Exact Analysis of MIMO Channel Estimation Based on Superimposed Training

• Autorzy: Addad Mouad , Toaba Hanane Meriem , Djebbari Ali

Identyfikatory

DOI

10.26636/jtit.2024.2.1557

• Języki publikacji: EN

Abstrakty

EN

In this paper, channel estimation capabilities of a multiple-input multiple-output (MIMO) system using superimposed training sequences are investigated. A new expression for estimation-error variance is derived. It is shown that the training sequences must be balanced and must have specific correlation properties. The latter are required only in a specific zone. Sequences that satisfy these criteria exist and are referred to as zero-correlation zone (ZCZ) solutions. Consequently, by using balanced ZCZ sequences, harmful direct current (DC) offset can be removed. Owing to their zero-cross correlation, interference from other transmitting antennas may be eliminated. Furthermore, a closed-form expression of the estimation-error variance can be obtained due to their impulse-like autocorrelation. To increase the number of antennas in the MIMO system, a new construction of ZCZ sequence set is proposed, in which all sequences are balanced.

Słowa kluczowe

EN

channel estimation; DC offset; MIMO channel; superimposed training; ZCZ sequences

• Wydawca: Instytut Łączności - Państwowy Instytut Badawczy
• Czasopismo: Journal of Telecommunications and Information Technology
• Rocznik: 2024
• Tom: nr 2
• Strony: 104--112
• Opis fizyczny: Bibliogr. 16 poz., rys.

Twórcy

autor

Addad Mouad

• Djillali Liabes University, Sidi Bel Abbes, Algeria

• https://orcid.org/0000-0002-9336-5142

autor

Toaba Hanane Meriem

• Djillali Liabes University, Sidi Bel Abbes, Algeria

• https://orcid.org/0000-0003-4944-9290

autor

Djebbari Ali

• Djillali Liabes University, Sidi Bel Abbes, Algeria

• https://orcid.org/0000-0001-7931-4317

Bibliografia

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