Ortadoğu alt sisteminde İran dış politikası

06.03.2018 tarihli ve 30352 sayılı Resmi Gazetede yayımlanan “Yükseköğretim Kanunu İle Bazı Kanun Ve Kanun Hükmünde Kararnamelerde Değişiklik Yapılması Hakkında Kanun” ile 18.06.2018 tarihli “Lisansüstü Tezlerin Elektronik Ortamda Toplanması, Düzenlenmesi ve Erişime Açılmasına İlişkin Yönerge” gereğince tam metin erişime açılmıştır.Araştırmanın amacı dünya siyasi tarihinde önemli bir dönemin sonu olarak kabul edilen Soğuk savaş'ın bitiminden günümüze Ortadoğu alt sisteminde İran dış politikasını inceleyerek bölgesel ve küresel anlamda ortaya çıkardığı etkilerini incelemektir. Çalışmada; Ortadoğu'da siyasi toplumsal ve ekonomik anlamda güçlü bir devlet olan İran'nın Soğuk savaş sonrası Uluslararası sistemdeki bölgesel, küresel ve konjektürel değişimlere karşı dış politik yönelimleri incelenecektir.İslam dünyasında farklı bir yaklaşımla Sünni ülkelerden ayrılan ve Şiiliğin 1979 devrimi ile siyasi anlamda temsil edildiği tek ülke olarak diğer İslam ülkelerinden ayrılan İran, sahip olduğu önemli petrol ve doğalgaz zenginliğiyle bölgenin en önemli enerji kaynağı ülkelerinden biri konumundadır. Sahip olduğu jeostratejik konum itibariyle hem soğuk savaş döneminde hem de soğuk savaş sonrası dönemde küresel güçlerin etki altında tutmak istedikleri bir ülke olmuştur. İran, özellikle şu son dönemde Nükleer Silah edinme konusundaki çalışmaları nedeniyle dünyanın gündemindeki yerini tutmaya devam etmektedir.Bu bağlamda araştırmada; bugün bölgesel bir alt sistem olarak Ortadoğu alt sistemindeki yapı nedir? Bu yapı İran dış politikasını nasıl şekillendirmektedir? İran dış politikasının belirlenmesinde İran siyasi yapısı, jeopolitiği, ekonomik yapısı ne kadar etkilidir? İran'ın soğuk savaş sonrası küresel güçlerle ve bölge ülkeleri ile ilişkileri ne seviyededir? Sorularına cevap bulunmaya çalışılmıştır.Araştırmanın sonucunda İran, Ortadoğu'da özellikle İsrail, ABD ve Türkiye gibi ülkelere karşı bir güç dengesi politikası geliştirdiği, nükleer güç sahibi İsrail ve ABD'ye karşı nükleer güç elde ederek hem bölgede etkin bir aktör olmak hem de İsrail ve ABD'ye karşı caydırıcı bir güç olabilmeye çalıştığı söylenebilir. İran dış politikasının belirlenmesinde İran siyasi yapısı, İran jeopolitiği, ekonomik gücü son derece etkili olduğu ve İran halkının 30 yıldır devam eden ideolojik rejime karşı memnun olmadığı; fakat kendisini düşman olarak gören batılı ülkelere karşı rejimi temsil edenlere destek olmayı tercih ettikleri sonuçlarına ulaşılmıştır.The aim of the study is to examine Iran's foreign policy in the Middle East sub-system and its effects revealed in the regional and global scale starting from the end of the Cold War up to now as being accepted an important period in world political history .On this study; post- cold war Iran as a politically, socially, and economically powerful country in the middleast , Iran?s foreign political tendencies against regional, global, and conjunctural changes and trends will be examined.Iran ,as differentiated from the sunni countries with a different approach in İslamic world and differentiated from the other Islamic countries by means of the 1979 shia revolution as the only country represented that way in the political sense, is one of the most important energy resource providing countries in the region by having the richness of petroleum and natural gas .Because of its geo-strategic location during and after the period of the cold war and the post-cold war it has been a country that was desired to be kept under the influence of global forces. Iran especially nowadays, following its recent studies about how to obtain Nuclear Weapons world continues to keep its place on the agenda.To that extent in this research, today as a regional sub-system what is the structure of the Middle East sub-system? How does this structure shape Iran's foreign policy?Determining Iran's foreign policy how effective are the political structure of Iran, geopolitics, and the economic structure,?At what level Iran's post-cold war relations are with global powers and regional states? These questions above were tried to be answered?As a result of this study it can be said that, Iran in the middleast has been developing a balance of power policy particularly against Israil, USA and Turkey, and trying to be an effective power in the region by means of obtaining nuclear power at the same time trying to be a deterrent power against Israil and USA.Results that were reached ;In determining Iran's foreign policy, Iran?s political structure , geopolitics, economic power are highly effective and for 30 years the Iranian people are not satisfied with the ongoing ideological regime, but against the western countries who see them as their enemies Iranian people prefer to support those who represent the regime

