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1. |
Record Nr. |
UNINA9911079648203321 |
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Titolo |
Authorizing the Secretary of Defense to lend certain Army, Navy, and Air Force equipment, and provide certain services to the Boy Scouts of America for use at the Third National Jamboree for the Boy Scouts. May 1, 1952. -- Ordered to be printed |
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Pubbl/distr/stampa |
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[Washington, D.C.] : , : [U.S. Government Printing Office], , 1952 |
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Descrizione fisica |
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1 online resource (3 pages) |
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Collana |
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Senate report / 82nd Congress, 2nd session. Senate ; ; no. 1503 |
[United States congressional serial set] ; ; [serial no. 11567] |
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Altri autori (Persone) |
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HuntLester Callaway <1892-1954.> (Democrat (WY)) |
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Soggetti |
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Clergy conferences |
Congresses and conventions |
Legislative amendments |
Military supplies |
Scouting (Youth activity) |
Legislative materials. |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Batch processed record: Metadata reviewed, not verified. Some fields updated by batch processes. |
FDLP item number not assigned. |
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2. |
Record Nr. |
UNINA9911095486903321 |
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Autore |
Pun Man-On |
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Titolo |
Multi-carrier techniques for broadband wireless communications : a signal processing perspective / / Man-On Pun, Michele Morelli, C.-C. Jay Kuo |
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Pubbl/distr/stampa |
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London, : Imperial College Press |
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Hackensack, NJ, : Distributed by World Scientific, c2007 |
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ISBN |
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9786611867669 |
9781281867667 |
1281867667 |
9781860949470 |
1860949479 |
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Edizione |
[1st ed.] |
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Descrizione fisica |
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1 online resource (272 p.) |
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Collana |
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Communications and signal processing ; ; v. 3 |
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Altri autori (Persone) |
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MorelliMichele |
KuoC.-C. Jay (Chung-Chieh Jay) |
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Disciplina |
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Soggetti |
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Orthogonal frequency division multiplexing |
Wireless communication systems |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references (p. 243-254) and index. |
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Nota di contenuto |
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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 |
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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 |
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Sommario/riassunto |
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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. |
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