Multi-carrier techniques for broadband wireless communications : a signal processing perspective / / Man-On Pun, Michele Morelli, C.-C. Jay Kuo

• Record Nr.: UNINA9911139681603321
• Autore: Pun Man-On
• Pubbl/distr/stampa: London, : Imperial College Press; Hackensack, NJ, : Distributed by World Scientific, c2007
• ISBN: 9786611867669; 9781281867667; 1281867667; 9781860949470; 1860949479
• Edizione: [1st ed.]
• Descrizione fisica: 1 online resource (272 p.)
• Collana: Communications and signal processing ; ; v. 3
• Altri autori (Persone): MorelliMichele; KuoC.-C. Jay (Chung-Chieh Jay)
• Disciplina: 621.38212; 621.384
• Soggetti: Orthogonal frequency division multiplexing; Wireless communication systems
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Description based upon print version of record.
• Nota di bibliografia: Includes bibliographical references (p. 243-254) and index.
• Nota di contenuto: Preface; Contents; 1. Introduction; 1.1 Aim of this book; 1.2 Evolution of wireless communications; 1.2.1 Pioneering era of wireless communications; 1.2.2 First generation (1G) cellular systems; 1.2.3 Second generation (2G) cellular systems; 1.2.4 Third generation (3G) cellular systems; 1.2.5 Wireless local and personal area networks; 1.2.6 Wireless metropolitan area networks; 1.2.7 Next generation wireless broadband systems; 1.3 Historical notes on multicarrier transmissions; 1.4 Outline of this book; 2. Fundamentals of OFDM/OFDMA Systems; 2.1 Mobile channel modeling; 2.1.1 Parameters of wireless channels2.1.1.1 Path loss; 2.1.1.2 Excess delay; 2.1.1.3 Power delay profile; 2.1.1.4 Root-mean-squared (RMS) delay spread; 2.1.1.5 Coherence bandwidth; 2.1.1.6 Doppler spread; 2.1.1.7 Coherence time; 2.1.2 Categorization of fading channels; 2.1.2.1 Frequency-nonselective and slowly-fading channels; 2.1.2.2 ; Frequency-selective fading channels; 2.1.2.3 Time-selective fading channels; 2.1.2.4 Frequency- and time-selective fading channels; 2.2 Conventional methods for channel fading mitigation; 2.2.1 Time-selective fading; 2.2.2 Frequency-selective fading; 2.3 OFDM systems2.3.1 System architecture; 2.3.2 Discrete-time model of an OFDM system; 2.4 Spectral efficiency; 2.5 Strengths and drawbacks of OFDM; 2.6 OFDM-based multiple-access schemes; 2.7 Channel coding and interleaving; 3. Time and Frequency Synchronization; 3.1 Sensitivity to timing and frequency errors; 3.1.1 Effect of timing offset; 3.1.2 Effect of frequency offset; 3.2 Synchronization for downlink transmissions; 3.2.1 Timing acquisition; 3.2.2 Fine timing tracking; 3.2.3 Frequency acquisition; 3.2.4 Frequency tracking; 3.3 Synchronization for uplink transmissions; 3.3.1 Uplink signal model with synchronization errors3.3.2 Timing and frequency estimation for systems with subband CAS; 3.3.3 Timing and frequency estimation for systems with interleaved CAS; 3.3.4 Frequency estimation for systems with generalized CAS; 3.4 Timing and frequency o®set compensation in uplink trans- missions; 3.4.1 Timing and frequency compensation with subband CAS; 3.4.2 Frequency compensation through interference cancellation; 3.4.3 Frequency compensation through linear multiuser detection; 3.4.4 Performance of frequency correction schemes; 4. Channel Estimation and Equalization4.1 Channel equalization; 4.2 Pilot-aided channel estimation; 4.2.1 Scattered pilot patterns; 4.2.2 Pilot distances in time and frequency directions; 4.2.3 Pilot-aided channel estimation; 4.2.4 2D Wiener interpolation; 4.2.5 Cascaded 1D interpolation lters; 4.2.5.1 Cascaded 1D Wiener interpolators; 4.2.5.2 Cascaded 1D polynomial-based interpolators; 4.2.5.3 LS-based interpolation in frequency domain; 4.3 Advanced techniques for blind and semi-blind channel estimation; 4.3.1 Subspace-based methods; 4.3.2 EM-based channel estimation; 4.3.2.1 Likelihood function for joint data detection and channel estimation
• Sommario/riassunto: Multi-Carrier Techniques for Broadband Wireless Communications provides an accessible introduction to OFDM-based systems from a signal processing perspective. The first part presents a concise treatment of some fundamental concepts related to wireless communications and multicarrier systems, while the second offers a comprehensive survey of recent developments on a variety of critical design issues. These include synchronization techniques, channel estimation methods, adaptive resource allocation and practical schemes for reducing the peak-to-average power ratio of the transmitted waveform.

Partly colored : Asian Americans and racial anomaly in the segregated South / / Leslie Bow

• Record Nr.: UNINA9911136088103321
• Autore: Bow <1962->
• Pubbl/distr/stampa: New York, : New York University Press, c2010
• ISBN: 9780814739129; 0814739121; 9780814787106; 081478710X
• Edizione: [1版.]
• Descrizione fisica: 1 online resource (296 p.)
• Altri autori (Persone): Leslie
• Disciplina: 305.895073075
• Soggetti: Asian Americans - Race identity - Southern States; Asian Americans - Southern States; Segregation - Southern States; Southern States Race relations
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Bibliographic Level Mode of Issuance: Monograph
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Frontmatter -- Contents -- Acknowledgments -- Introduction: Thinking Interstitially -- 1. Coloring between the Lines: Historiographies of Southern Anomaly -- 2. The Interstitial Indian: The Lumbee and Segregation’s Middle Caste -- 3. White Is and White Ain’t: Failed Approximation and Eruptions of Funk in Representations of the Chinese in the South -- 4. Anxieties of the ‘Partly Colored’ -- 5. Productive Estrangement: Racial-Sexual Continuums in Asian American as Southern Literature -- 6. Transracial/Transgender: Analogies of Difference in Mai’s America -- Afterword: Continuums, Mobility, Places on the Train -- Notes -- Works Cited -- Index -- About the Author
• Sommario/riassunto: Arkansas, 1943. The Deep South during the heart of Jim Crow-era segregation. A Japanese-American person boards a bus, and immediately is faced with a dilemma. Not white. Not black. Where to sit?By elucidating the experience of interstitial ethnic groups such as Mexican, Asian, and Native Americans—groups that are held to be neither black nor white—Leslie Bow explores how the color line accommodated—or refused to accommodate—“other” ethnicities within ; a binary racial system. Analyzing pre- and post-1954 American literature, film, autobiography, government documents, ethnography, photographs, and popular culture, Bow investigates the ways in which racially “in-between” people and communities were brought to heel within the South’s prevailing cultural logic, while locating the interstitial as a site of cultural anxiety and negotiation.Spanning the pre- to the post- segregation eras, Partly Colored traces the compelling history of “third race” individuals in the U.S. South, and in the process forces us to contend with the multiracial panorama that constitutes American culture and history.