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 136
- Downloads 0
Survey of Dimensionality Reduction and Mining Techniques on Scientific Data
Dimensionality reduction techniques on scientific data are currently a focused approach to understand the underlying scientific knowledge in a dataset resulted from scientific experiments and simulations. The sole purpos...
Hilditch’s Algorithm Based Tamil Character Recognition
Character identification plays a vital role in the contemporary world of Image processing. It can solve many composite problems and makes human’s work easier. An instance is Handwritten Character detection. Handwritten r...
Detection and Removal of Bad Smells instantly using a InsRefactor
Software refactoring is one of the essential techniques which are used to improve the software quality without affecting any of the external functionality of the software. There were numerous of software refactoring tool...
Bat algorithm based Softcomputing Approach to Perceive Hairline Bone Fracture in Medical X-ray Images
Detection of bone fracture is easy if it is an open fracture and we do not need any special mechanism to identify that. But in case of closed fracture that is, hairline bone fracture the case becomes complicated. It is n...
Malicious Code Detection through Data Mining Techniques
Nowadays computer systems and communication infrastructures are likely to be influenced by different types of attacks so there is need to put further efforts for improving the software trust. Therefore, there will be inc...