A detailed study of 4g in wireless communication : looking insight in issues in ofdm / Neelam Dewangan.

Format:

Book

Author/Creator:

Dewangan, Neelam, author.

Language:

English

Subjects (All):

Wireless communication systems--Germany.

Wireless communication systems.

Wireless communication systems--Technological innovations.

Physical Description:

1 online resource (93 p.)

Edition:

1st ed.

Place of Publication:

Hamburg, Germany : Anchor Academic Publishing, 2014.

Language Note:

English

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

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

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

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

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

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

Notes:

Description based upon print version of record.

Includes bibliographical references.

Description based on online resource; title from PDF title page (ebrary, viewed April 19, 2014).

ISBN:

3-95489-584-6

OCLC:

871779641