Canadian Conference on Electrical and Computer Engineering 2004 (IEEE Cat. No.04CH37513)

2-5 May 2004

Go

Filter Results

Displaying Results 1 - 25 of 184
  • Integrated optical/wireless networking

    Publication Year: 2004, Page(s):2095 - 2098 Vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (363 KB) | HTML iconHTML

    The explosive growth of fiber bandwidth is revolutionizing telecommunications throughout the world. The end-user bandwidth demand is also increasing concurrently. To run fiber to each end user is impossible. To cope with this situation, hybrid fiber radio (HFR) and hybrid free space optics (FSO)/RF are viable solutions to provide survivable access networks for the end-users and business access. It... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A request scheduling algorithm to support flexible resource reservations in advance

    Publication Year: 2004, Page(s):1971 - 1974 Vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (357 KB) | HTML iconHTML

    The request scheduling is the problem of. finding a schedule for a given set of book-ahead (BA) requests connection, with the goal of maximizing the profit obtained from the accepted BA requests. The problem is considered in a scenario with advance reservations where users can specify a flexible duration for when they want their connections to be established. In this paper, we focus the problem on... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An iterative MMSE-decision feedback multiuser detector for space-time coded multicarrier CDMA system

    Publication Year: 2004, Page(s):2281 - 2286 Vol.4
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (449 KB) | HTML iconHTML

    Performance of wireless communication systems is primarily limited by multipath fading effect of the radio channel and multiple-access interference caused due to other users in the system. Two promising techniques to counter these problems are space-time coding and iterative multiuser detection. In this paper, an iterative receiver structure for space-time block coded MC-CDMA system employing mult... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Transparent fiber-optic system to extend digital subscriber lines

    Publication Year: 2004, Page(s):2189 - 2192 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (373 KB) | HTML iconHTML

    A transparent optical feeder has been developed to enlarge the service area of digital subscriber line (DSL) systems and provide higher data rates to customers. In this fiber/copper distribution system, the optical feeder constitutes a "lossless cable" that connects to the relatively short copper distribution pairs that service individual customers. PCM encoding and digital transmission on the opt... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On 4G and beyond multi-hop wireless networks

    Publication Year: 2004, Page(s):2277 - 2280 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (331 KB) | HTML iconHTML

    In recent research (A. Safwat, "Wireless Ad hoc and Sensor Networks," Kluwer Academic Publ.; Proc. IEEE Vehicular Tech. Conf., 2003; "Wireless Comm. Sys. and Networks", ch. 3, Kluwer Academic Publ.; and Proc. IEEE Int. Conf. on Comms., 2004), we envisioned wireless multi-hopping as a complementary technology to conventional cellular networks. In this paper, we present analytical models to compute ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • IEEE Canada Awards Banquet

    Publication Year: 2004, Page(s):31 - 32
    Request permission for commercial reuse | PDF file iconPDF (204 KB)
    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Expansion of transmission systems in a deregulated environment

    Publication Year: 2004, Page(s):1943 - 1947 Vol.4
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (371 KB) | HTML iconHTML

    Transmission congestion is an unavoidable consequence of power industry deregulation. Congestion can be relieved through either generation rescheduling or transmission system expansion, both resulting in increased operating cost. An optimal generation rescheduling approach, which is based on an AC method, is introduced. The proposed method can be utilized to optimize a generation re-dispatch schem... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • BER analysis of self-heterodyne OFDM transmission scheme

    Publication Year: 2004, Page(s):1953 - 1956 Vol.4
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (361 KB) | HTML iconHTML

    A self heterodyne system is power inefficient compared to a conventional coherent system, but it has the advantage that simple, low-cost, receivers can be built that are completely immune to any phase noise or frequency offset contributed by the transmitter's RF carrier. This is of particular importance to multicarrier schemes, such as OFDM, that are much more sensitive to frequency and phase erro... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • High-speed signal compensation on printed circuit boards

    Publication Year: 2004, Page(s):2185 - 2188 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (357 KB) | HTML iconHTML

