Cooperative Diversity: Capacity Bounds and Code Designs - Adaptive Signal Processing in Wireless Communications - page 337

12
Cooperative
Diversity:
Capacity Bounds
and Code Designs

12.1 Introduction .......................................................... 341
12.2 Information-heoretical Model..........................344
12.3 Capacity Bounds ................................................... 347
Coding with Side Information • he Relay
Channel • Capacity Bounds of the Gaussian
Half-Duplex Relay Channel • Receiver
Cooperation • Capacity Bounds of the
Gaussian Full-Duplex Receiver Cooperative
Channel • Transmitter Cooperation • Capacity
Bounds of the Gaussian Full-Duplex Transmitter
Cooperative Channel
12.4 Practical Designs .................................................. 362
12.5 Conclusions............................................................ 367
References .........................................................................368

V. Stankovi ´
University of Strathclyde

Anders Høst-Madsen
University of Hawaii

Zixiang Xiong
Texas A&M University

12.1 Introduction

In this chapter we discuss methods for conveying information in a wireless network
based on cooperation among network nodes. The methods are particulary suitable for
decentralized wireless ad hoc networks where information is transmitted in multihops.
A wireless ad hoc network is a network without infrastructure and centralized control.
It consists of a large number of possibly mobile nodes that communicate with each other
over wireless links. Low cost and simple reconfiguration make ad hoc networks attractive
in both commercial and military applications such as wireless local area network (LAN)
(e.g., IEEE 802.11x) and metropolitan area network (MAN) (e.g., DARPA's GLOMO), home
networks (e.g., HomeRF), device networks (e.g., based on Bluetooth or ZigBee), and sensor
networks (e.g., SmartDust, WINS).