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.
- antenna arrays
- error statistics
- MIMO communication
- quadrature amplitude modulation
- search problems
- wireless channels
Gyamfi, S., Baek, J., & Lee, K. (2015). Lattice reduction aided tabu search with channel-dependent stopping criterion for MIMO systems. Electronics Letters, 51(24), 2062-2064. https://doi.org/10.1049/el.2015.2026