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1. |
Record Nr. |
UNISA996464516003316 |
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Autore |
Wen Miaowen |
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Titolo |
Index Modulation for OFDM Communications Systems / / Miaowen Wen, Qiang Li, Xiang Cheng |
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Pubbl/distr/stampa |
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Singapore : , : Springer, , [2021] |
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©2021 |
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ISBN |
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Edizione |
[1st ed. 2021.] |
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Descrizione fisica |
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1 online resource (XIV, 172 p. 100 illus., 55 illus. in color.) |
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Collana |
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Disciplina |
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Soggetti |
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Wireless communication systems |
Orthogonal frequency division multiplexing |
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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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Nota di bibliografia |
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Includes bibliographical references. |
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Nota di contenuto |
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1 Introduction -- 2 Constellation-Based Index Modulation: A Combinatorial Approach -- 3 Constellation-Based Index Modulation: A Permutational Approach -- 4 Code-Based Index Modulation -- 5 Pilot-Based Index Modulation -- 6 Conclusions and Future Directions. |
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Sommario/riassunto |
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Thanks to their considerable advantages, index modulation and orthogonal frequency division multiplexing (OFDM) are considered to be promising candidates for future wireless communications. This book focuses on the index modulation techniques for OFDM communications systems, which allow information to be conveyed not only via constellation symbols, but also by the indices of various transmission entities in OFDM systems, such as signal constellations, spreading codes, and pilots. The book discusses representative transmitter and receiver designs, optimization and performance analysis of index modulation based on various transmission entities. It also introduces readers to information-guided precoding for OFDM systems, followed by two embodiments: layered index modulation and grouped index modulation. It then describes how the spreading code is used to design an index modulated spread spectrum for OFDM systems, and the extensions to multi-code and multi-user scenarios. In addition it explores information guided pilot insertion for OFDM systems, followed by applications in carrier phase tracking and channel estimation. Lastly, |
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the book highlights a number of open problems and discusses future research directions in the general field of index modulation. Intended for professionals and researchers in the field of wireless communications, this book is also a valuable resource for advanced-level electrical engineering and computer science students. |
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2. |
Record Nr. |
UNINA9910694528503321 |
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Autore |
Kutz Gregory D |
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Titolo |
DOD business transformation [[electronic resource] ] : sustained leadership needed to address long-standing financial and business management problems : testimony before the Subcommittee on Government Management, Finance, and Accountability, Committee on Government Reform, House of Representatives / / statement of Gregory D. Kutz, [and] Randolph C. Hite |
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Pubbl/distr/stampa |
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[Washington, D.C.] : , : U.S. Government Accountability Office, , [2005] |
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Collana |
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Testimony ; ; GAO-05-723 T |
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Altri autori (Persone) |
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Soggetti |
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Information storage and retrieval systems - Business - Evaluation |
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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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Title from title screen (viewed on Aug. 1, 2005). |
"For release ... June 8, 2005." |
Paper version available from: U.S. Government Accountability Office, 441 G St., NW, Rm. LM, Washington, D.C. 20548. |
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Nota di bibliografia |
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Includes bibliographical references. |
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