TY - JOUR
T1 - Energy efficient two-tier network-coded relaying systems considering processing energy costs
AU - Qi, Nan
AU - Xiao, Ming
AU - Tsiftsis, Theodoros A.
AU - Yao, Rugui
AU - Mumtaz, Shahid
N1 - Funding Information:
Manuscript received August 18, 2017; revised June 27, 2018; accepted November 13, 2018. Date of publication November 16, 2018; date of current version January 15, 2019. This work was supported in part by the National Natural Science Foundation of China under Grants 61871327 and 61801218, in part by the Natural Science Foundation of Jiangsu Province under Grant BK20180424, and in part by State Key Laboratory of Air Traffic Management System and Technology under Grant SKLATM201808, and Key Laboratory of Dynamic Cognitive System of Electromagnetic Spectrum Space, Ministry of Industry and Information Technology under Grant KF20181917. The review of this paper was coordinated by Prof. S. Zhang. (Corresponding authors: Nan Qi and Ming Xiao.) N. Qi is with the Key Laboratory of Dynamic Cognitive System of Electromagnetic Spectrum Space, Ministry of Industry and Information Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China, and also with the National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China (e-mail:, [email protected]).
Publisher Copyright:
© 1967-2012 IEEE.
PY - 2019/1
Y1 - 2019/1
N2 - In this paper, a two-tier network coding (TNC) scheme is proposed for the multi-user multi-relay transmission scenarios. Specifically, TNC is conducted at each individual relay, where two groups of source messages are combined into one network codeword that is forwarded to dual destinations. Finally, two groups of source messages are jointly recovered from different network codewords at the destinations. Both analytical and simulation results demonstrate that the proposed scheme outperforms the current state of art in terms of the energy efficiency (EE). In addition, the impacts of multiple parameters, including the number of users, SNR and relay locations on the average EE have been demonstrated, which provide valuable insights for the system designs of future wireless networks.
AB - In this paper, a two-tier network coding (TNC) scheme is proposed for the multi-user multi-relay transmission scenarios. Specifically, TNC is conducted at each individual relay, where two groups of source messages are combined into one network codeword that is forwarded to dual destinations. Finally, two groups of source messages are jointly recovered from different network codewords at the destinations. Both analytical and simulation results demonstrate that the proposed scheme outperforms the current state of art in terms of the energy efficiency (EE). In addition, the impacts of multiple parameters, including the number of users, SNR and relay locations on the average EE have been demonstrated, which provide valuable insights for the system designs of future wireless networks.
KW - Energy efficiency
KW - outage probability
KW - relay forwarding
KW - two-tier network coding
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U2 - 10.1109/TVT.2018.2881653
DO - 10.1109/TVT.2018.2881653
M3 - Article
AN - SCOPUS:85056708043
SN - 0018-9545
VL - 68
SP - 909
EP - 1003
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
IS - 1
M1 - 8537924
ER -