Effect of Different Modulation on PAPR and Its Reduction
Journal Title: International Journal of Computer Science & Engineering Technology - Year 2012, Vol 3, Issue 8
Abstract
As the technology grow in wireless communication, the concept of multicarrier modulation come into picture. Orthogonal Frequency Division Multiplex(OFDM) prove itself invaluable for multicarrier modulation.OFDM subcarriers can overlap to make full use of the spectrum but at the peak of each subcarriers spectrum, the power in all the other subcarriers is zero. One of the major disadvantages of OFDM signal is large PAPR, which require power amplifier with large linear (gain) ranges. But to increase efficiency of power amplifier it gain become nonlinear and corresponding OFDM signal distort. So, a need for technique which reduces PAPR.Selective Mapping with phase rotation is one of the techniques to reduce PAPR .In this paper we have to compare the effect of different modulation (QPSK, DQPSK, and 4-QAM) on PAPR value of OFDM signal and its reduction by using selective mapping phase rotation method.
Authors and Affiliations
Ritesh Baranwal , Anil Kumar , Prof (Dr. ) C. K. Shukla
Keywords
Related Articles
- EP ID EP98050
- DOI -
- Views 134
- Downloads 0
Survey on Clustering Techniques of Data Mining
The goal of this survey is to provide a comprehensive review of different clustering techniques in data mining. Data mining refers to extracting useful information from vast amounts of data. It is the process of discover...
Intrusion Detection System with Data Stream Modeling using Conditional Privileges
IDS for computer network is capable of detecting and alerting the systems administrator on potential intrusion, providing guidance against any potential loss of integrity and confidentiality to the enterprise’s valuable...
System for Devices mobile based in recognition facial
In this paper is documents the development of the work of a security system for mobile devices based on Facial recognition. This recognition is based on the algorithm of Wu and SUSAN, it was obtained for 80% efficiency a...
Power-Time Efficient Algorithm for Computing Reconfigurable FFT in Wireless Sensor Network
Wireless sensor network have several constraints, such as a short transmission range, poor processing capabilities, limited available power and slow execution time. The design of algorithms for fast processing of informa...
Concept-Based Document Similarity Based on Suffix Tree Document
Document clustering has been studied as a post retrieval document visualization technique to provide an intuitive navigation and browsing mechanism by organizing documents into groups and each group represents a differen...