Performance evaluation of distributed measurement-based dynamic channel assignment in local wireless communications

Abstract-This contribution studies the impact of adaptive quadrature amplitude modulation (AQAM) on network performance when applied to a cellular network, using adaptive antennas in conjunction with both fixed channel allocation (FCA) and locally distributed dynamic channel allocation (DCA) schemes. The performance advantages of using adaptive modulation are investigated in terms of the overall network performance, mean transmitted power, and the average network throughput. Adaptive modulation allowed an extra 51% of users to be supported by an FCA 4-QAM network, while in conjunction with DCA, an additional 54% user capacity was attained.

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“…The following performance metrics have been widely used in the literature and were also advocated by [21].…”

Section: A Performance Metricsmentioning

confidence: 99%

Dynamic channel allocation techniques using adaptive modulation and adaptive antennas

Blogh

Cherriman

Hanzo

1999

Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324

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“…The following performance metrics have been widely used in the literature and were also advocated by Chuang [22]:…”

Section: System Components and Performance Metricsmentioning

confidence: 99%

“…• Grade-Of-Service (GOS) was defined by Cheng and Chuang [22] as GOS = P {unsuccessful or LQ call accesses} = P {call is blocked} + P {call is admitted} × P {low signal quality and call is admitted}…”

Section: System Components and Performance Metricsmentioning

confidence: 99%

Adaptive Beamforming and Adaptive Modulation-Assisted Network Performance of Multiuser Detection-Aided FDD and TDD CDMA Systems

Blogh

Hanzo

2007

IEEE Trans. Veh. Technol.

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Abstract-The network performance of a frequency division duplex and time division duplex (TDD) code division multiple access (CDMA)-based system is investigated using system parameters similar to those of the Universal Mobile Telecommunication System. The new call blocking and call dropping probabilities, the probability of low-quality access, and the required average transmit power are quantified both with and without adaptive antenna arrays (AAAs), as well as when subjected to shadow fading. In some of the scenarios investigated, the system's user capacity is doubled with the advent of adaptive antennas. The employment of adaptive modulation techniques in conjunction with AAAs resulted in further significant network capacity gains. This is particularly so in the context of TDD CDMA, where the system's capacity becomes poor without adaptive antennas and adaptive modulation owing to the high base station (BS) to BS interference inflicted as a consequence of potentially using all time slots in both the uplink and downlink of the emerging wireless Internet.Index Terms-Adaptive beamforming, adaptive modulation, code division multiple access (CDMA) systems, Universal Mobile Telecommunication System Terrestrial Radio Access (UTRA), wireless network performance.

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“…To study fixed channel allocation, most authors used graph coloring / labelling techniques (e.g., in [16]), whereas for dynamic channel allocation different solutions were developed (e.g. as presented in [4,17]). For a comprehensive survey on the topic, we refer the reader to [9].…”

Section: Introductionmentioning

confidence: 99%

Multi-radio channel allocation in competitive wireless networks

Félegyházi

Čagalj

Hubaux

2006

26th IEEE International Conference on Distributed Computing Systems Workshops (ICDCSW'06)

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Channel allocation has been extensively studied in the framework of cellular networks, but the emergence of new system concepts, such as cognitive radio systems, bring this topic into the focus of research again. In this paper, we provide a formal analysis of the selfish multi-radio channel allocation problem using game theory. We conclude that in spite of the non-cooperative behavior of such devices, their channel allocation results in a Pareto-and system-optimal solution. Furthermore, we present a simple algorithm to achieve this efficient channel allocation. To the best of our knowledge, our paper is the first contribution to this important topic.

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Performance evaluation of distributed measurement-based dynamic channel assignment in local wireless communications

Cited by 99 publications

References 27 publications

Dynamic channel allocation techniques using adaptive modulation and adaptive antennas

Dynamic channel allocation techniques using adaptive modulation and adaptive antennas

Adaptive Beamforming and Adaptive Modulation-Assisted Network Performance of Multiuser Detection-Aided FDD and TDD CDMA Systems

Multi-radio channel allocation in competitive wireless networks

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