Modeling and Computer Simulation (TOMACS)


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ACM Transactions on Modeling and Computer Simulation (TOMACS), Volume 21 Issue 1, December 2010

Guest editors' introduction: Special issue on modeling and simulation of cross-layer interactions in communication networks
Michael Devetsikiotis, Fabrizio Granelli
Article No.: 1
DOI: 10.1145/1870085.1870086

Steepest-ascent constrained simultaneous perturbation for multiobjective optimization
Daniel W. McClary, Violet R. Syrotiuk, Murat Kulahci
Article No.: 2
DOI: 10.1145/1870085.1870087

The simultaneous optimization of multiple responses in a dynamic system is challenging. When a response has a known gradient, it is often easily improved along the path of steepest ascent. On the contrary, a stochastic approximation technique may...

Optimal scheduling in high-speed downlink packet access networks
Hussein Al-Zubaidy, Ioannis Lambadaris, Jerome Talim
Article No.: 3
DOI: 10.1145/1870085.1870088

We present an analytic model and a methodology to determine the optimal packet scheduling policy in a High-Speed Downlink Packet Access (HSDPA) system. The optimal policy is the one that maximizes cell throughput while maintaining a level of...

Cross-layer interactions in multihop wireless sensor networks: A constrained queueing model
Yang Song, Yuguang Fang
Article No.: 4
DOI: 10.1145/1870085.1870089

In this article, we propose a constrained queueing model to investigate the performance of multihop wireless sensor networks. Specifically, the cross-layer interactions of rate admission control, traffic engineering, dynamic routing, and adaptive...

Joint congestion control and distributed scheduling for throughput guarantees in wireless networks
Gaurav Sharma, Changhee Joo, Ness B. Shroff, Ravi R. Mazumdar
Article No.: 5
DOI: 10.1145/1870085.1870090

We consider the problem of throughput-optimal cross-layer design of wireless networks. We propose a joint congestion control and scheduling algorithm that achieves a fraction 1/dI(G) of the capacity region, where...

A theoretical framework for interaction measure and sensitivity analysis in cross-layer design
Dalei Wu, Song Ci, Haiyan Luo, Hai-Feng Guo
Article No.: 6
DOI: 10.1145/1870085.1870091

Cross-layer design has become one of the most effective and efficient methods to provide Quality of Service (QoS) over various communication networks, especially over wireless multimedia networks. However, current research on cross-layer design...

Modeling the interactions between MAC and higher layer: A systematic approach to generate high-level scenarios from MAC-layer scenarios
Shamim Begum, Ahmed Helmy, Sandeep Gupta
Article No.: 7
DOI: 10.1145/1870085.1870092

We propose a new framework for worst-case performance evaluation of MAC protocols for wireless ad hoc networks. Given a protocol, its performance metrics and a network topology, our framework first generates MAC scenarios which achieve poor...

Cross-layer design for efficient resource utilization in wimedia UWB-based WPANs
Raed Al-Zubi, Marwan Krunz
Article No.: 8
DOI: 10.1145/1870085.1870093

Ultra-WideBand (UWB) communications has emerged as a promising technology for high data rate Wireless Personal Area Networks (WPANs). In this article, we address two key issues that impact the performance of a multihop UWB-based WPAN: throughput...