IEICE TRANSACTIONS on Communications
Reduced-Complexity Constellation Mapping and Decoding in Wireless Multi-Way Relaying Networks
Summary :
In this paper, we focus on the multi-way relaying channel where K users wish to exchange information with each other within two phases. Precoding at each user and the relay is carefully constructed to ensure that the signals from the same user pair are grouped together and cross-pair interference can be cancelled. Reliable detection is challenging at the relay since the observation constellation is no longer one of the regular ones, due to the fact that a relay observation is the superposition of the messages from one of the $ rac{1}{2}K(K-1)$ user pairs. When the trellis coded modulation is used at each node, a simple constellation mapping function and a reduced-states decoding scheme can be applied at the relay, which result in much lower complexity. Furthermore, a modified version of the decoding method is also developed which is called the re-encoding-avoidance scheme at the relay. Monte-Carlo simulation results are provided to demonstrate the performance of the proposed scheme.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E97-B No.4 pp.702-711
- Publication Date
- 2014/04/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.E97.B.702
- Type of Manuscript
- PAPER
- Category
- Fundamental Theories for Communications
Authors
Ning WANG
University of Science and Technology of China,Nanjing Research Institute of Electronics Technology
Zhiguo DING
Newcastle University
Xuchu DAI
University of Science and Technology of China
Keyword
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Ning WANG, Zhiguo DING, Xuchu DAI, "Reduced-Complexity Constellation Mapping and Decoding in Wireless Multi-Way Relaying Networks" in IEICE TRANSACTIONS on Communications,
vol. E97-B, no. 4, pp. 702-711, April 2014, doi: 10.1587/transcom.E97.B.702.
Abstract: In this paper, we focus on the multi-way relaying channel where K users wish to exchange information with each other within two phases. Precoding at each user and the relay is carefully constructed to ensure that the signals from the same user pair are grouped together and cross-pair interference can be cancelled. Reliable detection is challenging at the relay since the observation constellation is no longer one of the regular ones, due to the fact that a relay observation is the superposition of the messages from one of the $ rac{1}{2}K(K-1)$ user pairs. When the trellis coded modulation is used at each node, a simple constellation mapping function and a reduced-states decoding scheme can be applied at the relay, which result in much lower complexity. Furthermore, a modified version of the decoding method is also developed which is called the re-encoding-avoidance scheme at the relay. Monte-Carlo simulation results are provided to demonstrate the performance of the proposed scheme.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E97.B.702/_p
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@ARTICLE{e97-b_4_702,
author={Ning WANG, Zhiguo DING, Xuchu DAI, },
journal={IEICE TRANSACTIONS on Communications},
title={Reduced-Complexity Constellation Mapping and Decoding in Wireless Multi-Way Relaying Networks},
year={2014},
volume={E97-B},
number={4},
pages={702-711},
abstract={In this paper, we focus on the multi-way relaying channel where K users wish to exchange information with each other within two phases. Precoding at each user and the relay is carefully constructed to ensure that the signals from the same user pair are grouped together and cross-pair interference can be cancelled. Reliable detection is challenging at the relay since the observation constellation is no longer one of the regular ones, due to the fact that a relay observation is the superposition of the messages from one of the $ rac{1}{2}K(K-1)$ user pairs. When the trellis coded modulation is used at each node, a simple constellation mapping function and a reduced-states decoding scheme can be applied at the relay, which result in much lower complexity. Furthermore, a modified version of the decoding method is also developed which is called the re-encoding-avoidance scheme at the relay. Monte-Carlo simulation results are provided to demonstrate the performance of the proposed scheme.},
keywords={},
doi={10.1587/transcom.E97.B.702},
ISSN={1745-1345},
month={April},}
Copy
TY - JOUR
TI - Reduced-Complexity Constellation Mapping and Decoding in Wireless Multi-Way Relaying Networks
T2 - IEICE TRANSACTIONS on Communications
SP - 702
EP - 711
AU - Ning WANG
AU - Zhiguo DING
AU - Xuchu DAI
PY - 2014
DO - 10.1587/transcom.E97.B.702
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E97-B
IS - 4
JA - IEICE TRANSACTIONS on Communications
Y1 - April 2014
AB - In this paper, we focus on the multi-way relaying channel where K users wish to exchange information with each other within two phases. Precoding at each user and the relay is carefully constructed to ensure that the signals from the same user pair are grouped together and cross-pair interference can be cancelled. Reliable detection is challenging at the relay since the observation constellation is no longer one of the regular ones, due to the fact that a relay observation is the superposition of the messages from one of the $ rac{1}{2}K(K-1)$ user pairs. When the trellis coded modulation is used at each node, a simple constellation mapping function and a reduced-states decoding scheme can be applied at the relay, which result in much lower complexity. Furthermore, a modified version of the decoding method is also developed which is called the re-encoding-avoidance scheme at the relay. Monte-Carlo simulation results are provided to demonstrate the performance of the proposed scheme.
ER -
English
