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Communications and Networks, Journal of

Issue 1 • Date March 2006

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Displaying Results 1 - 21 of 21
  • [Front cover]

    Publication Year: 2006 , Page(s): c1
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  • [Front inside cover]

    Publication Year: 2006 , Page(s): c2
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  • Power efficient modulation scheme CDM2-MAP for low complexity and high performance

    Publication Year: 2006 , Page(s): 1 - 7
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (995 KB) |  | HTML iconHTML  

    Quadrature amplitude modulation-spread spectrum (QAM-SS) and code division multiplexing (CDM) are multi-level modulation schemes with high performance but they cause a large peak-average power ratio (PAPR). Therefore, this paper proposes a novel modulation scheme for high-rate transmission which follows a sequence of CDM-mapping-CDM not only to correct the above-mentioned problem but also offer a ... View full abstract»

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  • Double-frequency jitter in chain master-slave clock distribution networks: Comparing topologies

    Publication Year: 2006 , Page(s): 8 - 12
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (574 KB) |  | HTML iconHTML  

    Master-slave (M-S) strategies implemented with chain circuits are the main option in order to distribute clock signals along synchronous networks in several telecommunication and control applications. Here, we study the two types of master-slave chains: Without clock feedback, i.e., one-way master-slave (OWMS) and with clock feedback, i.e., two-way master-slave (TWMS) considering the slave nodes a... View full abstract»

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  • Capacity improvement with dynamic channel assignment and reuse partitioning in cellular systems

    Publication Year: 2006 , Page(s): 13 - 20
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1935 KB) |  | HTML iconHTML  

    In cellular mobile communications, how to achieve optimum system capacity with limited frequency spectrum is one of the main research issues. Many dynamic channel assignment (DCA) schemes have been proposed and studied to allocate the channels more efficiently, thus, the capacity of cellular systems is improved. Reuse partitioning (RP) is another technique to achieve higher capacity by reducing th... View full abstract»

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  • A class of limited sensing random access algorithms with resistance to feedback errors and effective delay control

    Publication Year: 2006 , Page(s): 21 - 27
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (655 KB) |  | HTML iconHTML  

    We present and analyze a class of limited sensing random access algorithms with powerful properties. The algorithms are implementable in wireless mobile environments and their operational properties are simple. Their throughput in the worst case of the limit Poisson user model is 0.4297, while this throughput degrades gracefully in the presence of channel feedback errors. View full abstract»

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  • State-dependent call admission control in hierarchical wireless multiservice networks

    Publication Year: 2006 , Page(s): 28 - 37
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1392 KB) |  | HTML iconHTML  

    State-dependent call admission control (SDCAC) is proposed to make efficient use of scarce wireless resource in a hierarchical wireless network with heterogeneous traffic. With SDCAC, new calls are accepted according to an acceptance probability taking account of not only cell dwell time but also call holding time and system state (i.e., occupied bandwidth). An analytical method is developed to ca... View full abstract»

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  • Effect of synchronization errors on the performance of multicarrier CDMA systems

    Publication Year: 2006 , Page(s): 38 - 48
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (956 KB) |  | HTML iconHTML  

    A synchronous multicarrier (MC) code-division multiple access (CDMA) system using inverse fast Fourier transform (IFFT) and fast Fourier transform (FFT) for the downlink mobile communication system operating in a frequency selective Rayleigh fading channel is analyzed. Both carrier frequency offset and timing offset are considered in the analysis. Bit error rate performance of the system with both... View full abstract»

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  • About the location of base stations for a UMTS system: Analytical study and simulations

    Publication Year: 2006 , Page(s): 49 - 58
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (4774 KB) |  | HTML iconHTML  

    One of the first decisions that a radio network designer must take is the location of base stations and the distance between them in order to give the best coverage to a region and, possibly, to reduce deployment costs. In this paper, the authors give an insight to this matter by presenting a possible solution to a real problem: Planning the base stations layout for a universal mobile telecommunic... View full abstract»

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  • A Bluetooth scatternet reformation algorithm

