Open AccessDenoising Mapping Utilizing Constellation Symmetry in Denoise‐and‐Forward Two‐Way Relay Channels
Author(s) -
Zheng Jianping,
Bai Baoming,
Li Ying
Publication year - 2012
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.12.0211.0507
Subject(s) - constellation , relay , quadrature (astronomy) , computer science , algorithm , noise reduction , reduction (mathematics) , symmetry (geometry) , cluster analysis , topology (electrical circuits) , electronic engineering , mathematics , artificial intelligence , engineering , physics , geometry , combinatorics , power (physics) , quantum mechanics , astronomy
The denoising mapping with the closest‐neighbor clustering (CNC) method in denoise‐and‐forward two‐way relay channels is studied. Specifically, the symmetry of the constellations in source terminals A and B is utilized to reduce the complexity of the CNC method. The specific case considered first to illustrate how the constellation symmetry works in the CNC method is the quadrature phase‐shift keying constellation in A and B and the single‐antenna deployment in all terminals. This case study shows that an enormous complexity reduction can be achieved. Next, the result is extended to multiple‐antenna scenarios and square quadrature amplitude modulations.