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IEEE Signal Processing Magazine

Issue 6 • Date November 2008

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Displaying Results 1 - 25 of 27
  • Front cover - IEEE Signal Processing Magazine - Nov. 2008

    Publication Year: 2008, Page(s): C1
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  • Table of contents - Vol 25 No 6

    Publication Year: 2008, Page(s): 1
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  • A journey to the heart of the society [From the Editor]

    Publication Year: 2008, Page(s):2 - 4
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  • Shopping for a new suit? Try it on! [President's Message]

    Publication Year: 2008, Page(s): 6
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  • Signal processing letters: Charting a new course [Society News]

    Publication Year: 2008, Page(s): 8
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  • Cognitive Radio Technology[Guest Editorial]

    Publication Year: 2008, Page(s):10 - 198
    Cited by:  Papers (2)  |  Patents (2)
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  • Cognitive radio networks

    Publication Year: 2008, Page(s):12 - 23
    Cited by:  Papers (85)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1186 KB) | HTML iconHTML

    In recent years, the development of intelligent, adaptive wireless devices called cognitive radios, together with the introduction of secondary spectrum licensing, has led to a new paradigm in communications: cognitive networks. Cognitive networks are wireless networks that consist of several types of users: often a primary user (the primary license-holder of a spectrum band) and secondary users (... View full abstract»

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  • Cognitive radio modulation techniques

    Publication Year: 2008, Page(s):24 - 34
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2254 KB) | HTML iconHTML

    The growing demand on wireless communication systems to provide high data rates has brought with it the need for a flexible and efficient use of the spectrum resource, which is a scarce commodity. The regional spectrum allocation policy counteracts the free mobility of radio communication equipment. The vast majority of the available spectral resources have already been licensed, so it appears tha... View full abstract»

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  • Antijamming coding techniques

    Publication Year: 2008, Page(s):35 - 45
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1084 KB) | HTML iconHTML

    In this article, we have provided an overview of several coding techniques for erasure channels which can be or have been applied to cognitive radio systems as antijamming coding schemes for link maintenance purpose. We have discussed in detail the conventional erasure codes, LDPC codes, rate less codes, as well as recently proposed piecewise coding. Among these coding schemes, conventional RS cod... View full abstract»

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  • Cognitive MIMO radio

    Publication Year: 2008, Page(s):46 - 59
    Cited by:  Papers (83)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1242 KB) | HTML iconHTML

    Radio regulatory bodies are recognizing that the rigid spectrum assignment granting exclusive use to licensed services is highly inefficient, due to the high variability of the traffic statistics across time, space, and frequency. Recent Federal Communications Commission (FCC) measurements show that, in fact, the spectrum usage is typically concentrated over certain portions of the spectrum, while... View full abstract»

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  • Collaborative wideband sensing for cognitive radios

    Publication Year: 2008, Page(s):60 - 73
    Cited by:  Papers (138)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1116 KB) | HTML iconHTML

    Cognitive radio (CR) has recently emerged as a promising technology to revolutionize spectrum utilization in wireless communications. In a CR network, secondary users continuously sense the spectral environment and adapt transmission parameters to opportunistically use the available spectrum. A fundamental problem for CRs is spectrum sensing; secondary users need to reliably detect weak primary si... View full abstract»

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  • Game theoretical mechanism design methods

    Publication Year: 2008, Page(s):74 - 84
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1485 KB) | HTML iconHTML

    Dynamic spectrum access with cognitive radios has become a promising approach to improve spectrum efficiency by adaptively coordinating different users' access according to spectrum dynamics. However, selfish users competing with each other for spectrum may exchange false private information or collude with others to get more access to the spectrum and achieve higher profits. In this article, we i... View full abstract»

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  • Addressing feasibility of cognitive radios

    Publication Year: 2008, Page(s):85 - 93
    Cited by:  Papers (52)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2653 KB) | HTML iconHTML

    In this article we present a feasibility study of spectrum-sensing techniques using a research testbed platform for exploration and demonstration of cognitive radio systems. Our cognitive radio testbed is particularly suited for the development of physical and network layer functionalities and their experimental characterization in realistic wireless scenarios. Advanced testbed capabilities includ... View full abstract»

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  • Transmit codes and receive filters for radar

    Publication Year: 2008, Page(s):94 - 109
    Cited by:  Papers (30)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2225 KB) | HTML iconHTML

