Computer Science ›› 2017, Vol. 44 ›› Issue (Z6): 284-287.doi: 10.11896/j.issn.1002-137X.2017.6A.065

Previous Articles     Next Articles

New Physical Layer Network Coding Denoising Mapping Algorithm Based on MQAM

LU Ming-yue, GUO Dao-xing and NIU He-hao   

  • Online:2017-12-01 Published:2018-12-01

Abstract: To overcome the problem of constellation points ambiguity in physical layer network coding(PLNC ),this paper proposed a new QAM-based PLNC de-noising mapping scheme.In this scheme,the relay node rearranges the M-QAM constellation mapping,and merges the points of constellation according to a certain rule.Comparing with traditional scheme,this design reduces the number of constellation points nearly a half,which increases the Euclidean distance between adjacent points in the constellation,thus improves the BER performance.In addition,the relay node only needs demodulation-remapping-modulation,which significantly reduces the processing complexity.Simulation results show the effectiveness of our scheme.

Key words: Quadrature amplitude modulation,Physical layer network coding,Bit error rate,Complexity

[1] ZHANG S,LIEW S,LAM P.Physical-layer Network Coding[C]∥Proc of MobiCom’ 06.Calfomia,2006:358-365.
[2] AKINO T K,POPOVSKI P,TAROKH V.Optimized constellations for two-way wireless relaying with physical network co-ding[J].IEEE J.Sel.Areas Commun.,2009,27(5):773-787.
[3] YANG H J,CHOI Y,CHUN J.Modified high-order PAMs for binary coded physical-layer network coding[J].IEEE Commun.Lett.,2010,14(8):689-691.
[4] WANG S,SONG Q,GUO L,et al.Constellation mapping for physical-layer network coding with M-QAM modulation[C]∥Proc.IEEE GLOBECOM,2012:4429-4434.
[5] WANG F,SONG Q,WANG S,et al.Rate and power adaptation for physical-layer network coding with M-QAM modulation[C]∥Proc.IEEE ICC.2014:5508-5513.
[7] YU Q Y,ZHANG D Y,CHEN H H,et al.Physical-Layer Network Coding Systems With MFSK Mudulation[J].IEEE Trans.Veh.Tech.,2016,65(1):204-216.
[8] WANG D,FU S L,LU K J.Channel coding design to supportasynchronous physical layer network coding[C]∥Proc 28th IEEE Conference on Global Tecommunications.USA,IEEE,2009:3267-3272.
[9] ZHANG S L,LIEW S C.Channel Coding and Decoding in a Relay System Operated with Physical-Layer Network Coding[J].IEEE J.Sel.Areas Commun.,2009,27(5):788-796.
[10] WIIBBEN D,LANG Y D.Generalized Sum-Product Algorithmfor Joint Channel Decoding and Physical-Layer Network Coding in Two-Way Relay System[C]∥Clobal Communications Conference,2010.Florida,USA,2010:1-5 .
[11] NAMBOODIRI V,RANJAN B S.Physical Layer Network Co-ding for Two-Way Relaying with QAM and Latin Squares[C]∥Clobal Communications Conference.IEEE,2012:2286-2292.

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!