Wireless Ad Hoc Networks With Receiver Multipacket Reception Performance Analysis And Signal Processing
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Wireless Ad-Hoc Networks with Receiver Multipacket Reception: Performance Analysis and Signal Processing
The aim of this research is to develop new theory and techniques that significantly improve performance of ad hoc networks by advanced signal processing and medium access control (MAC). In particular, we are interested in signal processing algorithms that are capable of separating signals from multiple users therefore provide multipacket reception (MPR) at the receiver, and MAC protocols that take advantage of the MPR capability of the physical layer. During the reporting period, we investigated signal processing techniques with efficient implementation to strengthen the multiuser physical layer of ad hoc networks. We have extended our previous results to wireless sensor networks for which we considered the problem estimating the number of operating sensors and energy distribution. We also considered the problem of reconstructing random signal field using data samples collected from the sensor field. Blind and semi-blind channel estimation and symbol detection algorithms are developed for long code wide-band CDMA systems including systems with multirate and multicode transmissions. A new identifiability condition is established which suggests that channels unidentifiable in short code CDMA systems are almost surely identifiable when aperiodic spreading codes are used. Applications in large scale sensor networks are also considered.
UV Light Self Organizing Network Theory
This book covers the basic concepts of UV communication, the analysis of UV channel characteristics, the organize media access protocols, and routing protocols, etc. in the network. Based on the analysis of classical communication protocols, a basic framework for UV self-organising networks is proposed. The communication protocol proposed in the book is analyzed in detail, and the key procedures of computer simulation are given at the end of the book so that readers can learn and understand. This book can guide senior undergraduate and postgraduate students of communications, networking, and other related majors in colleges and universities. It can also be used as a reference book for researchers and engineering technicians.
Wireless Networks: Multiuser Detection in Cross-Layer Design
Author: Christina Comaniciu
language: en
Publisher: Springer Science & Business Media
Release Date: 2006-06-14
Cross-layer design seeks to enhance the capacity of wireless networks significantly through the joint optimization of multiple layers in the network, primarily the physical (PHY) and medium access control (MAC) layers. Although there are advantages of such design in wireline networks as well, this approach is particularly advantageous for wireless networks due to the properties (such as mobility and interference) that strongly affect performance and design of higher layer protocols. This unique monograph is concerned with the issue of cross-layer design in wireless networks, and more particularly with the impact of node-level multiuser detection on such design. It provides an introduction to this vibrant and active research area insufficiently covered in existing literature, presenting some of the principal methods developed and results obtained to date. Accompanied by numerous illustrations, the text is an excellent reference for engineers, researchers and students working in communication networks.