PAPR Reduction in OFDM Systems Using Partial Transmit Sequence PDF Download
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Author: Harish P.
Publisher:
ISBN: 9783659247484
Category :
Languages : en
Pages : 0
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Book Description
Author: Harish P.
Publisher:
ISBN: 9783659247484
Category :
Languages : en
Pages : 0
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Book Description
Author: Sze Yin Tang
Publisher:
ISBN:
Category : Functions, Orthogonal
Languages : en
Pages :
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Author: Neelam Dewangan
Publisher: GRIN Verlag
ISBN: 3656317364
Category : Technology & Engineering
Languages : en
Pages : 100
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Book Description
Master's Thesis from the year 2012 in the subject Engineering - Communication Technology, grade: none, , course: M.Tech, language: English, abstract: As a promising technique, OFDM has been widely used in emerging broadband communication systems, such as digital audio broadcasting (DAB), high-definition television (HDTV), 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 requires 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. A number of approaches have been proposed to deal with the PAPR problem, including clipping, clipping-and-filtering (CF), coding, companding transform, active constellation extension (ACE), selected mapping (SLM), partial transmit sequence (PTS), and so on. This thesis proposes an improvement in Selected Mapping technique and Simulation results are compared to existing techniques namely Exponential Companding Transform, Repeated Clipping and Filtering and Adaptive Active Constellation Extension. The improvements which are proposed in classical Selective Mapping technique satisfies the PAPR Reduction criteria with reducing the computational complexity. Also this new scheme has an important advantage of avoiding the extra bits along with the transmitted OFDM signal .This scheme can also be applied to the multiple transmitting antenna cases.
Author: Dr. RAJKUMAR L. BIRADAR
Publisher: Archers & Elevators Publishing House
ISBN: 8119385853
Category : Antiques & Collectibles
Languages : en
Pages : 85
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Author: Ahmed Mohamed Elshirkasi
Publisher:
ISBN:
Category :
Languages : en
Pages : 164
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Book Description
Future applications of communication systems require more data rate and mobility. Orthogonal frequency division multiplexing (OFDM) is one of the candidate techniques to achieve these requirements. However, OFDM implementation suffers from high peak to average power ratio (PAPR) of the transmitted signal. In this research, a nonlinear phase from the generalised discrete Fourier transform (GDFT) theory has been used to improve the PAPR reduction using partial transmit sequence (PTS) technique; one of the techniques used to reduced high PAPR in OFDM systems. This is done by multiplying the input OFDM block by M nonlinear phase vectors generated according to GDFT theory, then the optimal nonlinear phase vector is selected based on the autocorrelation properties of the multiplication result between the OFDM input block and each nonlinear phase vector. Results are given in terms of number of side information bits (m) used to represent the nonlinear phase. When m is 2, the performance of modified PTS of one sub-block gives as much PAPR reduction as the original PTS with two sub-blocks. When m is 4, the performance of modified PTS gives as much PAPR reduction as the original PTS with four subblocks. Additional PAPR reduction of about 0.5dB is achieved when m is raised to 6. Moreover, simulation showed that the distribution of the parameter bi which used to generate the nonlinear phase of GDFT, follows a uniform distribution and the bit error rate (BER) of the proposed system is sensitive to errors in the side information bits of the nonlinear phase, hence, requiting extra protection.
Author: Dr. Kailas S Patil
Publisher: Lulu.com
ISBN: 1794772650
Category :
Languages : en
Pages : 68
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Author: Emad Yacoub Qeryaqos Al-Dalakta
Publisher:
ISBN:
Category :
Languages : en
Pages : 177
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Book Description
Author: Nor Muzlifah Mahyuddin
Publisher: Springer
ISBN: 9789811681288
Category : Technology & Engineering
Languages : en
Pages : 1096
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Book Description
The proceeding is a collection of research papers presented at the 11th International Conference on Robotics, Vision, Signal Processing & Power Applications (RoViSP 2021). The theme of RoViSP 2021 “Enhancing Research and Innovation through the Fourth Industrial Revolution (IR 4.0)” served as a platform for researchers, scientists, engineers, academicians as well as industrial professionals from all around the globe to present and exchange their research findings and development activities through oral presentations. The book covers various topics of interest, including: Robotics, Control, Mechatronics and Automation Telecommunication Systems and Applications Electronic Design and Applications Vision, Image and Signal Processing Electrical Power, Energy and Industrial Applications Computer and Information Technology Biomedical Engineering and Applications Intelligent Systems Internet-of-things Mechatronics Mobile Technology
Author: Anusha Chacko
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659694226
Category :
Languages : en
Pages : 60
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Book Description
Orthogonal Frequency Division Multiplexing (OFDM) is a promising technology in wireless communication. High Peak-to-Average Power Ratio (PAPR) is one of the challenging issues of OFDM systems. High PAPR forces the High Power Amplifier (HPA) to operate in its linear region with wide dynamic range, where the power efficiency is very poor. This book gives an overview of different PAPR reduction techniques. And deals in detail with the efficient use of Selected Mapping (SLM) and Partial Transmit Sequence (PTS)technique to reduce high PAPR in OFDM systems.
Author: Natarajan Meghanathan
Publisher: Springer Science & Business Media
ISBN: 3642315135
Category : Technology & Engineering
Languages : en
Pages : 800
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Book Description
The international conference on Advances in Computing and Information technology (ACITY 2012) provides an excellent international forum for both academics and professionals for sharing knowledge and results in theory, methodology and applications of Computer Science and Information Technology. The Second International Conference on Advances in Computing and Information technology (ACITY 2012), held in Chennai, India, during July 13-15, 2012, covered a number of topics in all major fields of Computer Science and Information Technology including: networking and communications, network security and applications, web and internet computing, ubiquitous computing, algorithms, bioinformatics, digital image processing and pattern recognition, artificial intelligence, soft computing and applications. Upon a strength review process, a number of high-quality, presenting not only innovative ideas but also a founded evaluation and a strong argumentation of the same, were selected and collected in the present proceedings, that is composed of three different volumes.
