Channel Estimation in OFDM Mobile Wireless Channel Using Pilot Sequences
Journal Title: INTERNATIONAL JOURNAL OF ENGINEERING TRENDS AND TECHNOLOGY - Year 2013, Vol 4, Issue 3
Abstract
Error free transmission is one of the main aims in wireless communications. With the increase in multimedia application, large amount of data is being transmitted over wireless communications. Due to the channel fading and the Doppler shifts caused by user mobility, a common problem in wireless systems, additional technologies are needed to combat multipath propagation fading and Doppler shifts. Time-variant channel estimation is one such crucial technique used to improve the performance of the modern wireless systems with Doppler spread and multipath spread. In this paper, we present the improved scheme of LS based channel estimation technique using block type pilot sequences. Channel estimation is done by estimating the time-varying channel frequency response for the OFDM symbols. The Least Square (LS) method is used for channel estimation technique using the block type pilot sequences. Time-variant channel estimation using pilot Sequences technique is a useful channel estimation technique in mobile wireless communication for accurately estimating transmitted information. The main advantage of pilot sequence is allowing more accurate representation of high mobility mobile wireless channels with low complexity. The MATLAB/SIMULINK Communication tool box is used for implement the proposed model. Due to channel interference, the accuracy of channel estimation is an essential factor for a good receiver design in order to exploit the full potential capacity of the OFDM systems. The main goal is to test the recently proposed method, timevariant channel estimation using pilot sequences.
Authors and Affiliations
Vikas Kumar Batav#1 , Brajlata Chourasiya#
Keywords
Related Articles
- EP ID EP93287
- DOI -
- Views 106
- Downloads 0
Dynamic Discovery and Invocation of Web services Through Android Mobile
In this paper we are proposing an efficient and novel architecture for dynamic invocation and discovery of web services in mobile. While we are handling with the mobile, we need to consider the resources of the...
Design of Remote Intelligent Smart Home System Based on Zigbee and GSM Technology
Based on ZIGBEE and GPRS technology a wireless remote and smart home security system has developed. Wireless remote systems for smart home application is developed to analysis and detect the status of home equipm...
Biogas Generation Plant Based On Kitchen Waste Material
Millions of cubic meters of methane in the form of biogas are produced every year by the decomposition of organic matter, both animal and vegetable. It is almost identical to the natural gas pumped out of the ground by t...
Multilingual Person Identification
Speech conveys the word being spoken and information about the speakers. The speaker recognition is divided into two parts speaker identification and speaker verification. Present paper explores the idea to identify mult...
Separation Of Delta,Theta,Alpha & Beta Activities In EEG To Measure The Depth Of Sleep And Mental Status
The electrical activity of the human brain i.e. the EEG and its classification into various frequency bands has been of interest to researches dealing with neurology. So, here our aim is targeted to classify EEG sign...