Complex Number RS Coded OFDM by Unique Word Prefix
Journal Title: International Journal of Innovative Research in Computer Science and Technology - Year 2014, Vol 2, Issue 4
Abstract
In this paper, we introduced concept of unique word orthogonal frequency division multiplexing (UW-OFDM). In UW-OFDM instead of conventional cyclic prefixes (CPs) we use deterministic sequence, which we called unique word (UW’s), as a guard interval. Since Unique word represent known sequence they are advantageously be used for synchronization and channel estimation purposes. The UW’s are generated by approximately loding so called redundant subcarrier. We derived optimum complex valued code generator matrices matched to best linear unbiased estimator (BLUE) and to linear minimum mean square error (LMMSE) data estimator. With the help of simulations we highlight the superior bit error ratio (BER) performance of non-systematic coded UW-OFDM compared to systematic coded UW-OFDM and to CP-OFDM in additive white Gaussian noise (AWGN) as well as in frequency selective environments.
Authors and Affiliations
Mr. Nitinkumar M. Pachkawade, Mr. ManojM. Dongre
Keywords
Related Articles
- EP ID EP749183
- DOI -
- Views 36
- Downloads 0
Development and Analysis of Biometric Ingress Surveillance
Face recognition is a classic problem in the field of computer vision and popular due to its wide applications in real-world problems such as access control, identity verification, physical security, surveillance, etc. R...
A Study on Digital Mode Classes During COVID -19 and Its Level of Satisfaction On Online Education Among School Students in Delhi NCR
Around the world, online learning as well as classes are becoming a bigger part of the educational system. COVID-19 has caused a tremendous upheaval in the educational system, not only in India but globally. Virtual clas...
Analyzing Various Machine Learning Algorithms for Blockchain-Based Fraud Detection
A blockchain network's economics and user confidence can be seriously harmed by fraud. Consensus algorithms like proof of work and proof of stake can verify the legitimacy of a transaction but not the identity of the peo...
A Hardware Efficient FIR Filter for Wireless Sensor Networks
Finite-impulse response (FIR) Filter is widely used in wireless sensor networks as a signal pre-processing step. Because sensor nodes require a long working periods and ultra-low cost, traditional FIR structures are in a...
Comparative Study and Utilization of Best Deep Learning Algorithms for the Image Processing
Deep learning has gained immense popularity in scientific computing, and its algorithms are widely used in complex problem-solving industries. Every deep learning algorithm use different types of neural networks to perfo...