Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userA study of the effect of detection techniques in SAC-OCDMA system on the signal quality factor using the Optisystem
دراسة تأثير تقنيات الكشف في نظام SAC-OCDMA على عامل جودة الإشارة باستخدام الـ OPTISYSTEM
1476
1 63
0
(
0
)
Created by
Shamra Editor
Ask ChatGPT about the research
يتضمن هذا البحث نمذجة و محاكاة لمرسل و مستقبل نظام العبور المتعدد بتقسيم الكود OCDMA (Optical Code Division Multiple Access) ذو ترميز المطال الطيفي SAC (Spectral Amplitude Coding) حيث تمت دراسة تأثير نوع مولد النبضات المستخدم في مرسل SAC-OCDMA ذي تقنية الكشف المباشر و تأثير طول الليف البصري على عامل جودة الإشارة Q و على نسبة خطأ البت BER، كما تم إجراء مقارنة بين نظام SAC-OCDMA ذو تقنية الكشف المباشر و آخر ذو تقنية الطرح التكميلي من حيث عامل جودة الإشارة Q و نسبة خطأ البت BER عند استخدام نفس البارامترات للنظامين.
This research includes a simulation of optical code division multiple access system transceiver (OCDMA) of the spectral amplitude coding (SAC). The study investigates the effect of the pulse generator type used in the transmitter SAC-OCDMA of direct detection technique and the effect of the length of the optical fiber on the signal quality factor (Q) and on the bit error ratio( BER) . In addition a comparison is made between the SACOCDMA system of direct detection technique and another one of complementary subtraction technique in terms of signal quality factor and the bit error ratio when using the same parameters for both systems.
References used
VITERBI,A.J. CDMA: Principles of Spread Spectrum Communication. Addisonwesley, 1995
NATH,V; JAIN,N; DOGRA, S. EFFECT OF FIBER DISTANCE ON VARIOUS SAC-OCDMA DETECTION TECHNIQUES. IJRET, Mar-2013
WEI,Z; SHALABY,H; GHAFAURI-SHIRAZ, H. Modified quadratic congruence codes for fiber Fiber-Bragg-Grating-based spectral amplitude- coding optical CDMA systems. Journal of Lightwave Technology, 2001
rate research
Read More
This study has been conducted to adapt a quantitative RT-QPCR to
detect the least amount of virus and tissue culture pathogenic dose
(TCID50) of CAEV showed cytopathogenic effect (CPE) from
clinical samples.
the importance of research to define the importance of the
restoration to preserve the identity of the country and its heritage and
authenticity as well as for the restoration of some of the buildings came
to show contemporary form processions of
progress and development
that we are witnessing in addition to the development of systems and
controls set standards and methods of restoration, protection and
maintenance in order to direct the business in the right direction and
organize repairs to stop the dangers arising wrong to intervene and
factors demise and the demise of heritage buildings, which are often
caused by personal interpretations resulting from the absence of
references and standards pertaining to restoration and especially in our
country, in addition to the non-observance of international standards for
restoration.
The aim of this study, the development of systems and controls set
standards and methods of restoration and protection and maintenance
to operate this business in the right direction and straighten restoration
goals in the right direction away from reconstructive mistakes that we
are experiencing as a result of the absence of references and standards
reconstructive and especially in our country.
Optical fiber is one of the most important communications media in communication
system. Due to its versatile advantages and negligible transmission loss it is used in high
speed data transmission. There are various types of optical fiber, the Fibe
r Bragg Grating
(FBG) is commonly chosen as important components to compensate the dispersion in
optical communication system. Because the low cost of filter for wavelength selection and
low insertion loss, it has also customized reflection spectrum and wide bandwidth. The
simulation of transmission system will be analyzed based on different parameters using
OptiSystem simulator. By simulating a model of communication system and using the
most suitable settings of the system which include input power, fiber cable length (km) and
attenuation coefficient (dB/km) at cable section, there are three different parameters will be
investigated, which are Signal power, Noise power, output power at receiver.
The effect of presence of gelatin, pectin and starch with 0.5% and
carrageenan 0.2% in the yogurt had been studied. Many tests techniques
as viscosity, penetration for yogurt gel, whey separation and sensory
evaluation had been established and com
pared.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
