Carrier Frequency Offset estimation in the Presence of I/Q Mismatch for Wideband OFDM systems

Author

Xiaolong Wang ; Yuankun Xue ; Liang Liu ; Fan Ye ; Junyan Ren

Author_Institution

State-Key Lab. of ASIC & Syst., FUDAN Univ., Shanghai, China

fYear

2012

fDate

5-8 Aug. 2012

Firstpage

924

Lastpage

927

Abstract

This paper presents a data-aided Carrier Frequency Offset (CFO) estimation algorithm targeting the Wideband OFDM systems. Utilizing 3 consecutive preambles and processing them at frequency domain, the algorithm is robust to both Frequency Independent (F-I) and Frequency Dependent (F-D) I/Q Mismatch (I/Q-M). To evaluate the effectiveness of the proposed CFO estimation technique, we conduct extensive simulations based on Multi-Band OFDM Ultra-Wide Band wireless transmission. Compared to the ideal case when the CFO has been perfectly estimated, the performance loss at 8% Packet Error Rate (PER) is less than 0.5 dB.

Keywords

OFDM modulation; frequency estimation; frequency-domain analysis; ultra wideband communication; CFO estimation algorithm; F-D; F-I; PER; data-aided carrier frequency offset; frequency dependent I-Q mismatch; frequency domain; frequency independent I-Q mismatch; multiband OFDM ultra-wide band wireless transmission; packet error rate; wideband OFDM system; Estimation; Frequency estimation; Interference; Noise; OFDM; Robustness; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (MWSCAS), 2012 IEEE 55th International Midwest Symposium on

Conference_Location

Boise, ID

ISSN

1548-3746

Print_ISBN

978-1-4673-2526-4

Electronic_ISBN

1548-3746

Type

conf

DOI

10.1109/MWSCAS.2012.6292172

Filename

6292172