Buch, Englisch, 430 Seiten, Format (B × H): 177 mm x 255 mm, Gewicht: 965 g
ISBN: 978-0-470-03007-3
Verlag: IEEE COMPUTER SOC PR
This concise volume provides a widely accessible introduction to OFDM and MC-CDMA. Based on the authors' experience in researching OFDM in the context of various applications, it systematically converts the lessons of Shannon's information theory into practical wireless system design examples. Comprehensive coverage of OFDM, MIMO-OFDM and MC-CDMA is presented, incorporating radically new research-oriented principles. A further strength of this primer is that it considers the ambitious aim of achieving near-maximum-likelihood multi-user MIMO-OFDM performance at a modest complexity, proposing an advanced extension of the Complex Sphere Detector (CSD). This technique allows the system to support a higher number of OFDM/MC-CDMA users than the number of antennas even in the case of high-throughput QAM schemes.
* The design and performance of OFDM modems are highlighted, covering both Gaussian and wideband fading channels, frequency domain synchronization as well as adaptive single- and multi-user OFDM
* Offers a comparative study of OFDM and MC-CDMA, discussing spreading sequences, adaptive modulation and the attainable performance in synchronous environments
* Contains an advanced section on genetic algorithm aided joint multi-user channel estimation techniques for multi-user SDMA-OFDM
* Introduces an avant-garde design principle, which aims for directly minimizing the bit error ratio (BER) at the output of the multi-user OFDM system
As an introductory treatment of the complex subject of OFDM, this primer text will be attractive to a wide readership, including postgraduate students, systems and development engineers, as well as communications managers and practitioner.
Autoren/Hrsg.
Fachgebiete
Weitere Infos & Material
About the Authors.
Other Wiley and IEEE Press Books on Related Topics.
Acknowledgements.
1. Introduction.
1.1 Motivationof theBook.
1.2 Orthogonal Frequency Division Multiplexing History.
1.3 Outline of the Book.
1.4 ChapterSummaryandConclusion.
I OFDM System Design.
2. Introduction to Orthogonal Frequency Division Multiplexing.
2.1 Introduction.
2.2 Principles of QAM-OFDM.
2.3 Modulation by DFT.
2.4 Transmissionvia Bandlimited Channels.
2.5 Basic OFDM Modem Implementations.
2.6 Cyclic OFDM Symbol Extension.
2.7 Decision-Directed Adaptive Channel Equalisation.
2.8 OFDM Bandwidth Efficiency.
2.9 Chapter Summary and Conclusion.
3. OFDM Transmission over Gaussian Channels
3.1 Orthogonal Frequency Division Multiplexing.
3.2 Choice of the OFDM Modulation.
3.3 OFDM System Performance over AWGN Channels.
3.4 Clipping Amplification.
3.5 Analogue-to-Digital Conversion.
3.6 PhaseNoise.
3.7 Chapter Summary and Conclusion.
4. OFDM Transmission over Wideband Channels.
4.1 The Channel Model.
4.2 Effects of Time-Dispersive Channels on OFDM.
4.3 Channel Transfer Function Estimation.
4.4 System Performance.
4.5 Intersubcarrier Interference Cancellation.
4.6 Chapter Summary and Conclusion.
5. OFDM Time and Frequency Domain Synchronisation.
5.1 System Performance with Frequency and Timing Errors.
5.2 Synchronisation Algorithms.
5.3 Comparison of the Frequency Acquisition Algorithms.
5.4 BER Performance with Frequency Synchronisation.
5.5 Chapter Summary and Conclusion.
5.6 Appendix:OFDM Synchronisation Performance.
6. Adaptive Single- and Multi-user OFDM Techniques.
6.1 Introduction.
6.2 Adaptive Modulation for OFDM.
6.3 Adaptive OFDM Speech System.
6.4 Pre-equalisation.
6.5 Comparison of the Adaptive Techniques.
6.6 Near-Optimum Power- and Bit Allocation in OFDM.
6.7 Multi-User AOFDM.
6.8 Chapter Summary and Conclusion.
II. OFDM versus MC-CDMA Systems.
7. OFDM versus MC-CDMA.
7.1 Amalgamating DS-CDMA and OFDM.
7.3 Further Research Topics in MC-CDMA.
7.4 Chapter Summary and Conclusion.
8. Basic Spreading Sequences.
8.1 PN Sequences.
8.2 Orthogonal Codes.
8.3 Chapter Summary and Conclusion.
9. MC-CDMA Performance in Synchronous Environments.
9.1 The Frequency Selective Channel Model.
9.2 The System Model.
9.3 Single User Detection.
9.4 Multi-User Detection.
9.5 Chapter Summary and Conclusion.
III. Advanced Topics: Multi-User OFDM Systems.
10 Maximum-Likelihood Enhanced Sphere Decoding of MIMO-OFDM.
10.1 Classification of SmartAntennas.
10.2 Introduction to Space-Time Processing.
10.3 SDM-OFDM System Model.
10.4 Optimised Hierarchy Reduced Search Algorithm-Aided SDM Detection.
10.5 Chapter Summary and Conclusion.
11. Genetic Algorithm Aided Joint Channel Estimation and MUD for SDMA OFDM.
11.1 Introduction.
11.2 SDMA MIMO Channel Model.
11.3 System Overview.
11.4 GA-Aided Iterative Joint Channel Estimation and Multi-User Detection.
11.5 Simulation Results.
11.6 Chapter Summary and Conclusion.
12. Multi-User OFDM Employing Genetic Algorithm Aided Minimum Bit Error RateMulti-User Detection.
12.1 Introduction.
12.2 SystemModel.
12.3 GeneticAlgorithm.
12.4 SimulationResults.
12.5 ComplexityComparison.
12.6 ChapterSummaryandConclusion.
13. Conclusion and Further Research Problems.
13.1 Summary and Conclusions of Part I.
13.2 Summary and Conclusions of Part II.
13.3 Summary and Conclusions of Part III.
13.4 Closing Remarks.
Glossary.
Bibliography.
Subject Index.
Author Index.
