Open AccessLow‐complexity constant multiplication for layer processing in MIMO symbol detection
Author(s) -
Kim TaeHwan
Publication year - 2015
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.2015.0297
Subject(s) - multiplication (music) , constant (computer programming) , mimo , symbol (formal) , arithmetic , computer science , signal processing , mathematics , algorithm , telecommunications , digital signal processing , channel (broadcasting) , computer hardware , combinatorics , programming language
A method to reduce the hardware complexity of the layer processing units for symbol detectors in multiple‐input–multiple‐output (MIMO) communication systems is presented. In the proposed method, the symbol constellation for each layer is modified virtually so as to reduce the hardware complexity of the constant multipliers required for the layer processing unit. For systems with 64‐quadrature‐amplitude modulation (QAM), the proposed method reduces the number of arithmetic units implementing constant multipliers by 42.9%, when compared with the conventional method.