Performance Evaluation of VoIP Traffic over the IEEE 802.16e Protocol with Different Modulation and Coding Schemes

• Autorzy: Ortiz L. , Rangel V. , Gomez J. , Aquino R. , Lopez-Guerrero M.

Warianty tytułu

PL

Działanie protokołu IEEE 802.16e przy dużej ilości użytkowników VoIP – zagadnienie schematów modulacji i kodowania

• Języki publikacji: EN

Abstrakty

EN

Supporting as many Voice-over-IP (VoIP) users as possible in a Broadband Wireless Access network using limited radio resources is a critical issue. However, performance of VoIP services is affected by several parameters defined in the IEEE 802.16e protocol. In this paper we developed a theoretical model and an algorithm to evaluate the performance of some of the most important VoIP codecs. Simulation results validate the theoretical model to achieve the maximum number of VoIP streams for different configurations of an IEEE 802.16e system.

PL

W artykule przedstawiono model oraz algorytm działania, służące do oceny jakości pracy niektórych z najważniejszych codec’ów dla bramek VoIP przy obsłudze dużej ilości użytkowników. Badania symulacyjne potwierdziły skuteczność działania modelu, w celu osiągnięcia maksymalnej ilości strumieni VoIP przy różnych konfiguracjach systemu IEEE 802.16e.

Słowa kluczowe

EN

Mobile WiMAX; VoIP; performance evaluation

PL

Mobile WiMAX; VoIP; ocena działania

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2013
• Tom: R. 89, nr 2b
• Strony: 180--186
• Opis fizyczny: Bibliogr. 17 poz., rys., tab., wykr.

Twórcy

autor

Ortiz L.

• National Autonomous University of Mexico

autor

Rangel V.

• National Autonomous University of Mexico

autor

Gomez J.

• National Autonomous University of Mexico

autor

Aquino R.

• University of Colima

autor

Lopez-Guerrero M.

• Metropolitan Autonomous University

Bibliografia

• [1] IEEE 802.16e-2005, IEEE Standard for Local and Metropolitan Area Networks - Part 16: Air Interface for Fixed BWA Systems, Amendment for PHY and MAC for Combined Fixed and Mobile Operation in Licensed Bands, IEEE, Dec. 2005.
• [2] JaeWoo S., A Downlink Performance Analysis of VoIP Services over an IEEE 802.16e OFDMA System, IEEE Communications Letters, Feb. 2007.
• [3] JaeWoo S., Performance Analysis of a Semi-Fixed Mapping Scheme for VoIP Services in Wireless OFDMA Systems, Fifth International Conference on Wireless Mobile Communications, Oct. 2009.
• [4] Jae-Woo S., Performance Analysis of VoIP Services in the IEEE 802.16e OFDMA System with Inband Signaling, IEEE Transactions on Vehicular Technology, May 2008.
• [5] Kaarthick B., Yeshwenth V. J., Nagarajan N., Rajeev, Investigating the performance of various vocoders for fair scheduling algorithm in WiMAX, First Asian Himalayas International Conference, Nov. 2009.
• [6] Howon L., Hyu-Dae K., Dong-Ho C., Extended-rtPS+ Considering Characteristics of VoIP Codecs in Mobile WiMAX, IEEE International Symposium on PIMRC, Dec. 2008.
• [7] Ortiz L., Rangel V., Gomez J., R. A. Santos R.A., Lopez- Guerrero M., Performance optimization of mobile WiMAX netwoks for VoIP stream, Proceedings of KTTO´2011, Bielsko- Biala, Poland, 22-24 June 2011.
• [8] Rangel V. Performance Evaluation and Optimisation of the DVB/DAVIC Cable Modem Protocol (Phd. thesis), University of Sheffield, Jun. 2002.
• [9] ETSI ES 200 800 v.1.3.1. Digital Video Broadcasting: Interaction Channel for Cable TV Distribution Systems (CATV), ETSI, Oct. 2001.
• [10] Casner S., Jacobson V., RFC2508 - Compressing IP/UDP/RTP Headers for Low-Speed Serial L, Cisco Systems, Feb. 1999.
• [11] ITU-T Rec. G.711, Pulse Code Modulation (PCM) of Voice Frequencies, ITU-T, Nov. 1988.
• [12] ITU-T Rec. H.323, Packet-Based Multimedia Communications Systems, ITU-T, Dec. 2009.
• [13] ITU-T Rec. G.723.1, Dual Rate Speech Coder for Multimedia Communications Transmitting at 5.3 and 6.3 kbit/s, ITU-T, May. 2006.
• [14] ITU-T Rec. G.726, 40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code Modulation (ADPCM), ITU-T, Dec. 1990.
• [15] ITU-T Rec. G.728, Coding of Spech at 16 kbit/s Using Low- Delay Code Excited Linear Prediction, ITU-T, Sep. 1992.
• [16] ITU-T Rec. G.729, Coding of Speech at 8 kbit/s Using Conjugate-Structure Algebraic-Code-Excited Linear Prediction (CS-ACELP), ITU-T, Jan. 2007.
• [17]PacketCable, PacketCable™ Audio/Video Codecs Specification, CableLabs, PacketCable Project, Dec. 2001.