On Linear Physical-Layer Network Coding with Non-Identical Modulation

Physical-layer network coding (PNC) is able to boost the error probability performance or throughput of a set of multi-source and multi-hop wireless networks. In this paper, we put forth a new asymmetric linear PNC (A-LPNC) scheme for the setup where the users are subject to non-identical power and...

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Published in:IEEE Wireless Communications and Networking Conference : [proceedings] : WCNC pp. 1 - 7
Main Authors: Chen, Qiuzhuo, Yang, Tao
Format: Conference Proceeding
Language:English
Published: IEEE 29.03.2021
Subjects:
compute-and-forward
distance spectrum
Error probability
Fading channels
Modulation
Physical-layer network coding
Simulation
Spread spectrum communication
Transmitters
Wireless networks
ISSN:1558-2612
Online Access:Get full text
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Abstract Physical-layer network coding (PNC) is able to boost the error probability performance or throughput of a set of multi-source and multi-hop wireless networks. In this paper, we put forth a new asymmetric linear PNC (A-LPNC) scheme for the setup where the users are subject to non-identical power and modulation schemes. For deterministic channel, we show that given any unequal average symbol energy, the effective minimum distance of A-LPNC constellation can be made to be identical to the single-user minimum distance lower bound, translated into optimal error probability performance at a medium to high SNR. For fading channels, we show that the optimized network coding coefficients can be found and employed such that the effective minimum distance of A-LPNC is equal to the single-user minimum distance lower bound for integer channel gains. For real-valued channel gains, we present the optimal NC coefficients selection that minimizes the error probability of A-LPNC. These results are verified via simulations.
AbstractList Physical-layer network coding (PNC) is able to boost the error probability performance or throughput of a set of multi-source and multi-hop wireless networks. In this paper, we put forth a new asymmetric linear PNC (A-LPNC) scheme for the setup where the users are subject to non-identical power and modulation schemes. For deterministic channel, we show that given any unequal average symbol energy, the effective minimum distance of A-LPNC constellation can be made to be identical to the single-user minimum distance lower bound, translated into optimal error probability performance at a medium to high SNR. For fading channels, we show that the optimized network coding coefficients can be found and employed such that the effective minimum distance of A-LPNC is equal to the single-user minimum distance lower bound for integer channel gains. For real-valued channel gains, we present the optimal NC coefficients selection that minimizes the error probability of A-LPNC. These results are verified via simulations.
Author Chen, Qiuzhuo
Yang, Tao
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  givenname: Tao
  surname: Yang
  fullname: Yang, Tao
  email: tyang@buaa.edu.cn
  organization: Beihang University,School of Electronics Information Engineering,Beijing,China,100191
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Snippet Physical-layer network coding (PNC) is able to boost the error probability performance or throughput of a set of multi-source and multi-hop wireless networks....
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SubjectTerms compute-and-forward
distance spectrum
Error probability
Fading channels
Modulation
Physical-layer network coding
Simulation
Spread spectrum communication
Transmitters
Wireless networks
Title On Linear Physical-Layer Network Coding with Non-Identical Modulation
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