Multidimensional signal analysis for wireless communications systems
Başlık çevirisi mevcut değil.
- Tez No: 401045
- Danışmanlar: PROF. HÜSEYİN ARSLAN
- Tez Türü: Doktora
- Konular: Elektrik ve Elektronik Mühendisliği, Electrical and Electronics Engineering
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2013
- Dil: İngilizce
- Üniversite: Unıversıty Of South Florıda
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: Belirtilmemiş.
Özet
Özet yok.
Özet (Çeviri)
Wireless communications systems underwent an evolution as the voice oriented applications evolved to data and multimedia based services. Furthermore, current wireless technologies, regulations and the understanding of the technology are insufficient for the requirements of future wireless systems. Along with the rapid rise at the number of users, increasing demand for more communications capacity to deploy multimedia applications entail effective utilization of communications resources. Therefore, there is a need for effective spectrum allocation, adaptive and complex modulation, error recovery, channel estimation, diversity and code design techniques to allow high data rates while maintaining desired quality of service, and reconfigurable and flexible air interface technologies for better interference and fading management. However, traditional communications system design is based on allocating fixed amounts of resources to the user and does not consider adaptive spectrum utilization. Technologies which will lead to adaptive, intelligent, and aware wireless communications systems are expected to come up with consistent methodologies to provide solutions for the capacity, interference, and reliability problems of the wireless networks. Spectrum sensing feature of cognitive radio systems are a step forward to better recognize the problems and to achieve efficient spectrum allocation. On the other hand, even though spectrum sensing can constitute a solid base to achieve the reconfigurability and awareness goals of next generation networks, a new perspective is required to benefit from the whole dimensions of the available electro hyperspace. Therefore, spectrum sensing should evolve to a more general and comprehensive awareness providing a mechanism, not only as a part of CR systems which provide channel occupancy information but also as a communication environment awareness component of dynamic spectrum access paradigm which can adapt sensing parameters autonomously to ensure robust identification and parameter estimation for the signals over the monitored spectrum. Such an approach will lead to recognition of communications opportunities in different dimensions of spectrum hyperspace, and provide necessary information about the air interfaces, access techniques and waveforms that are deployed over the monitored spectrum to accomplish adaptive resource management and spectrum access. We define multidimensional signal analysis as a methodology, which not only provides the information that the spectrum hyperspace dimension in interest is occupied or not, but also reveals the underlaying information regarding to the parameters, such as employed channel access methods, duplexing techniques and other parameters related to the air interfaces of the signals accessing to the monitored channels and more. To achieve multidimensional signal analysis, a comprehensive sensing, classification, and a detection approach is required at the initial stage. In this thesis, we propose the multidimensional signal analysis procedures under signal identification algorithms in time, frequency. Moreover, an angle of arrival estimation system for wireless signals, and a spectrum usage modeling and prediction method are proposed as multidimensional signal analysis functionalities.
Benzer Tezler
- Nanoscale wireless optical communication receivers with graphene and carbon nanotube
Grafen ve karbon nanotüp ile nanoölçekli kablosuz optik haberleşme alıcıları
BURHAN GÜLBAHAR
Doktora
İngilizce
2012
Elektrik ve Elektronik MühendisliğiKoç ÜniversitesiElektrik-Elektronik Mühendisliği Ana Bilim Dalı
DOÇ. DR. ÖZGÜR BARIŞ AKAN
- İşbirliğine dayalı ortam erişim kontrol protokolü tasarımı ve analizi
Cooperative medium access control protocol design and analysis
MUHAMMET ALİ KARABULUT
Doktora
Türkçe
2021
Elektrik ve Elektronik MühendisliğiYıldız Teknik ÜniversitesiElektronik ve Haberleşme Mühendisliği Ana Bilim Dalı
DOÇ. DR. HACI İLHAN
- Enerji iletim sistemlerinde açma-kapama olaylarının analizleri için hat parametrelerinin EMTP yardımıyla hesabı
Calculation of line parameters for the analyses of power system switching transient using EMTP
KORAY ŞERBETÇİOĞLU
Yüksek Lisans
Türkçe
1995
Elektrik ve Elektronik Mühendisliğiİstanbul Teknik ÜniversitesiDOÇ.DR. ADNAN KAYPMAZ
- Nonlinear data modeling methods for multidimensional signal analysis
Çok boyutlu i̇şaretlerin analizi için doğrusal olmayan veri modelleme yöntemleri
MEHMET FİDAN
Doktora
İngilizce
2015
Elektrik ve Elektronik MühendisliğiAnadolu ÜniversitesiElektrik-Elektronik Mühendisliği Ana Bilim Dalı
PROF. DR. ÖMER NEZİH GEREK
- Direct and blind deconvolution for multidimensional signals
Çok boyutlu işaretler için doğrudan ve gözü kapalı ters evrişim
MURAT ÜNEY
Yüksek Lisans
İngilizce
2001
Elektrik ve Elektronik MühendisliğiOrta Doğu Teknik ÜniversitesiElektrik ve Elektronik Mühendisliği Ana Bilim Dalı
DOÇ. DR. T. ENGİN TUNCER