Measuring the Quality of VoIP Traffic on a WiMAX Testbed

Scalabrino, Nicola; Pellegrini, Francesco De; Riggio, Roberto; Maestrini, A.; Costa, Cristina; Chlamtac, I.

doi:10.1109/tridentcom.2007.4444719

Cited by 15 publications

(9 citation statements)

References 13 publications

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“…Pioneering and closely related work to ours has been recently published by Scalabrino et al [21,22]. They report results from a fixed WiMAX testbed in Turin, Italy.…”

Section: Related Workmentioning

confidence: 74%

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Empirical Evaluation of VoIP Aggregation over a Fixed WiMAX Testbed

Pentikousis¹,

Piri²,

Pinola³

et al. 2008

Proceedings of the 4th International ICST Conference on Testbeds and Research Infrastructures for the Development of Networks A

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The WiMAX Reference Network Architecture can be used in point-to-point and point-to-multipoint network topologies, and is suitable for providing last-mile, building-to-building, and residential broadband connectivity. Another major application, and the main focus of this study, is the use of fixed WiMAX as backhaul for voice and data services. We evaluate voice over IP (VoIP) performance over a fixed WiMAX testbed and quantify the benefits from employing applicationand network-level aggregation. We examine such aggregation schemes using our fixed WiMAX testbed and report the results for both uplink and downlink. If we use objective mean opinion scores (MOS) as the main gauge of overall performance, application-layer aggregation appears to be the best scheme, allowing our fixed WiMAX testbed to sustain nearly three times more flows in the downlink and over two times more flows in the uplink than when no aggregation is used, at comparable MOS values.

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“…Pioneering and closely related work to ours has been recently published by Scalabrino et al [21,22]. They report results from a fixed WiMAX testbed in Turin, Italy.…”

Section: Related Workmentioning

confidence: 74%

“…In addition, due to the limited CIR, their results involve an order of magnitude fewer flows than in our evaluation. Finally, the benefits of VoIP aggregation are not studied in [21,22].…”

Section: Related Workmentioning

confidence: 99%

Empirical Evaluation of VoIP Aggregation over a Fixed WiMAX Testbed

Pentikousis¹,

Piri²,

Pinola³

et al. 2008

Proceedings of the 4th International ICST Conference on Testbeds and Research Infrastructures for the Development of Networks A

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show abstract

“…Additionally to simulations, a few testbed measurements and field trials have been carried out [38][39][40][41][42][43][44][45][46][47]. The results of such field trials are usually throughput values for a specific receive signal strength.…”

Section: A On Antenna Spacingmentioning

confidence: 99%

Measuring the influence of TX antenna spacing and transmit power on the closed-loop throughput of IEEE 802.16-2004 WiMAX

Caban

Garcia-Nayaz

Castedo

et al. 2010

2010 IEEE Instrumentation &Amp; Measurement Technology Conference Proceedings

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The impact of transmit-antenna spacing and signal-to-noiseratio on channel capacity has been measured intensively in a variety of scenarios. When looking at the physical layer throughput of a multiantenna communication system, the behavior over antenna spacing may look completely different, leading to other conclusions regarding the optimal antenna distance.In this paper, we compare -by testbed measurements-the closedloop throughput of a standard compliant 2×2 IEEE 802.16-2004 WiMAX radio link with the unconstrained capacity and the mutual information of the channel. Results are presented for base-station antenna spacings of 0 wavelengths (cross polarization) as well as spacings between 0.6 wavelengths and 7.7 wavelengths (equal polarization).

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“…In contrast to [1][2][3][4][5][6][7][8], in [9] Single Input Single Output (SISO) simulation results are presented in terms of physical layer data throughput including link adaptation. In addition to simulations, a few testbed measurements and field trials have been carried out [10][11][12][13][14][15][16]. Typically, the results of field trials are throughput values given at a specific receive signal strength.…”

Section: Introductionmentioning

confidence: 99%

Throughput and capacity of MIMO WiMAX

Mehlführer¹,

Caban²,

García-Naya

et al. 2009

2009 Conference Record of the Forty-Third Asilomar Conference on Signals, Systems and Computers

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Abstract-In this work, we present physical layer throughput measurement results of a WiMAX link implemented according to IEEE 802.16-2004. The measurements were carried out in an alpine and an urban scenario using the Vienna MIMO Testbed. We compare the measured throughput to three different theoretical bounds: 1) the channel capacity, 2) the mutual information, and 3) a so-called "achievable throughput" which takes inherent system losses into account. Furthermore, the impact of different channel codes and channel estimators on the measured throughput is analyzed.

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Measuring the Quality of VoIP Traffic on a WiMAX Testbed

Cited by 15 publications

References 13 publications

Empirical Evaluation of VoIP Aggregation over a Fixed WiMAX Testbed

Empirical Evaluation of VoIP Aggregation over a Fixed WiMAX Testbed

Measuring the influence of TX antenna spacing and transmit power on the closed-loop throughput of IEEE 802.16-2004 WiMAX

Throughput and capacity of MIMO WiMAX

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