Physical layer security for multi-user MIMO visible light communication systems with generalized space shift keying

We consider the physical layer security (PLS) of multi-user (MU) multiple-input-multiple-output visible light communication (VLC) systems with an eavesdropper (Eve) and propose a novel spatial constellation design technique based on generalized space shift keying (MU-GSSK-SCD). The received signals of the legitimate users are optimized jointly, such that their bit error ratios (BERs) are minimized and Eve's BER is significantly degraded. The emission power of randomly selected light-emitting diodes is adjusted, by exploiting users' channel state information at the transmitter. Our strategy ensures that legitimate users receive confidential messages fully in an undistorted fashion, while any meaningful leakage to Eve is strongly prohibited, without any artificial noise addition. Every user can decode only its information, hence inter-user security is also guaranteed. The PLS improvements are presented in terms of both BERs and achievable secrecy rates in practical VLC scenarios. For various user configurations, it is shown that MU-GSSK-SCD increases the BER at Eve to the 0.5 level, while providing minimized BERs to the legitimate users. The achievable secrecy rate region is derived for MU-GSSK-SCD and it is shown that full secrecy can be achieved at 0 dB signal-to-noise ratio (SNR) level with a user separation as small as 90 cm

Generalized Spatial Modulation over Correlated Fading Channels: Performance Analysis and Optimization

ISBN: 978-1-4673-6425-6International audienceWe present a general upper bounding framework for the average bit error probability (ABEP) of generalized spatial modulation (G-SM) over correlated Rayleigh and Rician channels. Our approach is applicable to any multiple-input multiple-output (MIMO) configuration and linear modulation alphabet. The framework also incorporates possibly correlated Gaussian channel estimates. The ABEP with perfect channel state information (CSI) can be derived as a special case. This approach not only provides tight ABEP upper bounds but also serves as a performance optimization tool to choose the best transmit antenna group configuration. All theoretical results are validated by simulation results shown using phase shift keying (PSK) and quadrature amplitude modulation (QAM) constellations

Performance Analysis of Spatial Modulation over Correlated Fading Channels

International audienceWe present a general upper bounding framework for the average bit error probability of spatial modulation over correlated Rayleigh and Rician channels. The proposed approach provides a closed form upper bound for correlated Rayleigh fading conditions whereas for correlated Rician channels it leads to the numerical evaluation of a single integral formula. The framework is applicable to a general class of linear modulation alphabets and any number of transmit/receive antennas. Theoretical derivations are validated via simulation results

Bit-Interleaved Coded Spatial Modulation

International audienceWe address coded spatial modulation (CSM) and present a novel approach denoted as bit-interleaved coded spatial modulation (BICSM) with iterative demodulation/decoding. The proposed transceiver architecture alleviates some drawbacks of the previously proposed CSM systems, such as being limited to a particular class of trellis codes or being effective only in limited channel scenarios. We specifically address the performance of BICSM over correlated Rayleigh and Rician fading channels and provide a general framework for the error performance analysis. Simulation results illustrate that BICSM provides not only significant performance improvements against channel fading in comparison to other CSM approaches but also higher robustness against antenna correlation effects

Performance of Spatial Modulation over Correlated Fading Channels with Channel Estimation Errors

International audienceWe present a general framework for the analysis of the effects of channel estimation errors on the average bit error probability (ABEP) of spatial modulation over correlated Rayleigh and Rician channels. The proposed approach is useful in obtaining the upper bound on the ABEP exactly for M-ary PSK constellations and with a very close approximation for M-ary QAM constellations. The framework is applicable to any number of transmit/receive antennas and to other linear constellations as well. Theoretical derivations are validated via simulation results