Asymmetric Linear Physical-Layer Network Coding

In this letter, we put forth a new asymmetric linear PNC (A-LPNC) scheme for the setup where the users are subject to non-identical power constraints and modulation schemes. For deterministic channel, we show that given any pair of average symbol energies, the effective minimum distance of A-LPNC co...

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Vydáno v:IEEE communications letters Ročník 25; číslo 10; s. 3214 - 3218
Hlavní autoři: Chen, Qiuzhuo, Yang, Tao, Liu, Rongke
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York IEEE 01.10.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Asymmetry
Codes
Coding
compute-and-forward
Constellations
distance spectrum
Error probability
Fading channels
Lower bounds
Modulation
Network coding
Physical-layer network coding
Receivers
Signal to noise ratio
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ISSN:1089-7798, 1558-2558
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Shrnutí:In this letter, we put forth a new asymmetric linear PNC (A-LPNC) scheme for the setup where the users are subject to non-identical power constraints and modulation schemes. For deterministic channel, we show that given any pair of average symbol energies, the effective minimum distance of A-LPNC constellation can be made to be identical to the single-user minimum distance, translated into optimal error probability performance at a medium to high SNR. For fading channel, 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.
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ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2021.3091880