Fundamentals of queueing theory (2nd ed.).
Fundamentals of queueing theory (2nd ed.).
Hyper-Erlang distribution model and its application in wireless mobille networks
Wireless Networks - Special issue: Design and modeling in mobile and wireless systsems
Theory, Volume 1, Queueing Systems
Theory, Volume 1, Queueing Systems
MIMO-OFDM wireless systems: basics, perspectives, and challenges
IEEE Wireless Communications
The OFDM-IDMA approach to wireless communication systems
IEEE Wireless Communications
IEEE Transactions on Wireless Communications
Broadband wireless access solutions based on OFDM access in IEEE 802.16
IEEE Communications Magazine
A MIMO-OFDM prototype for next-generation wireless WANs
IEEE Communications Magazine
A tutorial on multiple access technologies for beyond 3G mobile networks
IEEE Communications Magazine
Multiuser OFDM with adaptive subcarrier, bit, and power allocation
IEEE Journal on Selected Areas in Communications
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Orthogonal frequency division multiplexing (OFDM) is becoming a fundamental technology in future generation wireless communications. Call admission control is an effective mechanism to guarantee resilient, efficient, and quality-of-service (QoS) services in wireless mobile networks. In this paper, we present several call admission control algorithms for OFDM-based wireless multiservice networks. Call connection requests are differentiated into narrow-band calls and wide-band calls. For either class of calls, the traffic process is characterized as batch arrival since each call may request multiple subcarriers to satisfy its QoS requirement. The batch size is a random variable following a probability mass function (PMF) with realistically maximum value. In addition, the service times for wide-band and narrow-band calls are different. Following this, we perform a tele-traffic queueing analysis for OFDM-based wireless multiservice networks. The formulae for the significant performance metrics call blocking probability and bandwidth utilization are developed. Numerical investigations are presented to demonstrate the interaction between key parameters and performance metrics. The performance tradeoff among different call admission control algorithms is discussed. Moreover, the analytical model has been validated by simulation. The methodology as well as the result provides an efficient tool for planning next-generation OFDM-based broadband wireless access systems.