    Publication Year: 2006 , Page(s): 59 - 69
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1792 KB) |  | HTML iconHTML  

    Bluetooth is reputed as a wireless networking technology supplying ad-hoc networks between digital devices. In particular, Bluetooth scatternet is an essential part of dynamic ad-hoc networks. Yet, there have not been sufficient researches performed on scatternet environment. This paper proposes a scatternet reformation algorithm for ad-hoc networks for instances where some nodes enter or leave th... View full abstract»

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  • Pre-computation based selective probing (PCSP) scheme for distributed quality of service (QoS) routing with imprecise state information

    Publication Year: 2006 , Page(s): 70 - 84
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3117 KB) |  | HTML iconHTML  

    We propose a new distributed QoS routing scheme called pre-computation based selective probing (PCSP). The PCSP scheme is designed to provide an exact solution to the constrained optimization problem with moderate overhead, considering the practical environment where the state information available for the routing decision is not exact. It does not limit the number of probe messages, instead, empl... View full abstract»

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  • On solving the tree-topology design problem for wireless cellular networks

    Publication Year: 2006 , Page(s): 85 - 92
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (462 KB) |  | HTML iconHTML  

    In this paper, we study a wireless cellular network design problem. It consists of selecting the location of the base station controllers and mobile service switching centres, selecting their types, designing the network into a tree-topology, and selecting the link types, while considering the location and the demand of base transceiver stations. We propose a constraint programming model and devel... View full abstract»

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  • A hybrid active queue management for stability and fast adaptation

    Publication Year: 2006 , Page(s): 93 - 105
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1886 KB) |  | HTML iconHTML  

    The domination of the Internet by TCP-based services has spawned many efforts to provide high network utilization with low loss and delay in a simple and scalable manner. Active queue management (AQM) algorithms attempt to achieve these goals by regulating queues at bottleneck links to provide useful feedback to TCP sources. While many AQM algorithms have been proposed, most suffer from instabilit... View full abstract»

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  • Resource allocation in multi-domain networks based on service level specifications

    Publication Year: 2006 , Page(s): 106 - 115
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1257 KB) |  | HTML iconHTML  

    The current trend toward the utilization of the Internet as a common means for the offer of heterogeneous services imposes to address the issues related to end-to-end service assurance in the inter-domain scenario. In this paper, we first present an architecture for service management in networks based on service level specifications (SLS). The architecture is designed to be independent both of th... View full abstract»

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  • A QoS multicast routing optimization algorithm based on genetic algorithm

    Publication Year: 2006 , Page(s): 116 - 122
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1064 KB) |  | HTML iconHTML  

    Most of the multimedia applications require strict quality of service (QoS) guarantee during the communication between a single source and multiple destinations. This gives rise to the need for an efficient QoS multicast routing strategy. Determination of such QoS-based optimal multicast routes basically leads to a multi-objective optimization problem, which is computationally intractable in polyn... View full abstract»

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  • A heuristic algorithm for designing near-optimal mobile agent itineraries

    Publication Year: 2006 , Page(s): 123 - 131
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1564 KB) |  | HTML iconHTML  

    Several distributed architectures, incorporating mobile agent technology, have been recently proposed to answer the scalability limitations of their centralized counterparts. However, these architectures fail to address scalability problems, when distributed tasks requiring the employment of itinerant agents is considered. This is because they lack mechanisms that guarantee optimization of agents'... View full abstract»

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  • Call for papers

    Publication Year: 2006 , Page(s): 1
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  • Call for papers

    Publication Year: 2006 , Page(s): 1
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    Freely Available from IEEE
  • [Advertisement]

    Publication Year: 2006 , Page(s): 1
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    Freely Available from IEEE
  • Journal of Communications and Networks (JCN)

    Publication Year: 2006 , Page(s): c3
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  • [Back cover]

    Publication Year: 2006 , Page(s): c4
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Aims & Scope

The Journal of Communications and Networks is published six times per year, and is committed to publishing high-quality papers that advance the state-of-the-art and practical applications of communications and information networks.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
H. Vincent Poor
Princeton University