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  Partner: UNT College of Engineering
 Collection: UNT Scholarly Works
Throughput Optimization in Multi-Cell CDMA Networks

Throughput Optimization in Multi-Cell CDMA Networks

Date: March 2005
Creator: Akl, Robert G.; Naraghi-Pour, Mort & Hegde, Manju V.
Description: In this paper, the authors investigate the performance of a multi-cell CDMA network by determining the maximum throughput that the network can archive for a given grade-of-service requirement, quality-of-service requirement, network topology and call arrival rate profile. The analysis is restricted to the reverse link and accounts for mobility of users between cell. A constrained nonlinear optimization problem is formulated that maximizes the network throughput subject to upper bounds on the blocking probabilities and a lower bound on the bit energy to interference ratio. The goal is to optimize the usage of network resources, provide consistent grade-of-service for all the cells in the network, and maintain a pre-specified quality-of-service. The solution to the optimization problem yields the maximum network throughput as well as the maximum number of calls that should be admitted in each cell for a given topology and call arrival rate profile. Our optimization algorithm yields significantly higher throughput compared with traditional call admission schemes.
Contributing Partner: UNT College of Engineering
Throughput Validation of an Advanced Channel Assignment Algorithm in IEEE 802.11 WLAN

Throughput Validation of an Advanced Channel Assignment Algorithm in IEEE 802.11 WLAN

Date: February 2009
Creator: Haidar, Mohamad; Al-Rizzo, Hussain Mudhaffar Younis, 1957-; Chan, Yupo; Akl, Robert G. & Bouharras, Mohamad
Description: In this article, an enhanced channel-assignment algorithm at the Access Points (APs) of a Wireless Local Area Network (WLAN) is validated. The algorithm aims to maximize the Signal-to-Interference Ratio (SIR) at the user level in order to determine the appropriate channel at the APs. The initial channel assignment step at the APs is based on minimizing the total interference between APs. Based on this initial assignment, the SIR for each user is calculated. Then, another channel assignment is performed based on maximizing the SIR at the users. The algorithm can be applied to any WLAN, irrespective of the user distribution and user load. Results show that the algorithm is capable of significantly increasing the SIR over the WLAN, which in turn should improve throughput. Therefore, the authors use OPNET simulation tool to construct several realistic scenarios in order to validate our results.
Contributing Partner: UNT College of Engineering
Approximating User Distributions in WCDMA Networks Using 2-D Gaussian

Approximating User Distributions in WCDMA Networks Using 2-D Gaussian

Date: July 2005
Creator: Nguyen, Son & Akl, Robert G.
Description: This paper discusses approximating user distributions in WCDMA networks using 2-D Gaussian.
Contributing Partner: UNT College of Engineering
The Effect of an Enhanced Channel Assignment Algorithm on an IEEE 802.11 WLAN

The Effect of an Enhanced Channel Assignment Algorithm on an IEEE 802.11 WLAN

Date: December 2009
Creator: Haidar, Mohamad; Al-Rizzo, Hussain Mudhaffar Younis, 1957-; Akl, Robert G. & El-Bazzal, Zouhair
Description: This article discusses the effect of an enhanced channel assignment algorithm on an IEEE 802.11 WLAN.
Contributing Partner: UNT College of Engineering
Effects of Interference on Capacity in Multi-Cell CDMA Networks

Effects of Interference on Capacity in Multi-Cell CDMA Networks

Date: March 2005
Creator: Akl, Robert G.; Parvez, Asad & Nguyen, Son
Description: This article discusses the effects of interference on capacity in multi-cell CDMA networks.
Contributing Partner: UNT College of Engineering
An Efficient Non-Preemptive Real-Time Scheduling

An Efficient Non-Preemptive Real-Time Scheduling

Date: September 2005
Creator: Li, Wenming; Kavi, Krishna M. & Akl, Robert G.
Description: This paper discusses non-preemptive, real-time scheduling.
Contributing Partner: UNT College of Engineering
Enhanced Channel Assignment and Load Distribution in IEEE 802.11 WLANs

Enhanced Channel Assignment and Load Distribution in IEEE 802.11 WLANs

Date: November 2007
Creator: Al-Rizzo, Hussain Mudhaffar Younis, 1957-; Haidar, Mohamad; Akl, Robert G. & Chan, Yupo
Description: This paper discusses enhanced channel assignment and load distribution in IEEE 802.11 WLANs.
Contributing Partner: UNT College of Engineering
Dynamic Channel Assignment in IEEE 802.11 Networks

Dynamic Channel Assignment in IEEE 802.11 Networks

Date: March 2007
Creator: Akl, Robert G. & Arepally, Anurag
Description: This paper discusses dynamic channel assignment in IEEE 802.11 networks.
Contributing Partner: UNT College of Engineering
Performance Enhancement by Eliminating Redundant Function Execution

Performance Enhancement by Eliminating Redundant Function Execution

Date: April 2006
Creator: Chen, Peng; Kavi, Krishna M. & Akl, Robert G.
Description: This paper discusses performance enhancement by eliminating redundant function execution.
Contributing Partner: UNT College of Engineering
Optimal Load Distribution in Large Scale WLAN Networks Utilizing a Power Management Algorithm

Optimal Load Distribution in Large Scale WLAN Networks Utilizing a Power Management Algorithm

Date: May 2007
Creator: Haidar, Mohamad; Akl, Robert G.; Al-Rizzo, Hussain Mudhaffar Younis, 1957-; Chan, Yupo & Adada, Rami
Description: This article discusses optimal load distribution in large scale WLAN networks utilizing a power management algorithm.
Contributing Partner: UNT College of Engineering