LEADER 04822nam 2200589 450 001 9910813521903321 005 20230803195430.0 010 $a3-95489-584-6 035 $a(CKB)2670000000534295 035 $a(EBL)1640287 035 $a(SSID)ssj0001215346 035 $a(PQKBManifestationID)11783445 035 $a(PQKBTitleCode)TC0001215346 035 $a(PQKBWorkID)11174749 035 $a(PQKB)10274996 035 $a(MiAaPQ)EBC1640287 035 $a(Au-PeEL)EBL1640287 035 $a(CaPaEBR)ebr10856458 035 $a(OCoLC)871779641 035 $a(EXLCZ)992670000000534295 100 $a20140421h20142014 uy 0 101 0 $aeng 135 $aur|n|---||||| 181 $ctxt 182 $cc 183 $acr 200 12$aA detailed study of 4g in wireless communication $elooking insight in issues in ofdm /$fNeelam Dewangan 210 1$aHamburg, Germany :$cAnchor Academic Publishing,$d2014. 210 4$d?2014 215 $a1 online resource (93 p.) 300 $aDescription based upon print version of record. 311 $a3-95489-084-4 320 $aIncludes bibliographical references. 327 $aA 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 327 $a2.1 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 327 $a4.5 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 327 $a7.2 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 327 $a7.10 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 330 $aAs 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 606 $aWireless communication systems$zGermany 606 $aWireless communication systems$xTechnological innovations 615 0$aWireless communication systems 615 0$aWireless communication systems$xTechnological innovations. 676 $a621.382 700 $aDewangan$b Neelam$01690256 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910813521903321 996 $aA detailed study of 4g in wireless communication$94065855 997 $aUNINA