for various relay location and power settings is evaluated on cooperative orthogonal frequency division multiplexing (OFDM)-based wireless local area network (LAN) systems. In evaluations, the optimal relay location and power settings are found. The cooperative system with the proposed demodulators for the Golden and Alamouti codes offers 1.5 and 1.9 times larger areas where 10.8 and 5.4Mbit/s can be obtained than a non-cooperative (direct) system in a typical office environment, respectively.
ER -
English
