Download or read book Algorithms for Dynamic Channel Assignment written by Robert T. Harrild and published by . This book was released on 1986 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Comprehensive Review of Methods for the Channel Allocation Problem written by Cheeneebash, Jayrani and published by African Minds. This book was released on 2014-12-01 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of the channel allocation problem has received much attention during the last decade. Several techniques such as genetic algorithm, artificial neural network, simulated annealing, tabu search and others have been used. This book is devoted to compiling all the techniques that have been used to solve the channel allocation problem. Each of the methods is described fully in a manner that explains the essential parts of how the techniques are formulated and applied in solving the problem. This textbook will be helpful to students studying communications or researchers as it compiles all the techniques used since this problem was first solved.
Download or read book Dynamic Channel Allocation written by Andrew D. Kaminsky and published by . This book was released on 2003-09-01 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic Channel Allocation (DCA) offers the possibility of capturing unused channel capacity by allocating unused resources between competing network nodes. This can reduce or possibly eliminate channels sitting idle while information awaits transmission. This holds potential for increasing throughput on bandwidth constrained networks. This thesis begins by examining channel allocation techniques currently used. Following this, a solution is proposed that utilizes two types of algorithms to dynamically allocate channels from which a computer simulation is devised. Upon gathering the results, an analysis is conducted and suggestions are given for future work in channel allocation. Chapter II discusses and compares fixed channel allocation with dynamic channel allocation. In addition, some of the algorithms used to achieve channel allocation are explored. This chapter also looks at techniques used, such as inverse multiplexing, time division multiplexed on demand, hybrid channel allocation in wireless networks, and Beowulf Ethernet channel bonding. The background information presented in this chapter gives an indication that channel allocation is still being examined and several implementations are proposed. Chapter III proposes a solution with two scheduling algorithms. One algorithm is a First Come First Serve, which gives all free dynamic channels to the first requesting fixed channel. The other algorithm is a Fair Distribution, which gives a portion of the free dynamic channels to the requesting fixed channels. A computer program is devised that simulates these algorithms, and the methods used in the program classes are described in this chapter. (27 tables, 19 figures, 38 refs.)
Download or read book Dynamic Channel Assignment written by Angel Lozano and published by LAP Lambert Academic Publishing. This book was released on 2009-11 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evolution of mobile wireless communication, triggered by an ever growing need for high capacity and new services, has fueled the interest in finding more efficient ways of managing the system resources. The most important of those resources are radio spectrum and power. Dynamic Channel Assignment (DCA) enables a more efficient use of the spectrum and eliminates the burden of frequency planning. In this monograph, we compare the performance of a number of distributed DCA schemes and propose a novel algorithm well suited to mobility environments. Power, in turn, is both a scarce resource at mobile devices and a constraining factor in systems inherently limited by interference. This has led to the development of a variety of power control (PC) schemes. We quantify the impact of mobility on the performance of PC as well as the degradation associated with imperfect signal and interference estimation. Despite the activity in both the DCA and PC arenas, little had been done to try to effectively integrate them. We investigate the integration of DCA and PC and create a family of integrated algorithms, fully distributed and adaptive, that deliver superior performance.
Download or read book Dynamic Channel Assignment Algorithms in Mobile Cellular Systems written by Wei Weng and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Power control in dynamic channel assignment algorithms for cellular systems written by B. J. B. Fonseca Júnior and published by . This book was released on 1999 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Algorithms for Wireless Networking and Mobile Computing written by Azzedine Boukerche and published by CRC Press. This book was released on 2005-11-28 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Algorithms for Wireless Networking and Mobile Computing focuses on several aspects of mobile computing, particularly algorithmic methods and distributed computing with mobile communications capability. It provides the topics that are crucial for building the foundation for the design and construction of future generations of mobile and wireless networks, including cellular, wireless ad hoc, sensor, and ubiquitous networks. Following an analysis of fundamental algorithms and protocols, the book offers a basic overview of wireless technologies and networks. Other topics include issues related to mobility, aspects of QoS provisioning in wireless networks, future applications, and much more.
