A novel vector perturbation based on joint transceiver algorithm in cooperative mu-MIMO

摘要: In this paper we attend to introduce a novel nonlinear vector perturbation approach improve qualification of communications in downlink multi user Multi-Input Multi-Output systems where base stations work together cooperatively. algorithm, based on lattice reduction and VBLAST algorithms is applied at the stations, whereas linear receiver processing modulo operation are each mobile. It shown that proposed algorithm effectively decomposes multiuser MIMO channel into parallel independent single-user channels, then, performance mobile can be separately optimized. When used with multiple-antenna mobiles, achieves significantly better than ZFcriterion-based preprocessing designed for single-antenna because it utilizes capabilities mobiles. This method comparable THP also has outperformance rather types such as block diagonalization conservation energy specify constraint. Moreover, much higher sum capacity high signal-to-noise ratio (SNR) known technique due effective application transmitter. Also propose some methods achieve system by suitably ordering matrices different