    This article's main goal is to show how to design the receive filter (including its length) and the transmit code sequence via the optimization of a number of relevant metrics considered separately or in combination. Several numerical studies are given to illustrate the performance of the presented designs. Compared with most of the previously published works on the subject, the present contributi... View full abstract»

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  • Electronic dispersion compensation

    Publication Year: 2008, Page(s):110 - 130
    Cited by:  Papers (22)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1819 KB) | HTML iconHTML

    This article provides an overview of some of the driving factors that limit the performance of optical links and highlight some of the potential opportunities for the signal processing community to make substantial contributions. View full abstract»

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  • The variational approximation for Bayesian inference

    Publication Year: 2008, Page(s):131 - 146
    Cited by:  Papers (66)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1027 KB) | HTML iconHTML

    The influence of this Thomas Bayes' work was immense. It was from here that "Bayesian" ideas first spread through the mathematical world, as Bayes's own article was ignored until 1780 and played no important role in scientific debate until the 20th century. It was also this article of Laplace's that introduced the mathematical techniques for the asymptotic analysis of posterior distributions that ... View full abstract»

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  • Social network analysis and visualization [Applications Corner]

    Publication Year: 2008, Page(s):147 - 151
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (773 KB) | HTML iconHTML

    The notion of a social network, and associated methods of analysis, is permeating an increasing number of application domains, including, e.g., communications, bibliometry, and systems biology. This article provides a short introduction, and an overview of the foundations of this field, focussing primarily, but not excusively, on methods. View full abstract»

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  • Swarm intelligence and signal processing [DSP Exploratory]

    Publication Year: 2008, Page(s):152 - 158
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (116 KB) | HTML iconHTML

    Swarm intelligence deals with the behavior of natural or artificial swarms. Swarms are systems that consist of many individuals that are organized and coordinated by principles of decentralized control, indirect communication, and self-organization. Examples of natural swarms are social insect colonies, flocks of birds, schools of fish, or herds of land animals. Examples of artificial swarms inclu... View full abstract»

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  • Slope filtering: An FIR approach to linear regression [DSP Tips&Tricks]

    Publication Year: 2008, Page(s):159 - 163
    Cited by:  Papers (2)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (463 KB) | HTML iconHTML

    While developing a communications receiver, the author encountered a problem that was efficiently solved using a method called slope filtering, which is a novel application of the standard equations of linear regression. This article introduces the slope filtering process and its effective use in applications such as communications receiver carrier recovery, signal rate of change estimation, and s... View full abstract»

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  • LASeR: The lightweight rich media representation standard [Standards in a Nutshell]

    Publication Year: 2008, Page(s):164 - 168
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1127 KB) | HTML iconHTML

    Rich media stands for any dynamic combination of video, audio, images, graphics, text; and featuring interactivity, animation, and dynamic behavior over time according to the user's requests. Using rich media allows for better user interfaces, replacing unwieldy catalogs by fluid services and eye-pleasing presentations. The term rich media is different from "multimedia," the latter being sometimes... View full abstract»

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  • Adaptive Filtering [Best of the Web]

    Publication Year: 2008, Page(s):169 - 172
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  • Advanced FPGA Design (by S. Kilts; 2007) [Book Review]

    Publication Year: 2008, Page(s):173 - 174
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  • Advances in hardware design and implementation of signal processing systems [DSP Forum]

    Publication Year: 2008, Page(s):175 - 180
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (259 KB) | HTML iconHTML

    This IEEE Signal Processing Magazine (SPM) forum discusses advances, challenges, and future trends in hardware design and implementation of signal processing (SP) systems. The invited forum members who bring their expert insights are: Prof. Shuvra S. Bhattacharyya (University of Maryland, College Park), Jeff Bier [Berkeley Design Technology, Inc. (BDTI)], Dr. Wanda K. Gass (Texas Instruments), Dr.... View full abstract»

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  • Dates Ahead

    Publication Year: 2008, Page(s): 182
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  • 2008 Index

    Publication Year: 2008, Page(s):183 - 195
    Cited by:  Papers (1)
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Aims & Scope

IEEE Signal Processing Magazine publishes tutorial-style articles on signal processing research and applications, as well as columns and forums on issues of interest. Its coverage ranges from fundamental principles to practical implementation, reflecting the multidimensional facets of interests and concerns of the community. Its mission is to bring up-to-date, emerging and active technical developments, issues, and events to the research, educational, and professional communities. It is also the main Society communication platform addressing important issues concerning all members.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Min Wu
University of Maryland, College Park
United States 

http://www/ece.umd.edu/~minwu/