A new phase and frequency offset estimation algorithm for OFDM systems applying Kalman filter

Perets, Rita; Bobrovsky, B.Z.

doi:10.1109/eeei.2002.1178470

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…Frequency offset estimation problem was considered in [15]. Extended Kalman filter (EKF) was applied in [16] to jointly estimate code delay and multipath channel parameters in the context of CDMA systems.…”

Section: Introductionmentioning

confidence: 99%

Joint Time-Domain Tracking of Channel and Frequency Offsets for MIMO OFDM Systems

Roman

Enescu

Koivunen

2004

Wireless Pers Commun

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In this paper we address the problem of joint channel and frequency offset estimation and tracking in multiple-input multiple-output (MIMO) OFDM systems for mobile users. The proposed method stems from extended Kalman filtering and is suitable for time-frequency-space selective channels. Separate offset for each MIMO channel branch is considered because of the mobility and rich scattering. The channel taps and the frequency offsets are estimated in time-domain while the equalization is performed in frequency domain. Simulation results demonstrate that the proposed method tracks time-varying channels and frequency offsets with high fidelity. Realistic channel models are used in mobile scenarios. The proposed time-domain approach has improved performance and robustness in comparison to purely frequency domain processing. Computational complexity is lower as well.

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Section: Introductionmentioning

confidence: 99%

Joint Time-Domain Tracking of Channel and Frequency Offsets for MIMO OFDM Systems

Roman

Enescu

Koivunen

2004

Wireless Pers Commun

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“…This ideal array has a burst loss probability of 3×10 −6 . This performance can be attained in practice by decoding the error correcting code for each tracker output, and selecting the one with the smallest metric [6]. DD PD is decision directed with no use of preamble.…”

Section: Phase Detectormentioning

confidence: 99%

Threshold extension with Kalman array for synchronization of burst communication

Davidson¹,

Bobrovsky

2004

IEICE Electron. Express

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The attainable Frame Error Rate (FER) in satellite burst communication is much too high when a classical Costas Loop is used as the carrier synchronizer. This high FER is due to cycle slips and hang-up of the Costas Loop. We demonstrate the potential to achieve a FER of 3×10 −6 using 3 parallel Kalman tracking loops with their initial frequencies spaced apart. We also propose an algorithm for selecting the correct loop for demodulation and use data aided and optimal phase detection for the preamble and payload respectively. This dramatic improvement is at a reasonable complexity.

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A pilot-symbols-aided unscented Kalman filter for carrier phase recovery in the wide-linewidth short-range coherent optical transmission systems

Liu

Guo

et al. 2020

Optical Fiber Technology

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A new phase and frequency offset estimation algorithm for OFDM systems applying Kalman filter

Cited by 4 publications

References 5 publications

Joint Time-Domain Tracking of Channel and Frequency Offsets for MIMO OFDM Systems

Joint Time-Domain Tracking of Channel and Frequency Offsets for MIMO OFDM Systems

Threshold extension with Kalman array for synchronization of burst communication

A pilot-symbols-aided unscented Kalman filter for carrier phase recovery in the wide-linewidth short-range coherent optical transmission systems

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