Research Article
Energy-Efficient Hybrid Precoding for Millimeter Wave MIMO Systems
@INPROCEEDINGS{10.4108/eai.15-8-2015.2260591, author={Chunhua Ma and Cunhua Pan and Yijin Pan and Xiaoqing Han and Ming Chen}, title={Energy-Efficient Hybrid Precoding for Millimeter Wave MIMO Systems}, proceedings={10th EAI International Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2015}, month={9}, keywords={energy efficient hybrid precoder millimeter wave omp-based algorithm}, doi={10.4108/eai.15-8-2015.2260591} }- Chunhua Ma
Cunhua Pan
Yijin Pan
Xiaoqing Han
Ming Chen
Year: 2015
Energy-Efficient Hybrid Precoding for Millimeter Wave MIMO Systems
CHINACOM
IEEE
DOI: 10.4108/eai.15-8-2015.2260591
Abstract
In this paper, we investigate energy-efficient hybrid precoding for the Millimeter Wave (mmWave) multi-input multi-output (MIMO) systems. The considered multivariate optimization problem is hard to tackle because of the non-convex objective function and constraints. To solve the intractable problem, we propose a two-step optimization algorithm to obtain a near-optimal solution. The original multivariate optimization problem is first transformed into an equivalent univariate optimization problem whose solution is a optimal single precoder. Then, by minimizing the Euclidean distance between the optimal single precoder and the hybrid precoder, a near-optimal hybrid precoder are obtained via orthogonal matching pursuit (OMP) based algorithm. Numerical results validate that the energy efficiency (EE) performance of the proposed hybrid precoding algorithm is approximating to the optimality, and it obviously outperforms the spectral efficient hybrid precoding algorithm at the middle-high transmit power. In addition, we show the impacts of different system parameters on the energy-efficient performance.