    Data transfer rates on printed circuit boards have approached speeds that challenge the limits of today's technology. Chip-to-chip digital communication has reached a plateau at 3 Gbit/s and several problems need to be addressed to significantly increase data transfer rates. Crosstalk between adjacent signal lines increases with increasing frequency. With far end crosstalk (FEXT), inductive and ca... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A improved space-time trellis coded OFDM scheme for frequency selective fading channels

    Publication Year: 2004, Page(s):1967 - 1970 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (329 KB) | HTML iconHTML

    We have studied the space-time trellis code (STTC) design in OFDM systems. By the research, especially by simulation, it is shown that, in multi-flat fading channels, the STTC-OFDM system can potentially provide more coding gain. We also found that the optimal STTC design is important for OFDM when using space-time codes (STC). By following this conclusion, an improved STTC is designed. Computer s... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Embedded system partitioning with flexible granularity by using a variant of tabu search

    Publication Year: 2004, Page(s):2073 - 2076 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB) | HTML iconHTML

    Various techniques to partition a system into hardware and software blocks have been proposed in the past. Most of these techniques use some form of control flow graphs (CFG) and employ optimization algorithms like simulated annealing or tabu search to reach an optimal solution. A partitioning method presented in this paper partitions a CFG representation by employing a variant of tabu search, whi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Improved space-time trellis codes with three and four transmit antennas

    Publication Year: 2004, Page(s):2089 - 2093 Vol.4
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (349 KB) | HTML iconHTML

    It has been shown that the rank and the determinant of the distance matrices are the design criteria for space-time trellis codes over quasi-static Rayleigh fading channels. Recently, a new design criterion that maximizes only the trace has been proposed for systems with a large product of the numbers of transmit and receive antennas. This criterion is useful and yields superior codes when the pro... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A novel context modeling scheme for motion vectors context-based arithmetic coding

    Publication Year: 2004, Page(s):2021 - 2024 Vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (347 KB) | HTML iconHTML

    A new context modelling scheme for arithmetic coding of motion vectors (MVs) is proposed. The model uses the correlation between the horizontal and vertical components of the MVs to improve the probability estimation of symbols. The accurate probability estimation can therefore improve the efficiency of the context-based arithmetic coder. The proposed scheme has been adapted to the H.264 advanced ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Intrusion detection for wireless local area network

    Publication Year: 2004, Page(s):1949 - 1952 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (361 KB) | HTML iconHTML

    Wireless intrusion detection systems are an important addition to the security of wireless local area networks (WLANs). We focus on intrusion detection and security consideration in wireless local area networks. We present intrusion detection for WLANs, give wireless intrusion detection systems and system architecture considerations. We also present a conceptual model for an IDS agent. IDS agents ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Extreme Programming in global software development

    Publication Year: 2004, Page(s):1845 - 1848 Vol.4
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB) | HTML iconHTML

    Reliable communication is essential for the success of global collaborative software development efforts. Software development organizations and methodologies must be tailored to avoid communications issues which may result in misunderstood requirements or missed project milestones. Extreme Programming (XP) was adopted for the Lattice® Trading System reengineering project - a global... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design and simulation of laser diode with sampled grating structure by the split-step traveling wave approach

    Publication Year: 2004, Page(s):2151 - 2154 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB) | HTML iconHTML

    The traveling wave model is commonly used in the simulation of semiconductor laser diodes and photonic integrated circuits. When the laser diode is cascaded with other passive elements of relatively large optical dimension such as a sampled grating DBR section, the conventional approach by tracing the forward and the backward traveling waveform along the entire passive section in the time domain b... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A study of DiffServ based QoS issues in next generation mobile networks

    Publication Year: 2004, Page(s):2359 - 2362 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB) | HTML iconHTML

    To provide data rates of the order of hundreds of Mbps and multimedia services, standardization efforts for next generation (4G) systems are focusing on target technologies and seamless connectivity through various types of networks, including wireline networks and WLANs. Different types of multiple access techniques, such as the ones based on multicarrier CDMA and OFDM (orthogonal frequency divis... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An integrated low-voltage SLIC/codec for short loop applications

