Başlık için Bildiri Koleksiyonu listeleme
Toplam kayıt 199, listelenen: 59-78
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Enhancing physical-layer security in wireless communications using signal space diversity
(Institute of Electrical and Electronics Engineers Inc., 2016)In this paper, we enhance the security of OFDM systems in frequency selective fading channels using signal space diversity. In rich multipath environments, spatially separated channels are independent to each other. Hence, ... -
Enhancing the security performance of ostbc using pre-equalicodization
(Institute of Electrical and Electronics Engineers Inc., 2017)In this study, we first quantify the secrecy performance achieved by employing precoded orthogonal space time block coding (POSTBC) in order to use it as a benchmark for comparison purposes with a new proposed security ... -
Estimating multi-dimensional sparsity level for spectrum sensing
(Institute of Electrical and Electronics Engineers Inc., 2023)Identifying spectrum opportunities is a crucial element of efficient spectrum utilization for future wireless networks. Spectrum sensing offers a convenient means for revealing such opportunities. Studies showed that usage ... -
Estimation and exploitation of multidimensional sparsity for MIMO-OFDM channel estimation
(Institute of Electrical and Electronics Engineers Inc., 2022)Obtaining accurate channel state estimates at reasonable training overheads remains a big challenge for the applicability of multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM). Recently, ... -
A European view on the next generation optical wireless communication standard
(Institute of Electrical and Electronics Engineers, 2015)Optical wireless technology uses light for mobile communications. The idea is to simultaneously combine the illumination provided by modern high-power light-emitting diodes (LEDs) with high-speed wireless communications. ... -
The evaluation of FFR for interference management in coordinated hybrid terrestrial-aerial network
(Institute of Electrical and Electronics Engineers Inc., 2019)Recent works have tried to incorporate unmanned aerial vehicle (UAV) base stations in conventional networks, however, the inter-cell interference mitigation techniques for such networks have not been studied comprehensively. ... -
Experimental characterization of in vivo radio channel at MICS and ISM Bands
(Electromagnetics Academy, 2015)This paper presents an experimental study for the propagation losses and wave attenuation inside human body for implanted antenna at different body organs. The experimental study discusses the commonly used frequency bands: ... -
Experimental validation of a novel RLL code for visible light communication
(IEEE-Institute of Electrical and Electronics Engineers Inc, 2020)Flicker arising in visible light communication (VLC) system is typically mitigated by run-length-limited (RLL) codes. The IEEE 802.15.7 standard proposes RLL codes according to the modulation type and data rate. In this ... -
Exploiting OTFS frame structure for PAPR reduction
(Institute of Electrical and Electronics Engineers Inc., 2022)Wireless technologies have always been the cornerstone of industrial progress. However, as industrial technologies have improved and advanced services have emerged, the demands of industry have meant that wireless technologies ... -
Fabrication of capacitive micromachined ultrasonic transducers with through-glass-via interconnects
(Institute of Electrical and Electronics Engineers, 2015)This paper introduces a novel fabrication method for capacitive micromachined ultrasonic transducer (CMUT) arrays amenable to 3D integration. The work demonstrates that MEMS structures can be directly built on a through-glass-via ... -
FDD massive MIMO downlink channel estimation via selective sparse coding over AOA/AOD cluster dictionaries
(Institute of Electrical and Electronics Engineers Inc., 2018)Sparse coding over a redundant dictionary has recently been used as a framework for downlink channel estimation in frequency division duplex massive multiple-input multiple-output antenna systems. This usage allows for ... -
A flexible hybrid waveform
(Institute of Electrical and Electronics Engineers Inc., 2017)Cellular systems of fifth generation (5G) require a waveform with flexible guard interval length along with a low power consumption. Different cyclic prefix (CP) durations in long term evolution (LTE) result in loss of ... -
Floating OFDM-SNM for PAPR and OOBE reduction
(Institute of Electrical and Electronics Engineers Inc., 2021)The novel orthogonal frequency division multiplexing with subcarrier number modulation (OFDM-SNM) transmission scheme offers high spectral and energy efficiency compared to the conventional OFDM; this is due to the extra ... -
Fm channel model development and its emulator
(Institute of Electrical and Electronics Engineers Inc., 2018)With the widespread availability of Internet, voice only broadcast in the FM Band will soon be abandoned as Internet Radio can provide the same content with no boundaries. The available band can then be exploited for ... -
Frequency division multiplexed imaging: A Texas Instruments DMD implementation
(SPIE-Int Soc Optical Engineering SPIE, 2014)Recently we proposed frequency division multiplexed imaging (FDMI), which allows capturing multiple images in a single shot through spatial modulation and frequency domain filtering. This is achieved by spatially modulating ... -
Game theoretical partially overlapping filtered multi-tones in cognitive heterogeneous networks
(Institute of Electrical and Electronics Engineers Inc., 2014)Partially overlapping tones have recently been paid attention to by the researchers in cognitive heterogeneous networks (HetNets). In this paper, we introduce partial overlapping in the filtered multi-tones instead of full ... -
Geniş alan görüntülerinde anomali tespiti
(Institute of Electrical and Electronics Engineers Inc., 2021)Bu çalışma hava araçlarından çekilmiş geniş alan görüntülerindeki anomalileri tespit etmek ile ilgilidir. Anomali kümesi normal seyrin dışındaki her şey olarak belirlenmiştir. Bu amaçla iki farklı veri seti kullanılmış ve ... -
Gerçek zamanlı 5G teknoloji geliştirme platformu
(IEEE, 2017)5G teknolojilerinin olgunluk seviyelerinin yükseltilmesi donanım geliştirme faaliyetlerini gerektirir ve altyapının yeterliliği önem arz etmektedir. Bu bildiride, 5G araştırma sonuçlarının ürünleşmesine destek olmak amacıyla ... -
Görünür ışık haberleşmesi için son denkleştirme gerçekleştiren opto-elektronik alıcı sistemi
(Institute of Electrical and Electronics Engineers Inc., 2020)Bu bildiride, görünür ışık haberleşme sistemi için opto-elektronik alıcı devre tasarımı yapılarak veri hızında önemli bir artış gerçekleştirilmiştir. Görünür haberleşme sisteminde verici taratfa kullanılan LED’ler sınırlı ... -
Görünür ışık haberleşmesinde mesafe ve güce bağlı kanal modeli deneysel doğrulaması
(IEEE-Inst Electrical Electronics Engineering Inc, 2019)Bu bildiride, görünür ışık haberleşme sisteminde direkt görüş hattı için kanal modellemesi problemi ele alınmıştır. Sunulan kanal modelinde LED ve fotodiyot arasında filtre veya mercek gibi herhangi bir optik ...
