
CHAPTER 8
REACT: Residual
Energy-Aware
Cooperative
Transmissions
Erwu Liu, Rui Wang, Chao Wang, Xinlin Huang, and Fuqiang Liu,
Tongji University, China
8.1 INTRODUCTION
Energy efficiency and spectrum efficiency are two critical issues in wire-
less communications. Previously, much effort has been on efficient use of
the spectrum via various technologies such as compressive sensing and spec-
trum sensing [42]. On the other hand, a battery-operated wireless network
must operate in an energy conservation manner s o as to extend the lifetime of
the network. Particularly in the development of the Internet of Things (IoT),
energy efficiency is becoming equally or