| Description |
1 online resource (93 pages) : illustrations (some color), tables |
| Physical Medium |
polychrome |
| Description |
text file |
| Bibliography |
Includes bibliographical references. |
| Contents |
A detailed Study of 4G in Wireless Communication; Table of contents; CHAPTER 1 Introduction; 1.1 Introduction to Long term evolution (LTE); 1.2 Technologies involved; 1.3 Brief History of OFDM; 1.4 Basic Concepts; 1.5 Introduction to OFDM; 1.6 SC-FDMA and OFDMA Tx-Rx Structure; 1.7 Inter -- Symbol Interference(ISI); 1.8 Inter -- Carrier Interference; 1.9 Understanding Concept of Cyclic Prefix; 1.10 OFDM using Inverse DFT; 1.11 Advantages of OFDM; 1.12 Disadvantages of OFDM; 1.13 Peak to Average Power Ratio; 1.14 PAPR Reduction Techniques; CHAPTER 2 Literature Review |
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2.1 Different methods for Peak-to-Average Power (PAPR) Reduction in Orthogonal Frequency Division Multiplexing (OFDM)CHAPTER 3 PROBLEM IDENTIFICATION; 3.1 Clipping and Filtering; 3.2 Coding; 3.3 Interleaving; 3.4 Companding; 3.5 Peak Windowing; 3.6 Additive Correcting Function; 3.7 Selected Mapping (SLM); 3.8 Tone Reservation; 3.9 Tone Injection; 3.10 Selective Scrambling (Interleaving); CHAPTER 4 METHODOLOGY; 4.1 Objectives; 4.2 Hardware and Software Required; 4.3 Simulation model of OFDM System; 4.4Calculation of PAPR and CCDF of Original OFDM Signal |
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4.5 Complimentary Cumulative Distribution Function (CCDF)4.6 Calculation of SNR and BER of Original OFDM Signal; 4.7 Criteria for selection of PAPR reduction techniques; 4.8 Definition of Efficient PAPR; CHAPTER 5 PAPR REDUCTION TECHNIQUES; 5.1 SELECTIVE MAPPING; 5.2 Clipping -- Based Active Constellation Extension Algorithm; 5.3 Exponential Companding Transform; 5.4 Adaptive Active Constellation Extension Algorithm; CHAPTER 6 PROPOSED METHOD; 6.1 Selected Mapping With Riemann Matrix; 6.2 Concept of Riemann matrices; CHAPTER 7 RESULTS AND DISCUSSION; 7.1 PAPR vs CCDF of Original OFDM Signal |
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7.2 BER of Original OFDM Signal7.3 PAPR vs CCDF of OFDM Signal by using Selective Mapping (SLM) Technique; 7.4 CCDF Plot for Clipping-Based Active Constellation Extension (CB-ACE) Technique; 7.5 BER Plot for Clipping-Based Active Constellation Extension (CB-ACE) Technique; 7.6 CCDF Plot for Adaptive Active Constellation Extension (Adaptive -ACE) Technique; 7.7 BER Plot for Adaptive Active Constellation Extension (Adaptive -ACE) Technique; 7.8 CCDF Plot for Exponential Companding Technique; 7.9 BER Plot for Exponential Companding Technique |
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7.10 CCDF Plot for Proposed Technique- SLM with Riemann Matrix7.11 BER Plot for Proposed Technique- SLM with Riemann Matrix; CHAPTER 8 CONCLUSION AND FUTURE SCOPE; RESEARCH PAPER PUBLISHED; REFERENCES |
| Summary |
As a promising technique, OFDM has been widely used in emerging broadband communication systems, such as digital audio broadcasting (DAB), high-definition television (HDTV), and wireless local area network (IEEE 802.11a and HIPERLAN/2). However, as the OFDM signals are the sum of signals with random amplitude and phase, they are likely to have large PAPR that require a linear high-power- amplifier (HPA) with an extremely high dynamic range which is expensive and inefficient. Furthermore, any amplifier nonlinearity causes intermodulation products resulting in unwanted out-of-band power. |
| Local Note |
eBooks on EBSCOhost EBSCO eBook Subscription Academic Collection - North America |
| Subject |
Wireless communication systems -- Germany.
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Wireless communication systems. |
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Germany. |
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Wireless communication systems -- Technological innovations.
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Wireless communication systems -- Technological innovations. |
| Genre/Form |
Electronic books.
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| Other Form: |
Print version: Dewangan, Neelam. Detailed study of 4g in wireless communication : looking insight in issues in ofdm. Hamburg, Germany : Anchor Academic Publishing, ©2014 86 pages 9783954890842 |
| ISBN |
9783954895847 (electronic book) |
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3954895846 (electronic book) |
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9783954890842 |
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