Joint Estimation of CFO and Channel Estimation for Rayleigh Fading Channel with Kalman Filter for OFDM System
Journal Title: International Journal of Research in Computer and Communication Technology - Year 2014, Vol 3, Issue 6
Abstract
Due to its high data rate transmission capability with high bandwidth efficiency and its robustness to multipath delay, the Orthogonal Frequency Division Multiplexing (OFDM) has recently been applied widely in wireless communication systems. In mobile radio applications, the relative motion between the receiver and the transmitter gives rise to a time varying channel and as a result, channel estimation is essential to acquire the channel so as to coherently decode the received signals. Also, the main problem with carrier frequency offset (CFO) is, it introduces ICI (Inter Carrier Interference) among the sub carriers in OFDM signal. This paper discusses the joint channel estimation in OFDM system using LS, MMSE and using Kalman filter and also discusses the CFO (Carrier Frequency Offset) estimation in OFDM system using Pilot symbols. The performances of all schemes are compared by finding the MSE and BER at different SNR values and at different CFO values at pilot locations, where QAM modulation scheme was used.
Authors and Affiliations
M. Harikrishna Reddy, K. Rajendra Prasad
Keywords
Related Articles
- EP ID EP27939
- DOI -
- Views 245
- Downloads 0
Pilot-Symbol Assisted Power Delay Profile Estimation for MIMO-OFDM Systems
In this paper a power delay profile (PDP) estimation technique is proposed for the linear minimum mean square error (LMMSE) channel estimator of multipleinput multiple-output orthogonal frequency division multiplexing...
Porting and board bring up of Mini2440 using U-boot and NFS server
U-boot (Universal Boot Loader) has more features and fast updating speed. More over it supports more number of file systems as compared to other boot loaders and customized boot process. This article, through config...
An Efficient Hindi Language Interface using Relational Databases
Database Management Systems have been used extensively for accessing, storing and retrieving data. However, database systems are not understandable to every user because they are hard to use. A plethora of egovernance...
A Novel Image Classification System Based on Evidence Probabilistic Transformation
This paper uses the evidence probabilistic transformation (EPT) for unsupervised image retrieval framework. The main advantages with EPT are substantially resolves the "take-them-or-leave-them" problem, gives a firme...
Secure Data Storage And Retrieve From Cloud Networking With Multiple Encrypt System
The proposed work is to characterize cloud structural engineering with designed samba stockpiling what's more cryptographic encryption systems. The cloud structural engineering sent with samba stockpiling uses workin...