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Title: New OSTBC for Blind Channel Estimation and Tracking in MIMO-OFDM Systems, Journal of Telecommunications and Information Technology, 2019, nr 3

Creator:

Keche, Mokhtar ; Tami, Abdelkader ; Bouazza, Boubaker S.

Date:

2019, nr 3

Resource Type:

artykuł

Description:

Applying orthogonal space time block coding (OSTBC) to multiple-input multiple-output (MIMO) systems helps reduce receiver complexity. However, this approach has been applied only to flat fading channels, as when the channel is a frequency selective fading MIMO channel, OSTBC cannot be used directly since its orthogonal propriety may be lost. Furthermore, the MIMO channel is not always known. To deal with this problem, many techniques were proposed to estimate the channel using a training sequence. Unfortunately, these techniques reduce the useful spectral bandwidth. This paper proposes OSTBC for blind channel estimation and data detection in the case of a MIMO frequency selective channel. The aim of this new OSTBC is twofold: to solve the ambiguity of channel estimation and to reduce the complexity of the detector. By exploiting the well-known technique of orthogonal frequency division multiplexing (OFDM), the frequency selective fading MIMO channel is split into a set of flat fading subchannels. Moreover, to accommodate the fact that a MIMO channel can be time varying, the steady state Kalman channel estimator (SS-KCE) is extended to track the channel’s fast variations. The performance of the proposed blind algorithm is related by the adequate choice of the number of subcarriers and it is compared with other existing approaches by means of Monte Carlo simulations.

Publisher:

National Institute of Telecommunications

Format:

application/pdf

Resource Identifier:

ISSN 1509-4553, on-line: ISSN 1899-8852 ; oai:bc.itl.waw.pl:2104

Source:

Journal of Telecommunications and Information Technology

Language:

ang

Rights Management:

Biblioteka Naukowa Instytutu Łączności

Subject and keywords:

MIMO OFDM OSTBC blind channel estimation SS-KCE

Object collections:

Last modified:

Oct 28, 2019

In our library since:

Oct 28, 2019

Number of object content hits:

102

All available object's versions:

https://bc.itl.waw.pl/publication/2394

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Edition name Date
Tami, Abdelkader; Keche, Mokhtar; Bouazza, Boubaker S., New OSTBC for Blind Channel Estimation and Tracking in MIMO-OFDM Systems, Journal of Telecommunications and Information Technology, 2019, nr 3 Oct 28, 2019

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