title: Energy and Spectrum Efficient Wireless Network Design
author:  Guowang Miao 
description: Covering the fundamental principles and state-of-the-art green cellular technologies, this practical guide provides the tools needed to design MIMO- and OFDM-based wireless networks that are both energy- and spectrum-efficient. Various types of wireless networks, both centralized and distributed, are discussed, and detailed implementation examples are included.
zlib_text: sensors
  Article
  A Cooperative Phase-Steering Technique with On-Off
  Power Control for Spectrum Sharing-Based Wireless
  Sensor Networks
  Sangku Lee ID , Janghyuk Youn ID , Bang Chul Jung∗ ID
  Department of Electronics Engineering, Chungnaqm National University, Daejeon 34134, Korea;
  sklee@o.cnu.ac.kr (S.L.); jhyoon@o.cnu.ac.kr (J.Y.)
  *
  Correspondence: bcjung@cnu.ac.kr; Tel.: +82-42-821-6580
  Received: 2 March 2020; Accepted: 26 March 2020; Published: 30 March 2020
  Abstract: With the growth of the number of Internet of Things (IoT) devices, a wide range of wireless
  sensor networks (WSNs) will be deployed for various applications. In general, WSNs are constrained
  by limitations in spectrum and energy resources. In order to circumvent these technical challenges,
  we propose a novel cooperative phase-steering (CPS) technique with a simple on-off power control
  for generic spectrum sharing-based WSNs, which consists of a single secondary source (SS) node,
  multiple secondary relay (SR) nodes, a sing