TY - GEN
T1 - Low Complexity Soft Decoding for Physical Layer Network Coding with Coded Modulation
AU - Denno, Satoshi
AU - Tanikawa, Tomoya
AU - Tsugita, Hideaki
AU - Hou, Yafei
N1 - Funding Information:
This work has been supported by JSPS KAKENHI Grant Number JP18K04142 and the telecommunications advancement foundation.
Publisher Copyright:
© 2020 IEEE.
PY - 2020/12/14
Y1 - 2020/12/14
N2 - This paper proposes low complexity soft decoding for physical layer network coding with coded modulation that can be applied to bi-directional relay systems with quadrature amplitude modulations (QAMs). Although the received signal at the relay is superposition of the two transmission signals from the terminals in the systems, the signal detection and the channel decoding can be carried out by the proposed decoding with low computational complexity, because the proposed soft decoding can generates the soft input signal with the use of the region detection. The proposed decoding achieves a soft decoding gain without the prohibitive exhaustive search. The proposed decoding can keep the complexity even when higher order QAMs are applied. The performance of the proposed soft decoding is evaluated by computer simulation in a two hop MIMO-OFDM bi-directional relay system. The proposed decoding attains a soft decoding gain of about 2.0dB at the BER of 10-5 in spite of cardinality of QAMs.
AB - This paper proposes low complexity soft decoding for physical layer network coding with coded modulation that can be applied to bi-directional relay systems with quadrature amplitude modulations (QAMs). Although the received signal at the relay is superposition of the two transmission signals from the terminals in the systems, the signal detection and the channel decoding can be carried out by the proposed decoding with low computational complexity, because the proposed soft decoding can generates the soft input signal with the use of the region detection. The proposed decoding achieves a soft decoding gain without the prohibitive exhaustive search. The proposed decoding can keep the complexity even when higher order QAMs are applied. The performance of the proposed soft decoding is evaluated by computer simulation in a two hop MIMO-OFDM bi-directional relay system. The proposed decoding attains a soft decoding gain of about 2.0dB at the BER of 10-5 in spite of cardinality of QAMs.
UR - http://www.scopus.com/inward/record.url?scp=85100029240&partnerID=8YFLogxK
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U2 - 10.1109/ICSPCS50536.2020.9310008
DO - 10.1109/ICSPCS50536.2020.9310008
M3 - Conference contribution
AN - SCOPUS:85100029240
T3 - 2020 14th International Conference on Signal Processing and Communication Systems, ICSPCS 2020 - Proceedings
BT - 2020 14th International Conference on Signal Processing and Communication Systems, ICSPCS 2020 - Proceedings
A2 - Wysocki, Tadeusz A
A2 - Wysocki, Beata J
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 14th International Conference on Signal Processing and Communication Systems, ICSPCS 2020
Y2 - 14 December 2020 through 16 December 2020
ER -