Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/8322
Title: | Mitigating CFO in OFDM systems by exploring the symbol structure |
Author: | Ribeiro, C. Gameiro, A. |
Issue Date: | 2008 |
Publisher: | IEEE |
Abstract: | In this paper we revisit the carrier frequency offset (CFO) estimation and removal for broadband orthogonal frequency division multiplexing (OFDM) systems. We propose an algorithm that explores the time-domain (TD) properties of transmitted symbols carrying pilots and data. A careful examination of the components that constitute the TD received symbols leads to the definition of a simple, yet effective, cost function. In a real scenario, the cost function presents a bowl shape with a single global minimum easily identifiable (no local minima). The proposed method is independent of the channel estimation and decision, presenting a very low computational load. The feasibility of the investigated method is substantiated by system simulation using BRAN-A broadband wireless channel model. Simulation results show that the impact of the residual CFO in the system¿s performance is minimal. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/8322 |
DOI: | 10.1109/ISWCS.2008.4726014 |
ISBN: | 978-1-4244-2488-7 |
Publisher Version: | http://www.scopus.com/inward/record.url?eid=2-s2.0-62449101227&partnerID=40&md5=6a8c496abd66dec0c62289554f4341a5 |
Appears in Collections: | DETI - Comunicações |
Files in This Item:
File | Description | Size | Format | |
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ISWCS_08_camera_ready_paperID_64312.pdf | 233.01 kB | Adobe PDF | View/Open |
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