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4G femtocells : resource allocation and interference management
Zhang H., Chu X., Wen X., Springer Publishing Company, Incorporated, New York, NY, 2013. 90 pp. Type: Book (978-1-461490-79-1)
Date Reviewed: Apr 22 2014

Femtocells are inexpensive base stations with short range and low power. A femtocell network requires a scalable architecture for the transportation of Internet protocol (IP) packets. The possibility of self-organization is very important for femtocells because the operators require customer networks to install and operate the equipment, but the radio conditions and interactions with other cells are very complex. Fourth-generation (4G) Femtocell technology development involves the consideration of technical and commercial issues of wide interest: radio interference, security, interoperability, service-level agreements (SLAs), business models, and resource allocation. This book provides answers to some of these issues based on original, highly scientific work. Researchers and academics will find it useful.

The book is divided into seven chapters, each including extensive references. The first chapter contains an introduction to 4G femtocells, including discussions of resource considerations, inference allocation, and management, with challenges and research issues. The benefits of 4G femtocells to operators, such as reducing operational expenditure (OPEX) and capital expenditure (CAPEX), increasing indoor coverage, providing innovative data services for mobile terminals, fixed mobile convergence (FMC), and subscriber growth, are discussed. Benefits to users are also discussed: better coverage, inexpensive voice services, and the same level of service inside and outside.

Chapter 2, “Ant Colony Algorithm (ACA) Based Downlink Resource Allocation in Femtocells,” is focused on downlink resource allocation in femtocells. The authors propose several subchannel algorithms: maximizing capacity with modified ACA-based fairness (ACA-MF), ACA-based maximizing capacity with further fairness (ACA-FF), and ACA-based maximizing capacity (ACA-MC). A comparison of the capacity of the performance of these algorithms is made in relation to the round-robin (RR) algorithm.

Increased indoor coverage is an advantage of femtocell technology. Uplink power and subchannel allocation problems related to orthogonal frequency division multiple access (OFDMA) are well-modeled subjects that are implemented and simulated in chapter 3. In this chapter, the authors propose a semi-distributed resource allocation interference-aware algorithm for the uplink of co-channel deployed femtocells based on a non-cooperative game framework.

“Resource Allocation for Femtocells with Cross-Tier Interference Limits” is the title of chapter 4. First, a model of the system is presented, considering a two-tier OFDMA network and the problem formulation for the uplink and downlink. The proposed resource allocation algorithms are presented and analyzed, taking into account the transformation of an optimization problem with time-sharing using Lagrangian relaxation and dual decomposition. The simulation results indicate the algorithm proposed by the authors is more efficient than cutting-edge algorithms described elsewhere in the literature.

In chapter 5, the authors propose the energy-aware uplink power control scheme for two-tier femtocell networks based on non-cooperative games. The authors present two new algorithms: a non-cooperative power control game with convex pricing (NPG-CP) and a distributed power control algorithm that is based on NPG-CP. Following the simulations, a performance assessment suggests that they have high efficiency compared with existing power allocation algorithms.

The problem of uplink power allocation in densely deployed femtocells is addressed in chapter 6. The dynamic power allocation algorithm proposed by the authors is based on theoretical foundations such as game theory, specifically with a differentiated pricing game model. The simulation results indicate a number of superior features compared to existing modified iterative water filling (MIWF)-based power allocation algorithms.

Chapter 7 is devoted to conclusions and future work. It succinctly describes the theoretical results verified by simulations obtained in other chapters.

This book presents a series of problems formulated on the basis of system models. It is theoretically well founded and includes simulation results. Along with the references indicated, each chapter of the book serves as a starting point for the development of research in 4G femtocells. Students and researchers in this field will find the book useful for future work.

Reviewer:  Eugen Petac Review #: CR142202 (1407-0495)
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Signal Processing Systems (C.3 ... )
 
 
Data Communications (C.2.0 ... )
 
 
Wireless Communication (C.2.1 ... )
 
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