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Optical signal reinstatement (OSR) is a common technique used in high-speed communication systems. OSR can be achieved using various techniques such as; semiconductor optical amplifiers, optical parametric amplifiers, optical loop mirror, and etc. The existing OSR techniques of a maximum speed of 40 Gb/s for long haul communication of 300 km transmission distance offer the 10−10 BER of and noise (phase...
High performance communication systems require high performance devices for exchanging information at a faster rate. These devices are experiencing several challenges e.g. bandwidth limitations, power limitations, design limitations and etc. The existing techniques are lacking in providing high performance output simultaneously by maintaining actual parameters of device. In this work, high performance...
In this paper, a new all-optical signal regeneration technique is designed by integrating the degenerated Four Wave Mixing (FWM) and designed optical locked signal mechanism. The developed technique is tested over three noisy 15Gb/s DPSK test signals via simulation. These signals are configured with different wavelengths and inclusion of different level of phase noises. The noisy DPSK test signals...
We have programmed and simulated the 3D/4D-CAP signals with 468.75 Megabit per second (Mbps) and 416.67 Mbps over 3 km of single mode fiber (SMF) with 1310 nm single mode vertical cavity surface emitting laser (SM-VCSEL). A 1.5 dB difference have been observed between the 3D-CAP and 4D-CAP. The 3.57 b/s/Hz and 3.13 b/s/Hz of spectral efficiency are reported for 3D-CAP and 4D-CAP with receiver sensitivity...
In electronic devices when operating frequency is exceeded from its resonant frequency the power of the device increases drastically. Due to this, device reaches in dead zone and will not function anymore. In this work, power optimization is performed for Pseudo Noise sequence based optical transmitter. The PN generator for optical transmitter is designed using linear shift registered generator method...
Corners detection and sensitive parts features extractions methods are gaining more interests in quality control for automated industrial sensitive products manufacturing. As 2D edge defections detections algorithms have their own limitation as they are not supportive and accurate, 3D can improve significantly the accuracy of detecting the product defects. This paper, proof the concept of the accuracy...
In today's advanced communication, electronic and electrical technology, the used of Electromagnetic Interference (EMI) filter has almost become mandatory. Therefore it requires careful and high attention on the impact of this EMI filter installation. This paper discussed and explained the application of Earthing Current Signature Analysis (ECSA) as new developing technique in determining the earth...
We reported an optimization method to improve Multi Slot Amplitude Coding (MSAC) optical fiber system performance. Simulation result clearly shows that optimum back to back BER performance is achieved when signal level spacing for upper level is higher than that of the lower level in order to compensate the signal dependent noise. In addition, we compare optimized system performance in terms of optical...
Carrier aggregation (CA) is one of the most important technologies to ensure the success of 4G technologies. This paper presents new Long Term Evolution-Advanced (LTE-Advanced) depending on CA technology; the new system has better performance than LTE. The system supports wider bandwidth up to 120 MHz and provides higher level of throughput. Aggregated LTE-Advanced is designed with 2×2 Multiple Input...
Due to the rapid development in technology, researchers are looking towards high speed wireless technologies which are suitable for high quality multimedia services. One of the most attractive and effective technologies which is used in fourth generation is Multi Carrier Code Division Multiple Access (MC-CDMA); this technology has many advantages such as robustness against frequency selective fading...
The crucial design issues for future wireless transceivers are the challenging and contradictory requirements of high performance, low power, and flexibility. The application requirements for wireless systems are quite diverse in terms of changing data rates and bit error rates along with changing bandwidths and other channel parameters like the delay spread. This paper discusses the effects of FFT...
Long Term Evolution-Advanced (LTE-A) is becoming the first choice of operators when constructing the new network infrastructure, because of its high throughput and low latency. Although the L TE-A can offer high speed data service as a benefit of wideband application, the large bandwidth also results in huge control signaling cost. Additionally the L TE bands may not be large enough in many countries...
Multicarrier code division multiple access (MC-CDMA) is favorable technique for future mobile network technology services. However, the high peak to average power ratio (PAPR) problem is one of the most important disadvantages of it. This research paper presents a Novel MC-CDMA system with fewer PAPR and converged performance from the original MC-CDMA. This paper includes all the required results...
The aim of Long Term Evolution-Advanced (LTE-A) is to support a maximum throughput exceed 1 Gbps to the increase in data usage due to smart phones and bandwidth up to 100 MHz to an exponential growth in video downloads. LTE-A downlink physical layer allows a mobile to transmit and receive on up to four component carriers (CCs) in non-contiguous CCs case, each of which has a maximum bandwidth of 20...
According to the fact that Multi-carrier code division multiple access (MC-CDMA) systems receive a great attention due to their achieving high data rates in wireless telecommunications, the researchers try to improve the performance of these systems. This paper presents a novel MC-CDMA which has low peak to average power ratio (PAPR). The system is designed by combining MC-CDMA with the Single carrier-frequency...
This paper reports a novel method on the probability of symbol error estimation for high speed Multi Slot Amplitude Coding (MSAC) technique in optically amplified communication system. The system setup is based on simple intensity modulation and direct detection scheme which is cost effective. In this proposed method, possibility of symbol error is estimated based on individual probability density...
An experimental setup of back-to-back 10kbps data transmission based on MSAC technique over fiber optic link with intensity modulation and direct detection (IM/DD) scheme is demonstrated for the first time. The signal waveform and signal spectrum from MSAC generator is observed. Signal spectrum observation shows that the first transition clock is at 3.33kHz. For optical MSAC signal transmission, the...
A new multi-slot and multi-level coding technique, which is a combination of multiplexing and coding technique, known as Multi Slot Amplitude Coding (MSAC) is presented. This technique offers better flexibility in terms of defining the symbol based on time slot and signal level in order to generate more unique symbols as a line code with better clock information since all the symbols have zero level...
A new multi-slot and multi-level coding technique for high capacity communication system, known as Multi Slot Amplitude Coding (MSAC) is presented. This technique offers better flexibility in terms of defining the symbol based on time slot and signal level in order to generate more unique symbols as a line code with better clock information since all the symbols have zero level (return-to-zero) at...
The results obtained from the work demonstrate that the introduction of variable slots in the patches of the reflectarray offers a number of significant advantages which include miniaturization of antenna and less chances of mutual coupling between adjacent elements. It has also been shown that an enhanced bandwidth is achieved in terms of slope around the resonance frequency which decreases from...
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