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 103
- Downloads 0
Performance, Combustion and Emission Characteristics of Corn oil blended with Diesel
Petroleum based fuels is a finite resource that is rapidly depleting. Consequently, petroleum reserves are not sufficient enough to last many years. Biodiesel is one of the alternative fuel made from vegetable oil,...
Performance Evaluation of Clustering Algorithms
Data mining is the process of analysing data from different viewpoints and summarizing it into useful information. Data mining tool allows users to analyse data from different dimensions or angles, categorize it, a...
Low Mobility Based Geographic Routing Strategy
In geographic routing, nodes need to maintain up-to-date positions of their immediate neighbours for making effective forwarding decisions. Periodic broadcasting of beacon packets regardless of the node mobility and traf...
Wireless Home Automation System with Acoustic Controlling
The proposed paper presents the design and implementation of a wireless home automation system with acoustic controlling. In this system, one voice recognition module has been added to the wireless network. The aut...
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...