    Publication Year: 2004, Page(s):2379 - 2382 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB) | HTML iconHTML

    A single chip solution for doing analog and digital signal processing for subscriber line telephony is proposed. Conventional line cards use a set of two chips for doing the same job: a low voltage mixed signal chip operating as a voice coder and a high voltage chip to fulfill high voltage requirement (up to 70 V) of the line. The proposed architecture utilizes a single chip designed in the ordina... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Computer design of super-orthogonal space-time trellis codes

    Publication Year: 2004, Page(s):2179 - 2184 Vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (418 KB) | HTML iconHTML

    Super-orthogonal space-time trellis codes (SOSTTC) designed by hand can significantly improve the performance of space-time trellis codes. This paper introduces a new representation of SOSTTC based on a generator matrix that allows a systematic and exhaustive search of all possible codes. This verifies that some of the known codes are optimal, and provides a means to easily implement encoders and ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A study and comparison of full adder cells based on the standard static CMOS logic

    Publication Year: 2004, Page(s):2139 - 2142 Vol.4
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (330 KB) | HTML iconHTML

    An overview of the performance of 1-bit full adder cells based on the main standard static logic styles and in depth examination of the advantages and limitations of each of them with respect to speed and power dissipation are presented. A comparison is performed in a wide range of main static logic styles. Six 1-bit full adder circuits based on these logic styles are chosen for the extensive eval... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A tool converting finite state machine to VHDL

    Publication Year: 2004, Page(s):1907 - 1910 Vol.4
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (334 KB) | HTML iconHTML

    Finite state machines (FSM) are a basic component in hardware design; they represent the transformation between inputs and outputs for sequential designs. FSMs can be represented graphically, which would help the designer to visualize and design in a more efficient way; on the other hand the designer requires a fast direct way to convert the visualized design to hardware description language (HDL)... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design of an electronic saccadic imaging system

    Publication Year: 2004, Page(s):2227 - 2230 Vol.4
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (379 KB) | HTML iconHTML

    An electronic implementation of a saccadic vision system consisting of a CMOS image sensor ("the eye") mounted on a mechanical servomotor ("the neck") is presented. The camera first surveys the wide-angle scene at low-resolution ( 1/4 SXGA), and then switches to a smaller, higher-resolution (SXGA) subwindow for more detailed inspection of salient areas. Image processing on the low-resolution scene... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Average degradation degree fair adaptation algorithm in wireless network with mobile hosts

    Publication Year: 2004, Page(s):2303 - 2306 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (345 KB) | HTML iconHTML

    In the literature are proposed different architectures and algorithms finalized to mitigate the impacts of mobility on the real-time services to mobile users; several new architectures are proposed here. Since the dynamics of the resources in mobile computing environments are much more severe than in wire-line environments, the need is perceived in the scientific community to provide effective mec... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Bayesian-networks-based approach for managing uncertainty in location-tracking applications

    Publication Year: 2004, Page(s):2205 - 2208 Vol.4
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (377 KB) | HTML iconHTML

    In this paper we present a probabilistic model for managing uncertainty in location-tracking applications. Our technique tries to capitalize on the fact that humans are creatures of habit, which makes it possible to predict how a person would react in a certain situation, based on his/her history. Since the moving objects (MO) we are interested in here are humans, we refer to this subset of MO as ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Characteristic function approach for higher order crossings with application for speed estimation

    Publication Year: 2004, Page(s):2397 - 2400 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (343 KB) | HTML iconHTML

    In this paper, the zero crossing rate (ZCR) of the first derivative of a Rayleigh fading process is expressed in terms of its characteristic function. Based on the ZCR of the slope (first derivative) of the underlying fading process, a mobile speed estimation scheme, constructed by counting the average number of sampling steps in a positive-going (and/or negative-going) fade envelope slope, is pro... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.