Channel Estimation for OFDM

Liu, Yinsheng; Zhang, Tan; Hu, Hongjie; Cimini, Leonard J.; Li, Geoffrey Ye

doi:10.1109/comst.2014.2320074

Cited by 301 publications

(138 citation statements)

References 130 publications

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“…In the CO-OCDM system, receiver #2 is adopted for its efficiency. Channel estimation is achieved by the frequency-domain pilot designed for the CO-OFDM system [30], and it is also adopted for the proposed CO-OCDM system. The system setup is based on Fig.…”

Section: Analysis and Simulation Resultsmentioning

confidence: 99%

Orthogonal Chirp Division Multiplexing for Coherent Optical Fiber Communications

Ouyang¹,

Zhao²

2016

J. Lightwave Technol.

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Section: Analysis and Simulation Resultsmentioning

confidence: 99%

Orthogonal Chirp Division Multiplexing for Coherent Optical Fiber Communications

Ouyang¹,

Zhao²

2016

J. Lightwave Technol.

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“…CHANNEL ESTIMATION Many techniques regarding channel estimation on OFDM systems [17] can be used, each of them with its characteristics and many differences between them, like whether they use time or frequency domain samples, the complexity of the technique in question, performance and a priori information utilized. The latter can be made of sub-carrier's correlation in the frequency or time domains and the quantity of a priori information affects the estimation quality, so the more information of this type there is, the better the estimation.…”

Section: System Characterizationmentioning

confidence: 99%

Efficient channel estimation using TCH codes

Lopes

Catarino

Cercas

et al. 2017

2017 9th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT)

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“…In orthogonal frequency division multiplexing (OFDM) systems, a frequency selective (FS) channel is commuted into an accumulation of flat fading channels, which can be indemnified by simply using an equalizer of one-tap [1]. Therefore, OFDM can greatly alter the design of equalizer while enabling rather higher data rates, which leads that it is used as a vital physical layer in many commercial systems.…”

Section: Introductionmentioning

confidence: 99%

A Robust Estimation and Tracking of Channel for Time and Frequency Selective MIMO-OFDM Systems

Devi¹,

Babu²

2018

IJIES

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Due to the higher data transmission networks and maximum efficiency, multiple-input-multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) has become most vital wireless communications system in nowadays. Accurate estimation of channel under severe time and frequency selective fading channels has been required by these MIMO-OFDM systems for enabling high practical mobility. Established methods trust on nonrealistic estimations or result in impractical complexities. In this, we presented a new MIMO-OFDM channel estimation (CE) scheme for pilot length minimizing by designing novel pilot bits from the Hadamard matrices of Paley (HM-P) type I allows its orthogonal and diagonal constant matrix structures manipulations. Additionally, we also implemented a method which estimates the channel impulse response length to enamour existed number of multipath within the channel by stretching the length of pilot. Furthermore, our proposed channel estimation scheme modified to derive the initial fluctuation of channel and its Doppler rate, afterwards during the payload applied for tracking of MIMO channel using fast adaptive hybrid linear quadratic estimation (FAH-LQE) filter. Experimental analysis has done in MATLAB environment under Rayleigh distribution and achieved excellent channel estimation and channel tracking performances over the state-of-art channel estimation algorithms. Our proposed scheme also achieved lower diversity of transmitting bits by applying FAH-LQE filter and the superior estimation of channel under multipath conditions while increasing the number of pilot bits sent per transmitting antenna.

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Channel Estimation for OFDM

Cited by 301 publications

References 130 publications

Orthogonal Chirp Division Multiplexing for Coherent Optical Fiber Communications

Orthogonal Chirp Division Multiplexing for Coherent Optical Fiber Communications

Efficient channel estimation using TCH codes

A Robust Estimation and Tracking of Channel for Time and Frequency Selective MIMO-OFDM Systems

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