Performance Improvement in OFDM System with Interleaving and Blanking over Impulse Noise Environment
Journal Title: INTERNATIONAL JOURNAL OF ENGINEERING TRENDS AND TECHNOLOGY - Year 2014, Vol 9, Issue 7
Abstract
OFDM is a relatively new way to the field of digital communication but is finding more and more use due to its high spectral efficiency and robustness against interfering signal. Impulse noise is one of the major factors that can cause severe bit error performance degradation in OFDM systems. The impulse noise is usually of very short duration compared to symbol duration in parallel transmission. For both wired and wireless transmission, the frequency-selective fading is another significant source of disturbances for OFDM applications. The presence of these types of disturbances cause reliable communication difficult and also affects all the sub carriers in a symbol due to the Fast Fourier Transform operations at the receiver. TDI in conjunction with a two-level threshold-based blanking scheme is used to combat the effects of multipath propagation as well as IN. For the better performance of the system interleaving is used before and after the IFFT operation. An OFDM system with 64 qam modulation is considered. Gated Gaussian model is considered as the impulse noise model and compared the performance of different equalizers.
Authors and Affiliations
Merin Elsa Mathew , J. Jeevitha , Reethu K , Anusha Chacko
Keywords
Related Articles
- EP ID EP126492
- DOI -
- Views 115
- Downloads 0
A Survey on Mobile Data Gathering in Wireless Sensor Networks - Bounded Relay
Most of the wireless sensor networks consist of static sensors, which can be deployed in a wide environment for monitoring applications. While transmitting the data from source to static sink, the amount of energy consum...
Analysis of Skin Cancer Using Fuzzy and Wavelet Technique – Review & Proposed New Algorithm
This paper first reviews the past and present technologies for skin cancer detections along with their relevant tools. Then it goes on discussing briefly about features, advantages or drawbacks of each of them. The...
A Novel Approach to Implement a Vedic Multiplier for High Speed Applications
Now-a-days in VLSI technology speed optimization plays a vital role. So designing of high speed devices became necessary to fulfill the end user requirements. Generally the processor designing is mainly depending upon th...
Performance Analysis with Lifetime Optimization of LEACH Routing Protocol for Wireless Sensor Network
Advancement in technology like MEMS (micro electromechanical systems), wireless communication and digital electronics led the development of wireless sensor network. The distributed nature and dynamic topology of WSN (wi...
Enhancement of Speech Compression Technique Using Wavelet Transforms With Parallel Processing and Fusion
— The Discrete Wavelet Transform is the most powerful and new Since speech signal contains a large number of redundant information, how to compress high quality speech maintaining transparent quality at low bit rat...