Performance Analysis of Channel Allocation Schemes in Mobile Communication Systems PDF Download

Author: Suann Li
Publisher:
ISBN:
Category :
Languages : en
Pages : 252

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Author: Yihui Tang
Publisher:
ISBN:
Category : Algorithms
Languages : en
Pages : 0

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Book Description
Efficient allocation of radio spectrum becomes increasingly important as the demand for wireless communication has been growing rapidly over the past two decades. Several channel assignment algorithms for increasing channel utilization have been studied. In Fixed Channel Assignment (FCA), channels are permanently allocated to each cell for its exclusive use, whereas in Dynamic Channel Assignment (DCA) the channels are put in a shared pool and dynamically assigned upon request. One example of a DCA scheme is the so-called greedy strategy, where all the channels are kept in a central ordered list and every node uses the first channels which are available. In Fixed Preference Assignment (FPA), each cell has a fixed preference list of all channels and the first available channel in the list will be used to serve an incoming call. In this thesis, we show upper bounds and lower bounds for the competitive ratios of the greedy and FPA strategies for different values of reuse distance. The average case performance analysis of these three schemes is also conducted using computer simulation.

Author: Enrico Del Re
Publisher:
ISBN:
Category :
Languages : en
Pages : 5

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Author: Wuyi Yue
Publisher: Springer Science & Business Media
ISBN: 0306473119
Category : Computers
Languages : en
Pages : 335

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Book Description
With the rapidly increasing penetration of laptop computers and mobile phones, which are primarily used by mobile users to access Internet s- vices like e-mail and World Wide Web (WWW) access, support of Internet services in a mobile environment is an emerging requirement. Wireless n- works have been used for communication among fully distributed users in a multimedia environment that has the needs to provide real-time bursty traffic (such as voice or video) and data traffic with excellent reliability and service quality. To satisfy the huge wireless multimedia service demand and improve the system performance, efficient channel access methods and analytical methods must be provided. In this way very accurate models, that faithfully reproduce the stochastic behavior of multimedia wireless communication and computer networks, can be constructed. Most of these system models are discrete-time queueing systems. Queueing networks and Markov chains are commonly used for the p- formance and reliability evaluation of computer, communication, and m- ufacturing systems. Although there are quite a few books on the individual topics of queueing networks and Markov chains, we have found none that covers the topics of discrete-time and continuous-time multichannel mul- traffic queueing networks. On the other hand, the design and development of multichannel mul- hop network systems and interconnected network systems or integrated n- works of multimedia traffic require not only such average performance m- sures as the throughput or packet delay but also higher moments of traffic departures and transmission delay.

Author: Cheeneebash, Jayrani
Publisher: African Minds
ISBN: 1920677534
Category : Technology & Engineering
Languages : en
Pages : 82

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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.

Author: Milosh Vladimir Ivanovich
Publisher:
ISBN:
Category : Data transmission systems
Languages : en
Pages : 252

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Author: İdil Candan
Publisher:
ISBN:
Category : Mobile communication systems
Languages : en
Pages : 146

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Book Description

Author: Leonid Ponomarenko
Publisher: Springer Science & Business Media
ISBN: 3642154581
Category : Computers
Languages : en
Pages : 204

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Promptly growing demand for telecommunication services and information interchange has led to the fact that communication became one of the most dynamical branches of an infrastructure of a modern society. The book introduces to the bases of classical MDP theory; problems of a finding optimal САС in models are investigated and various problems of improvement of characteristics of traditional and multimedia wireless communication networks are considered together with both classical and new methods of theory MDP which allow defining optimal strategy of access in teletraffic systems. The book will be useful to specialists in the field of telecommunication systems and also to students and post-graduate students of corresponding specialties.

Author: Manoj Shukla
Publisher: GRIN Verlag
ISBN: 3656696489
Category : Computers
Languages : en
Pages : 171

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Book Description
Doctoral Thesis / Dissertation from the year 2011 in the subject Computer Science - Internet, New Technologies, grade: 10.00, , course: Ph.D., language: English, abstract: As per recommendations of International Mobile Telecommunications-2000 (IMT-2000), the future wireless communication is bound to occupy the features including high-speed data and broadband transmission, high capacity to support a huge number of simultaneous users, global mobility, high security, and scalable quality of service (QoS) along with low cost for both operators and subscribers. The above features are imposing technical challenges on system design and stimulating various research topics on capacity, complexity and performance. In order to increase the capacity of wireless networks, various multiple access schemes have been reported in the literature. The credit of most competent multiple access scheme in 2G systems goes to CDMA scheme which offers an even better bandwidth-efficiency than TDMA and FDMA schemes, however, its implementation is quite difficult due to involvement of rather complex technologies including complex power-control, and multiuser detection techniques etc. The requirement of alternate mechanism for user separation has been solved by Interleave-Division Multiple-Access (IDMA) scheme, in which, most of above stated problems do not exist due to application of user-specific interleavers having low cross-correlation amongst them. The interleaved data resulted from user-specific interleavers, demonstrates better orthogonality amongst each other in the channel. The condition of orthogonality is maintained for reducing the risk of collision amongst the interleavers during communication process. In IDMA scheme, orthogonal interleavers are employed as the only means for user separation and, hence, are referred as the heart of the scheme. The selection of interleaver along with optimum design methodology for proposed tree based interleaving (TBI) mechanism for IDMA scheme fulfilling the requirement of orthogonality and easy implementation. In the beginning of work, the mechanism of interleaving with necessary conditions is presented. Later, the performance and analysis of proposed TBI mechanism with IDMA scheme has been presented. Apart from the bit error rate (BER) performance analysis, the interleavers have also been analyzed on the basis of memory requirement and computational complexity at transmitter and receiver ends. Here, The performance evaluation of IDMA scheme with proposed tree based interleaving (TBI) mechanism, in uncoded and coded environments, has been duly investigated along with its implementation.

Author: Jerry D. Gibson
Publisher: CRC Press
ISBN: 0849321670
Category : Technology & Engineering
Languages : en
Pages : 674

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Book Description
On one easy to use CD-ROM, The Mobile Communications Handbook on CD-ROM covers: Principles of analog and digital communication with cordless telephones Wireless local area networks (LANs) International technology standards. Cellular mobile radio Personal communication systems User location and addressing Wireless data and technology standards Its tremendous scope and ease of use makes Mobile Communications on CD-ROM the primary reference for every aspect of mobile communications. Mobile Communications Handbook on CD-ROM is exactly what you need to keep up with this growing and evolving field.