Open AccessOrthogonal projection based asymmetric multi‐way relaying with antenna subset selection
Author(s) -
Li Wei,
Li Guobing,
Zhu Shihua,
Hua Kun
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2014.1032
Subject(s) - relay , linear network coding , diversity gain , computer science , relay channel , computational complexity theory , node (physics) , antenna (radio) , wireless sensor network , mimo , wireless , computer network , topology (electrical circuits) , algorithm , mathematics , telecommunications , engineering , power (physics) , channel (broadcasting) , physics , structural engineering , quantum mechanics , combinatorics , network packet
An asymmetric multi‐way relay communication scheme using orthogonal projection and analogue network coding is proposed. The scheme is designed for the wireless sensor network, where one sink node (SN) exchanges information with multiple user nodes via a relay station and both the SN and user nodes have low complexity structures. It has been observed that the minimal number of the relay antennas can be smaller than that of the total data streams. Moreover, when the number of the relay antennas is larger than the minimum, a paired throughput based max–min criterion with low computational complexity is developed to select the optimal relay antenna subset and guarantee full diversity gain. The numerical results demonstrate the high performance of the proposed communication scheme and antenna subset selection criterion.