Download or read book A Flexible Dynamic Channel Allocation Algorithm for Cellular Mobile Communications Systems written by Takuji Maekawa and published by . This book was released on 1997 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Performance Analysis of Channel Assignment Algorithms in Cellular Networks written by Yihui Tang and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Interference Analysis of and Dynamic Channel Assignment Algorithms in TD CDMA TDD Systems written by Harald Haas and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bounds on the Optimum Performance of Dynamic Channel Assignment Algorithms in 1 dimensional Cellular Radio Systems written by Magnus Frodigh and published by . This book was released on 1992 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Advances in Distributed Dynamic Channel Allocation Algorithms in Mobile Cellular Networks written by Bhargava Lakshmi Ravula and published by . This book was released on 2007 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fuzzy Distributed Dynamic Channel Assignment Algorithms written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Xiii, 122 leaves : ill. ; 30 cm.
Download or read book Methods and Algorithms for Radio Channel Assignment written by Robert Leese and published by . This book was released on 2002 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores the various aspects of current research in channel radio assignment.The collection includes several chapters concerned with developing a sound theoretical framework for channel assignment. Also included are the modelling and efficient solution of network design problems, which are becoming increasingly important in wireless networks. This book illustrates a range of mathematical and computational tools including graph colouring, graph labelling, linear and nonlinear optimization, meta-heuristics, constraint satisfaction and multidisciplinary optimization.
Download or read book Interference Analysis Of and Dynamic Channel Assignment Algorithms In TD CDMA written by Harald Haas and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The radio frequency spectrum for commercial wireless communications has become an expensive commodity. Consequently, radio access techniques are required which enable the efficient exploitation of these resources. This, however, is a difficult task due to an increasing diversity of wireless services. Hence, in order to achieve acceptable spectrum efficiency a flexible air- interface is required. It has been demonstrated that code division multiple access (CDMA) provides flexibility by enabling efficient multi user access in a cellular environment. In addition, time division duplex (TDD) as compared to frequency division duplex (FDD) represents an appropriate method to cater for the asymmetric use of a duplex channel. However, the TDD technique is subject to additional interference mechanisms in particular if neighbouring cells require different rates of asymmetry. If TDD is combined with an interference limited multiple access technique such as CDMA, the additional interference mechanism represents an important issue. This issue poses the question of whether a CDMA/TDD air-interface can be used in a cellular environment. The problems are eased if a hybrid TDMA (time division multiple access) / CDMA interface (TD-CDMA) is used. The reason for this is that the TDMA component adds another degree of freedom which can be utilised to avoid interference. This, however, requires special channel assignment techniques. This thesis analyses cellular CDMA/TDD systems used in indoor environments. A key parameter investigated is the interference in such systems. In the interference analysis a special focus is placed on adjacent channel interference since the jamming entity and victim entity can be in close proximity. The interference analysis shows that co-location of BS's using adjacent channels is not feasible for an adjacent channel protection factor that is less than 40 dB and frame synchronisation errors of more than 10%. Furthermore, it is demonstrated that ideal frame synchronisation does not necessarily yield the highest capacity. As a consequence, a new technique termed 'TS-opposing' is introduced. This method is intended to enable a cellular TD-CDMA/TDD system to apply cell independent channel asymmetry. For this purpose, a centralised DCA is developed. It is found that this algorithm indeed enables neighbouring cells to adopt different rates of asymmetry without a significant capacity loss. Moreover, a decentralised DCA algorithm based on the TS-opposing principle is developed. In this context, a novel TS assignment concept is proposed which reduces the complexity associated with the TS-opposing technique. In addition, the TS assignment plan allows for full spatial coverage. It is shown that the capacity of a TD-CDMA/TDD interface can be greater than the capacity of an equivalent FDD interface. The performance of the decentralised DCA algorithm is limited by the interference in the uplink. Therefore, additional methods which assist in reducing the interference in the uplink are envisaged to further improve the performance of the decentralised DCA algorithm. The exploitation of the TS-opposing technique in two different ways demonstrates that this method can be used to improve the performance of a TD-CDMA/TDD system significantly.
Download or read book The Optimal Channel Assignment for Cellular Networks Using Graph Coloring Algorithms written by Victor Hyeong-Seok Ha and published by . This book was released on 1996 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 2020 International Conference on Information Networking ICOIN written by IEEE Staff and published by . This book was released on 2020-01-07 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ad hoc networks, sensor networks, RFID, cellular networks, cloud computing, CDN, CCN ICN, DTN, Future Internet, Internet, IoT M2M, Multimedia communications, Security, Optical Networks, WBAN WPAN WLAN WMAN WWAN, Social Networks, etc
