An OFDM Carrier Frequency Offset Estimation Scheme with Wide Fractional Offset Estimation Range
نویسندگان
چکیده
منابع مشابه
An OFDM Carrier Frequency Offset Estimation Scheme with Wide Fractional Offset Estimation Range
In this paper, we propose a carrier frequency offset (CFO) estimation scheme which is robust to the fractional CFO variation for orthogonal frequency division multiplexing (OFDM) systems. The proposed scheme first performs the envelope equalization process to convert the offset estimation problem to a carrier estimation problem, and then, estimates the integer and fractional parts of CFO by usi...
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Orthogonal Frequency Division Multiplexing (OFDM) is multicarrier modulation scheme for combating channel impairments such as severe multipath fading and impulsive noise. However, the principal disadvantage of OFDM is that it is highly susceptible to carrier frequency offset (CFO). Carrier frequency offset occurs due to frequency discrepancies between transmitter and receiver and Doppler shift ...
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In wireless communications systems, Orthogonal Frequency Division Multiplexing (OFDM) and Multiple Input Multiple Output (MIMO) are used to improve spectral efficiency and spatial diversity. Beamforming is used to improve bandwidth utilization. It increases the network range in wireless systems. The main challenge of OFDM system is Carrier frequency offset (CFO). The project focuses on CFO esti...
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In this paper we present two extensions to a previously published OFDM carrier frequency-offset estimation method. The previously presented algorithm is based on locating the spectral minimas within so-called null or virtual subcarriers embedded in the spectrum. In this paper we develop this idea further by using a steepest descent method to find the minima and the estimate. We also study the e...
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Orthogonal frequency division multiplexing (OFDM) is a popular method for high data rate wireless transmission. The performance of OFDM system is very sensitive to carrier frequency Offset (CFO), which introduces inter-carrier interference (ICI). Multi-input multi-output system used for increasing diversity gain and capacity of the system. Alamouti space time block code is used for MIMO transmi...
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ژورنال
عنوان ژورنال: Journal of Applied Research and Technology
سال: 2013
ISSN: 1665-6423
DOI: 10.1016/s1665-6423(13)71530-x