Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/69796
Title: Decoupled maximum likelihood blind carrier offset estimator for OFDM systems
Authors: Miaomiao, L.
Nallanathan, A. 
Tjhung, T.T.
Issue Date: 2004
Source: Miaomiao, L.,Nallanathan, A.,Tjhung, T.T. (2004). Decoupled maximum likelihood blind carrier offset estimator for OFDM systems. IEEE Vehicular Technology Conference 60 (1) : 507-510. ScholarBank@NUS Repository.
Abstract: In orthogonal frequency division multiplexing (OFDM) communication systems, the loss of orthogonality between the sub-carriers due to carrier-frequency offset can degrade the performance of the system. It must be compensated before the discrete Fourier transform-based demodulation. The estimation procedure based on the traditional maximum likelihood (ML) criterion usually relies on the excess cyclic prefix (CP) symbols of OFDM system, hence reduces the bandwidth efficiency of the system when multipath channel is involved. In this paper, we present a decoupled maximum likelihood blind estimation method, which doesn't rely on the structure of CP. This method is suboptimum. However, it is shown that the performance of the proposed method is better than the existing blind carrier offset estimation methods. This method works well even if the SNR is very low.
Source Title: IEEE Vehicular Technology Conference
URI: http://scholarbank.nus.edu.sg/handle/10635/69796
ISSN: 15502252
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

14
checked on Dec 16, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.