A Technique COFDM For Improving Efficiency To Transmitted An Images Through Modulation Technique For Wireless Communication Problem
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2015, Vol 3, Issue 2
Abstract
The GSM & CDMA technologies has been widely used in wireless 3G system, But today 4G system wireless transmitter and receiver are used in communication. In this paper we presents novel method for used maximum spectral efficiency from Coded Orthogonal Frequency Division Multiplexing (COFDM) system, and simulate for the transmission of an image of the size of 11,878 bytes in 120*90. Where COFDM show the effect of band pass filtering, for use of a raised cosine guard period, modulation BER rate, clipping distortion, frequency offset errors, and time synchronization error. These techniques utilize the knowledge of the radio channel response, to optimize the frequency, and subcarrier modulation. Modulation independently optimizes the modulation scheme, applied to each subcarrier so that the spectral efficiency is maximum, while maintain a target Bit Error Rate (BER). Also study OFDM technology with multipath current status of COFDM research appears a suitable, technique to modulation technique for high performance wireless telecommunications. And here one possible crucial problem in receiver side where receiver may require a very large memory range in order to handle the large signal strength variation between Tx and Rx.
Authors and Affiliations
Ms. Deepti Agrawal, Dr. J. S. Yadav
Keywords
Related Articles
- EP ID EP19494
- DOI -
- Views 266
- Downloads 3
Ethno-medicinal Plants Used by the Tribal People of Shahdol District, Madhya Pradesh For The Treatment of Rheumatism
The present study deals with survey on ethno-medicinal plants of Shahdol district in Madhya Pradesh. A good number of plant species are being used by tribal and rural people for the treatment of joint diseases e.g. rheu...
Preserving Privacy of Data Using K-Anonymisation and T-Closeness
In recent years, the growth of Electronic Health Record (EHR) technology has increased the amount of clinical data being electronically available. Medical data, scientific documents, and also digitalised patient health...
Autonomous Vehicle with Obstacle Avoidance and Tracking
In this paper we proposes a driverless vehicle that has an onboard GPS module which is capable of driving the vehicle from one point to another without human operator. This system makes use of an Embedded System based o...
Study an Improvisation Method for Detecting Spoofed Attack in Wireless LAN
In terms of network security, spoofing is gaining illegitimate advantage by falsifying data. Spoofing can be done by a person or a program. Popularity of spoofing is increasing because of less precautions taken by appli...
Synthesis, Characterization and Magnetic Properties of Mn2+ Doped Cdga2-2xo4 Oxide Spinels
Mn2+ doped CdGa2-2xO4 oxide spinels with ‘x’ values ranging from 0.15, 0.30, 0.45, and 0.60 were synthesized by sol – gel method via nitrate citrate route. X-ray powder diffraction analysis confirms the presence of cubi...