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Title: Pilot Design for Sparse Channel Estimation in Orthogonal Frequency Division Multiplexing Systems, Journal of Telecommunications and Information Technology, 2018, nr 2

Creator:

Yamuna, G. ; Vimala, P.

Date:

2018, nr 2

Resource Type:

artykuł

Description:

Orthogonal Frequency Division Multiplexing (OFDM) is a well-known technique used in modern wide band wireless communication systems. Coherent OFDM systems achieve its advantages over a multipath fading channel, if channel impulse response is estimated precisely at the receiver. Pilot-aided channel estimation in wide band OFDM systems adopts the recently explored compressive sensing technique to decrease the transmission overhead of pilot subcarriers, since it exploits the inherent sparsity of the wireless fading channel. The accuracy of compressive sensing techniques in sparse channel estimation is based on the location of pilots among OFDM subcarriers. A sufficient condition for the optimal pilot selection from Sylow subgroups is derived. A Sylow subgroup does not exist for most practical OFDM systems. Therefore, a deterministic pilot search algorithm is described to select pilot locations based on minimizing coherence, along with minimum variance. Simulation results reveal the effectiveness of the proposed algorithm in terms of bit error rate, compared to the existing solutions.

Publisher:

National Institute of Telecommunications

Format:

application/pdf

Resource Identifier:

ISSN 1509-4553, on-line: ISSN 1899-8852 ; oai:bc.itl.waw.pl:2031

Source:

Journal of Telecommunications and Information Technology

Language:

ang

Rights Management:

Biblioteka Naukowa Instytutu Łączności

Subject and keywords:

channel estimation pilot pattern compressive sensing minimum coherence minimum variance

Object collections:

Last modified:

Aug 14, 2018

In our library since:

Aug 14, 2018

Number of object content hits:

73

All available object's versions:

https://ribes-54.man.poznan.pl/publication/2314

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Edition name Date
Vimala, P.; Yamuna, G., Pilot Design for Sparse Channel Estimation in Orthogonal Frequency Division Multiplexing Systems, Journal of Telecommunications and Information Technology, 2018, nr 2 Aug 14, 2018

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