Design and Analysis of Wireless Systems using CAC and M-QAM Adaptive Modulation for Throughput Improvement

In this paper we introduce an effective bandwidth- based Call Admission Control (CAC) with adaptive modulation technique to manage the traffic in a wireless IP-based network. Since the next generation of communication networks will carry different classes of traffic, e.g., voice, video, fax, data and multimedia, over the same network and these different classes of traffic usually require different quality-of-service (QoS) requirements, the CAC plays an important role in future networks. Furthermore, to enhance the throughput in future wireless communication and efficiently use of the physical resources of the network, we take the advantage of using adaptive modulation M-QAM in order to match transmission rates to time-varying channel conditions. The simulation results show the performance of the proposed architecture.

[1]  Surinder Kumar,et al.  Characterization of adaptive modulators in fixed wireless ATM networks , 2004, Journal of Communications and Networks.

[2]  Murad S. Taqqu,et al.  On the Self-Similar Nature of Ethernet Traffic , 1993, SIGCOMM.

[3]  Andrea J. Goldsmith,et al.  Degrees of freedom in adaptive modulation: a unified view , 2001, IEEE Trans. Commun..

[4]  Dapeng Wu,et al.  Effective capacity: a wireless link model for support of quality of service , 2003, IEEE Trans. Wirel. Commun..

[5]  Nilo Casimiro Ericsson,et al.  Adaptive modulation and scheduling of IP traffic over fading channels , 1999, Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324).

[6]  Andrea J. Goldsmith,et al.  Variable-rate variable-power MQAM for fading channels , 1997, IEEE Trans. Commun..

[7]  Mark W. Garrett,et al.  Modeling and generation of self-similar vbr video traffic , 1994, SIGCOMM 1994.

[8]  J. Karaoguz,et al.  High-rate wireless personal area networks , 2001, IEEE Commun. Mag..

[9]  D. Everitt,et al.  Effective bandwidth-based admission control for multiservice CDMA cellular networks , 1999 .

[10]  Surinder Kumar,et al.  Characterization of effective bandwidth as a metric of quality of service for wired and wireless ATM networks , 1997, Proceedings of ICC'97 - International Conference on Communications.

[11]  SungKee Noh,et al.  New call admission control mechanisms considering adaptive modulation control , 2006, 2006 8th International Conference Advanced Communication Technology.

[12]  Mohamed-Slim Alouini,et al.  Adaptive Modulation over Nakagami Fading Channels , 2000, Wirel. Pers. Commun..

[13]  Georgios B. Giannakis,et al.  Queuing with adaptive modulation and coding over wireless links: cross-Layer analysis and design , 2005, IEEE Transactions on Wireless Communications.

[14]  Walter Willinger,et al.  On the self-similar nature of Ethernet traffic , 1993, SIGCOMM '93.

[15]  Walter Willinger,et al.  Analysis, modeling and generation of self-similar VBR video traffic , 1994, SIGCOMM.

[16]  Georgios B. Giannakis,et al.  Cross-Layer combining of adaptive Modulation and coding with truncated ARQ over wireless links , 2004, IEEE Transactions on Wireless Communications.

[17]  Walter Willinger,et al.  Long-range dependence in variable-bit-rate video traffic , 1995, IEEE Trans. Commun..

[18]  Mohsen Guizani,et al.  Cross-layer-based modeling for quality of service guarantees in mobile wireless networks , 2006, IEEE Communications Magazine.