Open AccessLattice reduction aided tabu search with channel‐dependent stopping criterion for MIMO systems
Author(s) -
Gyamfi Kojo Sarfo,
Baek Jonghyen,
Lee Kyungchun
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.2015.2026
Subject(s) - lattice reduction , tabu search , mimo , reduction (mathematics) , algorithm , mathematics , mathematical optimization , channel (broadcasting) , lattice (music) , computational complexity theory , computer science , telecommunications , physics , geometry , acoustics
An initial solution based on lattice reduction (LR) and a novel stopping criterion for the tabu search (TS) detection algorithm are proposed for use in multiple input multiple output (MIMO) antenna systems. LR aided‐detection is performed and its result is utilised as an initial solution to the TS algorithm, while a measure of the condition of the lattice‐reduced channel is used as a criterion for early termination of the algorithm. On the basis of the simulation results, this approach outperforms other initial solutions by about 3.5 dB at a BER of 10 −3 for the 16‐QAM 16 × 16 MIMO with only a slight increment in computational cost. The proposed stopping criterion reduces the complexity further with virtually no loss in BER performance.