Spatial modulation detection schemes based on lattice reduction algorithm

Abstract:

Spatial modulation is one of the alternative physical layer technologies in 5G cellular communication system. To study the influence of LLL algorithm and augmented lattice reduction on the bit error rate and computational complexity of spatial modulation, two schemes are proposed, which are called LLL aided MMSE detection scheme and augment detection scheme. With different modulation symbols and different antenna numbers, the error rate of the two detection schemes is compared by simulation. Then, the computational complexity of the two detection schemes is compared by the matrix operation analysis. To make the analysis result more intuitive, the simulation with different antenna numbers is executed. Theoretical analysis and simulation results show that in the aspect of bit error rate and computational complexity, the augment detection scheme excels the LLL aided MMSE detection scheme. Therefore, the augment detection scheme is more suitable for spatial modulation technology.