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This book offers a thorough examination of potential game theory and its applications in radio resource management for wireless communications systems and networking. The book addresses two major research goals: how to identify a given game as a potential game, and how to design the utility functions and the potential functions with certain special properties in order to formulate a potential game. After proposing a unifying mathematical framework for the identification of potential games, the text surveys existing applications of this technique within wireless communications and networking problems found in OFDMA 3G/4G/WiFi networks, as well as next-generation systems such as cognitive radios and dynamic spectrum access networks. Professionals interested in understanding the theoretical aspect of this specialized field will find Potential Game Theory a valuable resource, as will advanced-level engineering students. It paves the way for extensive and rigorous research exploration on a topic whose capacity for practical applications is vast but not yet fully exploited.

This book offers a thorough examination of potential game theory and its applications in radio resource management for wireless communications systems and networking. The book addresses two major research goals: how to identify a given game as a potential game, and how to design the utility functions and the potential functions with certain special properties in order to formulate a potential game. After proposing a unifying mathematical framework for the identification of potential games, the text surveys existing applications of this technique within wireless communications and networking problems found in OFDMA 3G/4G/WiFi networks, as well as next-generation systems such as cognitive radios and dynamic spectrum access networks. Professionals interested in understanding the theoretical aspect of this specialized field will find Potential Game Theory a valuable resource, as will advanced-level engineering students. It paves the way for extensive and rigorous research exploration on a topic whose capacity for practical applications is vast but not yet fully exploited.

The developing fifth generation (5G) wireless networks are prepared to support the fundamental challenges, for example, very high data rate application, power control and high spectrum efficiency. To achieve these requirements, Multiuser Multiple-Input Multiple-Output (MU-MIMO) systems is the attractive option to increase both data rate and spectrum efficiency in uplink channel. In this paper, switching between spatial multiplexing (SM) and transmit diversity (TD) is proposed to increase the diversity performance in MU-MIMO systems. In this technique, the different transmission modes can be chosen for each user based on the instantaneous channel state at the receiver. Monte Carlo simulations validate advantage of the proposed technique over either spatial multiplexing or hybrid-MIMO technique in term of symbol error rate.

This chapter contains sections titled: Jackson Closed Queueing Networks Steady‐state Probability Distribution Convolution Algorithm Performance Measures Mean Value Analysis Application of Closed Queueing Networks Problems

This report summarizes the main research work during the past three and a half years of the project undertaken at Positioning & Wireless Technology Centre (PWTC) of NTU. It covers the following research topics: centralized multi-constrained Quality of Service (QoS) routing algorithms, MANET test-bed developments, QoS routing protocol for multi-cluster based ad hoc network with mobile backbone, QoS multicast routing protocol for multi-cluster based mobile ad hoc network (MANET), and hierarchical routing algorithms for large scale road networks. For the centralized multi-constrained QoS routing problem, by keeping limited number of non-dominated paths in each node according to a nonlinear path function, we have proposed Limited Path Dijkstra’s Algorithm (LPDA) and the Improved Limited Path Heuristic Algorithm (ILPHA). It is shown that our ILPHA improves the previous Limited Path Heuristic Algorithm (LPHA) significantly, and the heuristic algorithms with dominating area non-linear path function outperform the heuristic algorithms with the max weight based non-linear path function. For MANET test-bed developments, our practices in two MANET test-beds for video conference and video surveillance will be given, their implementation architecture and their notable features will be introduced. MANET addresses challenging QoS routing problem, particularly when the network is in large scale. We have studied the ad hoc network with Mobile Backbones (MBN) and this report introduces our findings for design of a hybrid QoS routing protocol for MBN. It is based on a proactive Intra-group Link state Updating Protocol (ILUP) and reactively discovery multiple segmented QoS paths sequentially from the source to the destination. The route search algorithm is modified from the k-shortest path algorithm or the Limited Path Dijkstra’s Algorithm (LPDA). Simulation results show the efficiency of the proposed protocol.

