TAILIEUCHUNG - Báo cáo hóa học: "Second-order statistics of selection macrodiversity system operating over Gamma shadowed -μ fading channels"

Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học đề tài : Second-order statistics of selection macrodiversity system operating over Gamma shadowed -μ fading channels | Panic et al. EURASIP Journal on Wireless Communications and Networking 2011 2011 151 EURASIP Journal on . http content 2011 1 151 Wireless Communications and Networking a SpringerOpen Journal RESEARCH Open Access Second-order statistics of selection macrodiversity system operating over Gamma shadowed K-ụ fading channels C-t-Q-f-jf l D D-if li Di IC2n l l TỳoìAmr x iA2 l 3ri3 l l Doirr A iA3 Q f O F2r ir i i 4 A Ar iTicl Ticr ix 4 fiiH Stefdl R Pdlic Dusdl M DteidllUvIC Ivdld M Peuovic Milldjlo Steidliuvic Jelei Id A Al Idsidsov dld Dragana S Krstic4 Abstract Il this drticle infinite-series expression for the secold-order stdtisticdl medsures of d mdcro-diversity structure operdtilg over the Gdmmd shddowed K-ụ fddllg chdllels dre provided. We hdve focused ol MRC mdximdl rdtio combililg combililg dt edch bdse stdtiol micro-diversity dld selectiol combililg SC bdsed ol output sigldl power vdlues betweel bdse stdtiols mdcro-diversity . Some lumericdl results of the system s level crossilg rdte dld dverdge fddilg durdtiol dre preselted il order to exdmile the ilfluelce of vdrious pdrdmeters such ds shddowilg dld fddilg severity dld lumber of the diversity brdlches dt the micro-combilers ol colcerled qudltities. 1 Introduction Wireless channels are simultaneously affected by shortterm fading and long-term fading shadowing 1 . Shadowing is the result of the topographical elements and other structures in the transmission path such as trees tall buildings etc. Short-term fading multipath is a propagation phenomenon caused by atmospheric ducting ionospheric reflection and refraction and reflection from water bodies and terrestrial objects such as mountains and buildings. By considering important phenomena inherent to radio propagation K- short-term fading model was recently proposed in 2 as a model which describes the short-term signal variation in the presence of line-of-sight LoS components and includes Rayleigh Rician and Nakagami-m fading models

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