Hybrid LISA Precoding for Multiuser Millimeter-Wave Communications

摘要: Millimeter-wave (mmWave) communications plays an important role for future cellular networks because of the vast amount spectrum available in underutilized mmWave frequency bands. To overcome huge free space omnidirectional path loss those bands, deployment a very large number antenna elements at base station is crucial. The complexity, power consumption and costs resulting from can be reduced by limiting RF chains. This leads to hybrid precoding combining, which, contrast traditional fully digital moves part signal processing analog domain. paper proposes new algorithms design precoders combiners multiuser scenario. are based on previously proposed Linear Successive Allocation method developed version. It successively allocates data streams users suppresses respective interstream interference two stages, which perfectly matches architecture. Furthermore, low-complexity version exploiting typical structure channels. good performance its demonstrated simulation results.