RGM 28/01 is research funded project entitled "Prediction Models for DTV (Digital Television) coverage in Singapore" approved by NTU in December 2001. The scope of the project work was to review the prediction models, quality of service (QOS) parameters and measurement techniques for obtaining QoS of mobile and Fixed DTV in Singapore. With the received signal strength, the objective was to design and package the software for predicting the coverage area for DTV in Singapore using commercial software tools and terrain data together with clutter classification for local environment. From the contents of the report, the research work has developed a suitable QoS parameters and measurement methods, procedures and analysis for verifying the QoS of DTV service in Singapore. The recommendations and technical work within is useful for the broadcast operators in the future. Finally, the research work has proposed several new models for DTV predictions including integrating a software package EDX making use of the terrain data, clutter classification and clutter factor for the local environment.

In this paper, we study the network performance of a wireless multi-hop network in terms of the successful link probability and k-connectivity probability by taking into account shadowing. We provide the closed-form analytic results of the successful link probability, and henceforth k-connectivity, in the context of shadowing multi-hop networks. Given a certain number of nodes spatially distributed according to a Poisson point process, we examine the critical density to keep the probability that a node is k-connected close to 1. The impacts of the shadowing on the k-connectivity are illustrated and discussed. The results can be practically used for the design of a wireless multi-hop network. Accepted version

This report covers the following research topics: centralized multi-constrained Quality of Service (QoS) routing algorithms, MANET test-bed developments, QoS routing protocol for multi-cluster based ad hoc network with mobile backbone, QoS multicast routing protocol for multi-cluster based mobile ad hoc network (MANET), and hierarchical routing algorithms for large scale road networks. For the centralized multi-constrained QoS routing problem, by keeping limited number of non-dominated paths in each node according to a nonlinear path function, we have proposed Limited Path Dijkstra?s Algorithm (LPDA) and the Improved Limited Path Heuristic Algorithm (ILPHA). It is shown that our ILPHA improves the previous Limited Path Heuristic Algorithm (LPHA) significantly, and the heuristic algorithms with dominating area non-linear path function outperform the heuristic algorithms with the max weight based non-linear path function.

The third-generation (3G) mobile systems have to support not only speech but also fast Internet and multimedia communications. In the International Telecommunication Union (ITU), 3G are called the International Mobile Telecommunications - 2000 (IMT-2000) which are being designed to support wideband services, at data rate as high as 2Mb/s, with the same quality as fixed networks. Wideband direct sequence code division multiple access (W-CDMA) is emerging as the predominant wireless access technology for 3G systems. Wideband CDMA is designed to flexibly offer wideband services, such as wireless Internet services (i.e., peak rate of 384 kb/s to download information from the Web) and video transmissions (data rate up to 2 Mb/s). The focus of this project emphasizes on hardware implementation of Turbo codec that conforms to the 3G standard. The Turbo coding scheme proposed in the implementation is 8-state parallel-concatenated convolutional code (PCCC). The polynomial generators of the constituent recursive systematic convolutional (RSC) encoders are 1011 and 1101.

The objectives of this project are to develop DGPS reference station network, interfaces and communication software/hardware; develop MAP database and routing algorithms for vehicle navigation; characterize GPS receivers and integrated GPS/DR positioning sensors, etc. RG 67/98

Covered the Phase I Satellite Engineering Program under which a LEO micro-satellite VHF/UHF groundstation was established as an infrastructure facility in NTU for research and study on the UoSAT series of micro-satellites. RG 74/94

In this project, we focused on using adaptive controller to design advanced controllers for industrial processes. It involves online parameters using measurements module a control law synthesis.

108 p. The research project "Developing a cost-effective high performance pattern analyser transputer system" was completed on May 1997. The objective of this project was to develop a pattern recognition system for computer vision using transputers placed in an IBM PC (Personal Computer). Four final year projects were involved in the development of the project, dealing withvarious aspects of pattern recognition. RP 18%#47;91