A Novel Hybrid Precoding Technique for Millimeter Wave

Abstract

Millimeter wave (mmWave) signals undergo high order of path loss than the microwave signals and all cellular systems currently used in most wireless systems. We face many problems regarding high cost, high power consumption and low SNR of signal transmission due to various losses in mmWave communication. Hence to improve the quality of signal one should use effective and efficient techniques. As for mmWave, frequency spectrum availability is too high which is completely unoccupied. Hence mmWave systems should use large antenna arrays so that low wavelength can be obtained. It decreases path loss with improvement in beam forming gain. To use multiple data stream with beamforming is called precoding. Analog precoding is very useful in RF domain. But due to hardware complexity it is not used for MIMO system. Thus precoders and combiners are used at transmitter and receiver respectively. Zero forcing algorithms can be used to reduce the interference in system. Hybrid precoding technique is essential solution for improving spectral efficiency in mmWave. This paper describes a novel hybrid precoding technique using to improve spectral efficiency of mmWave system. Further for simulation of novel hybrid precoding, we will plot the graph using MATLAB tool and will observe improvement in spectral efficiency compared to analog precoding and ZF hybrid precoding.