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IEEE Communications Magazine

Issue 2 • Feb. 2005

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Displaying Results 1 - 25 of 31
  • Multiple access technologies for B3G wireless communications

    Publication Year: 2005, Page(s):65 - 67
    Cited by:  Papers (11)
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  • Broadband access varieties

    Publication Year: 2005, Page(s): 126
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  • Meetings and conferences

    Publication Year: 2005, Page(s):6 - 7
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  • Leveraging technology and the market to bring telecommunications business into the next decade

    Publication Year: 2005, Page(s):1 - 4
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  • Mobile IPv6: mobility in a wireless internet [Book Review]

    Publication Year: 2005, Page(s): 8
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  • IEEE Optical Communications

    Publication Year: 2005, Page(s):S1 - S2
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  • Optical access networks

    Publication Year: 2005, Page(s): S4
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  • IEEE Communications Magazine

    Publication Year: 2005, Page(s): 1
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  • Table of contents

    Publication Year: 2005, Page(s):2 - 4
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  • Approaches to spectrum sharing

    Publication Year: 2005, Page(s):10 - 12
    Cited by:  Papers (298)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (437 KB) | HTML iconHTML

    Many complain about severe spectrum shortage. The shortage comes from outdated spectrum policies that allows for little sharing. Regulators have granted licenses that offer exclusive access to the spectrum. When these licensees are not transmitting, the spectrum sits idle. A new technology regarding spectrum shortage enables more spectrum sharing that unleashes innovative products and services, pr... View full abstract»

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  • Conference calendar

    Publication Year: 2005, Page(s):14 - 16
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  • New products

    Publication Year: 2005, Page(s): 20
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  • CommuniCrostic puzzle

    Publication Year: 2005, Page(s): 22
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  • OFC/NFOEC 2005 (Reaching the Entire Spectrum of Optical Communications)

    Publication Year: 2005, Page(s):S6 - S8
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  • Bandwidth allocation for multiservice access on EPONs

    Publication Year: 2005, Page(s):S16 - S21
    Cited by:  Papers (90)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (542 KB) | HTML iconHTML

    Ethernet passive optical networks are a low-cost high-speed solution to the bottleneck problem of the broadband access network. A major characteristic of EPONs is the shared upstream channel among end users, mandating efficient medium access control to facilitate statistical multiplexing and provision multiple services for different types of traffic. This article addresses and provides an overview... View full abstract»

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  • Addressing challenges in serial 10 Gb/s multimode fiber enterprise networks

    Publication Year: 2005, Page(s):S22 - S28
    Cited by:  Papers (9)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB) | HTML iconHTML

    As the number of networked computer devices connected within local area networks increases, the aggregation requirements of the optical fiber backbone within these networks are also increased. This article highlights the challenges - and a possible solution - to migrating data communications networks to higher data rate capability, while in parallel cost effectively supporting the existing fiber i... View full abstract»

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  • The first hot pluggable 2.5 Gb/s DWDM transceiver in an SFP form factor

    Publication Year: 2005, Page(s):S29 - S31
    Cited by:  Papers (5)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (705 KB) | HTML iconHTML

    For the first time, a hot pluggable 2.5 Gb/s DWDM transceiver with 100 GHz spacing in an SFP form factor has been presented. We demonstrate transmit wavelength drift of plusmn9 pm and optical output power stability of 0.2 dB over an operating case temperature range of -5degC to 70 degC. The minimum receive sensitivity was -33.2 dBm for back-to-back, -32.6 dBm after transmission over 80 km of stand... View full abstract»

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  • Interference-free broadband single- and multicarrier DS-CDMA

    Publication Year: 2005, Page(s):68 - 73
    Cited by:  Papers (35)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (593 KB) | HTML iconHTML

    The choice of the direct sequence spreading code in DS-CDMA predetermines the properties of the system. This contribution demonstrates that the family of codes exhibiting an interference-free window (IFW) outperforms classic spreading codes, provided that the interfering multi-user and multipath components arrive within this IFW, which may be ensured with the aid of quasi-synchronous adaptive timi... View full abstract»

