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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/1450

Title: Optimal Quantum Receiver Performance Analysis For Free Air Channel
Authors: Abdulrezak, Oumer
Advisors: Dr.Ing.Mohammed Abdo
Copyright: Feb-2004
Date Added: 16-Oct-2008
Publisher: Addis Ababa University
Abstract: T h e f u n d ame n t a l p e r f o rma n c e l imi t s o f o p t i c a l c ommu n i c a t i o n s s y s t ems o p e r a t i n g o v e r t h e f r e e - s p a c e c h a n n e l wi l l b e e x ami n e d u s i n g q u a n t um d e t e c t i o n p r i n c i p l e . T h e p e r f o rma n c e o f t h e o p t imum q u a n t um r e c e i v e r f o r On /O F F k e y i n g a n d B i n a r y P h a s e - s h i f t k e y i n g Op t i c a l mo d u l a t i o n f o rma t i n t e rms o f q u a n t um me a s u r eme n t s t a t e s wh o s e p e r f o rma n c e i s o p t imi z e d v i a g e n e r a l i z e d r o t a t i o n i n H i l b e r t s p a c e i s f i r s t e x ami n e d a s a p u r e - s t a t e ( n o - n o i s e ) p r o b l em. T h e p e r f o rma n c e o f q u a n t um receiver f o r M- a r r a y p u l s e - p o s i t i o n mo d u l a t i o n ( P PM) , wh i c h r e q u i r e s a p r o d u c t s t a t e r e p r e s e n t a t i o n , a n d (M- 1 ) d ime n s i o n a l r o t a t i o n a l A l g o r i t hm wi l l b e e v a l u a t e d wi t h t h e d e v e l o pme n t o f a n e f f i c i e n t r o t a t i o n a l a l g o r i t hm a n d a c omp u t e r p r o g r amme f o r c a r r y i n g o u t t h e r e q u i r e d n ume r i c a l o p t imi z a t i o n i s d e s c r i b e d a n d a p p l i e d . P e r f o rma n c e c omp a r i s o n s s h ows s u b s t a n t i a l imp r o v eme n t wh e n q u a n t um d e t e c t i o n p r i n c i p l e i s emp l o y e d . A s a f u r t h e r a p p l i c a t i o n o f t h e q u a n t um d e t e c t i o n p r i n c i p l e , t h e R e a l i z a t i o n o f q u a n t um d e t e c t i o n O p a r a t o r F o r M- a r r a y P h a s e s h i f t o p t i c a l mo d u l a t i o n f o rma t i s a l s o p r e s e n t e d .
Description: A thesis submitted to the School of Graduate Studies of Addis Ababa University in partial fulfilment of the requirements for the Degree of Masters of Science in Communication Engineering
URI: http://hdl.handle.net/123456789/1450
Appears in:Thesis - Computer Engineering

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