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Bulunan: 11 Adet 0.002 sn
Arş. Gör. Büşra CENİKLİOĞLUElektrik-Elektronik Mühendisliği
Erişime Açık

ZT DWT-S OWDM: A new waveform for PAPR reduction

Ali ÖZEN | Büşra CENİKLİOĞLU

In this study, a novel zero tail discrete wavelet transform spread orthogonal wavelet division multiplexing (ZT DWT-S OWDM) waveform design has been proposed as a solution to the problem of poor peak to average power ratio (PAPR) performance of conventional orthogonal frequency division multiplexing (OFDM) systems. The effects of different waveletfamilies such as Haar, Daubechies, Symlets, Coiflets and Bi-Orthogonal on PAPR performance of ZT DWT-S OWDM systems are investigated. Computer simulation studies are carried out to compare the ZT DWT-S OWDM waveform with the conventional OFDM and zero ...Daha fazlası

Erişime Açık

5G ötesi kablosuz haberleşme sistemleri için donanımsal hatalara sahip OFDM-IM tekniklerinin performansının incelenmesi

Büşra CENİKLİOĞLU

Projenin amacı donanımsal hataları içeren OFDM-IM teknikleri için yeni algoritmalar geliştirerek çeşitli kanal ortamlarında performans analizi yapmaktır.

Erişime Açık

Error analysis of the joint localization and synchronization of RIS-Assisted mm-Wave MISO-OFDM under the effect of hardware impairments

Büşra CENİKLİOĞLU

This work investigates the theoretical bounds of the joint localization and synchronization processes in a reconfigurable intelligent surface (RIS)-assisted system. We address the case of millimeter-wave (mm-Wave) multiple-input single-output (MISO) orthogonal frequency-division multiplexing (OFDM) with non-ideal transceivers. Considering a single antenna mobile station (MS) aims to estimate the parameters of the downlinks from the base station (BS) and the RIS by observing a known sequence received by the MS directly from the BS and indirectly through the RIS. The theoretical bounds of the es ...Daha fazlası

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Error bounds for 3d localization and maximum likelihood estimation of mm-Wave MISO OFDM systems in the presence of hardware impairments

Büşra CENİKLİOĞLU

— Millimeter-wave (mm-wave) multiple-input singleoutput (MISO) systems are expected to be extremely advantageous for the fifth generation (5G) cellular systems. In fact, these systems are considered key enablers of centimeter-level localization accuracy, even in the case of a single base station (BS). However, there are still fundamental issues that need to be addressed when applying mm-wave MISO systems to practical scenarios, namely the effects of hardware impairments (HWIs). In this study, the 3D localization accuracy of mm-wave MISO OFDM systems is investigated when there are HWIs at both ...Daha fazlası

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Performance analysis of different high-level modulation techniques for OFDM-IM system Farklı yüksek seviyeli modülasyon tekniklerinde OFDM-IM sisteminin performansının analizi

Büşra CENİKOĞLU

Multicarrier transmission becomes a key technology that is used in many wireless standards for wideband digital communications in recent years. Orthogonal frequency division multiplexing (OFDM) which is utilized in numberless high data rate has been the most popular multicarrier transmission technique in wireless communication systems. Alternatively, index modulation (IM), in which the indices of the building blocks of the considered wireless communication systems are used to convey additional information bits, is a novel digital modulation scheme with high spectral and energy efficiency. Orth ...Daha fazlası

Erişime Açık

Analysis of average bit error rate for OFDM-IM systems with hardware impairments over nakagami-m and weibull fading channels

Büşra CENİKLİOĞLU

Orthogonal frequency division multiplexing together with index modulation (OFDM-IM) is a brilliant key alternative to the traditional orthogonal frequency division multiplexing (OFDM) schemes for future communication technologies whereby it has high spectral and energy efficiency. However, there are still key issues that need to be adressed to evaluate possible applications in practical systems. Accordingly, we investigate the performance of OFDM-IM systems over Nakagami-m and Weibull fading channels that suffer from transceiver hardware impairments (HWIs) in this paper. Specifically, a maximu ...Daha fazlası

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