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  • CS-OFDMA: a new wireless CDD physical layer scheme

    Publication Year: 2005, Page(s):74 - 79
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (518 KB) | HTML iconHTML

    A proposed new innovative wireless CDD physical layer scheme for 4G called CS-OFDMA is introduced. Code spreading uses a set of smart codes with its meritorious properties, which can eliminate multipath and multiuser interferences. The same number of smart codes applied repeatedly in each subcarrier of OFDMA is used to increase the number of traffic channels. It takes advantage of attributes of bo... View full abstract»

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  • Ultra-wideband for multiple access communications

    Publication Year: 2005, Page(s):80 - 87
    Cited by:  Papers (167)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB) | HTML iconHTML

    Ultra-wideband wireless communications techniques have many merits, including an extremely simple radio that inherently leads to low-cost design, large processing gain for robust operations in the presence of narrowband interference, covert operations, and fine time resolution for accurate position sensing. However, there are a number of challenges in UWB receiver design, such as capturing multipa... View full abstract»

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  • A time-orthogonal CDMA high-speed uplink data transmission scheme for 3G and beyond

    Publication Year: 2005, Page(s):88 - 94
    Cited by:  Papers (4)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (509 KB) | HTML iconHTML

    In 3G systems, the achievable data rates and capacity on the uplink are much smaller than the downlink data rates and capacity due to the nonorthogonal nature of the CDMA uplink. In this article, we present a new time-orthogonal CDMA approach called high-speed uplink data burst transmission mode. The concept is based on slot-synchronized slot-orthogonal transmissions whereby high-speed data transm... View full abstract»

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  • Perspectives for present and future CDMA-based communications systems

    Publication Year: 2005, Page(s):95 - 100
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB) | HTML iconHTML

    In this article the main boosters of future CDMA communication systems are presented and described in order to highlight the ways to cope with the more challenging requirements of future systems and services. Particular attention is devoted to the inherent weak points of CDMA systems and detection techniques that can be used to overcome their impairments. Moreover, high-data-rate transmissions in ... View full abstract»

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  • A high-performance MIMO OFDM wireless LAN

    Publication Year: 2005, Page(s):101 - 109
    Cited by:  Papers (64)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (564 KB) | HTML iconHTML

    Tremendous consumer interest in multimedia applications is fueling the need for successively higher data rates in wireless networks. Data rates in wireless wide area networks are limited by the need to address wide coverage, vehicular mobility, and the limitations of licensed spectrum. Thus, data rates in WWANs continue to lag advances in wireless local area networks by orders of magnitude. There ... View full abstract»

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  • A tutorial on multiple access technologies for beyond 3G mobile networks

    Publication Year: 2005, Page(s):110 - 117
    Cited by:  Papers (79)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (543 KB) | HTML iconHTML

    In this article, some fundamental technical concepts of the main multiple access schemes for wireless mobile systems are reviewed, and a path for the development of appropriate multiple access technologies for next-generation mobile networks, or so-called beyond 3G (B3G), is established. We first review the multiple access technologies in second- and third-generation wireless cellular systems from... View full abstract»

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  • MIMO MC-CDMA communications for future cellular systems

    Publication Year: 2005, Page(s):118 - 124
    Cited by:  Papers (53)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (531 KB) | HTML iconHTML

    We propose an efficient multiple-input multiple-output concept based on space-time turbo coded modulation and layered spatial multiplexing architectures for cellular multicarrier code-division multiple access systems. We design appropriate receiver algorithms, and compare their performance to competing schemes in a single-cell system. We then evaluate the performance of the scheme in a seven-cell ... View full abstract»

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Aims & Scope

IEEE Communications Magazine, considered by most to be their most important member benefit, provides timely information on all aspects of communications: monthly feature articles describe technology, systems, services, market trends, development methods, regulatory and policy issues, and significant global events.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Osman Gebizlioglu
Huawei Technologies