optical CDMA
Performance Analysis of Two Dimensional Wavelength/ Time Encoding System for Optical CDMA Networks
... Optical CDMA systems can be divided into two broad categories based on the way in which a particular user’s code is applied to the optical ...the optical signal field, which is often derived ...
5
2 50 Gbps Optical CDMA Transmission System
... in optical fiber networks has attracted considerable attention since 1985 ...distance optical networks, the information consists of a multiplexed aggregate data stream originating from many individual ...
5
Comparison of detection techniques in optical cdma access network for point to multipoint configuration
... In optical systems, rectangular filters are used as the encoder/decoder in front of LED in order to narrow down the linewidth before transmission ...existing Optical CDMA coding scheme are using an ...
5
Analysis of Optical CDMA Signal Transmission: Capacity Limits and Simulation Results
... Optical CDMA can provide multiple attractive features for data access networks with bursty traffic, that is, flexibil- ity of asynchronous and decentralized network operation, potential of high data ...
14
Design and Analysis of Optical CDMA System Based on Application of Code Shifting Technique to 2-D Optical Orthogonal Codes
... for optical CDMA(OCDMA) are important due to the large code set size(cardinality) of such codes and their good spectral efficiency, when compared to one-dimensional (1-D) ...asynchronous optical ...
8
High performance mixed optical CDMA system using ZCC code and multiband OFDM
... mixed optical Code Division Multiple Access (CDMA) system using Zero Cross Correlation (ZCC) code and multiband Orthogonal Frequency Division Multiplexing (OFDM) called catenated ...traditional ...
5
Improving multi access interference suppression in optical CDMA by using all-optical signal processing
... Abstract — This paper presents the study of a novel all- optical method for processing optical CDMA signals towards improving suppression of multi access interference. The main focus is on incoherent ...
6
Algorithms for Interference Sensing in Optical. CDMA Networks
... Previous optical CDMA network designs used Aloha-CDMA ...of optical CDMA under heavy loads can be improved by simple media access mechanisms that prevent interfering codewords from ...
18
Emerging Optical CDMA Techniques and Applications
... ultrashort optical pulse onto the SSFBG will generate a series of coherent short optical pulses whose phases are determined by the pattern of the phase shifts in the ...
18
Maximization of Spreading Code Cardinality Using Transpose Function in Synchronous Optical CDMA
... common optical channel simultaneously. It has numerous potentials in the optical networking such as all-optical processing, multiple-transmissions on a single-wavelength and simple new user ...
6
Reduction of Four Wave Mixing Effect in Hybrid Optical CDMA/WDMA System-A Simulation Study
... The conventional FFH-CDMA system requires the frequency synthesizer to select a frequency according to the output from the pseudo-random code generator at the transmitter part. At the same time, the ...
9
Study of Wireless Optical CDMA LAN in Indoor Environment
... Wireless CDMA has emerged before 16 years. The CDMA systems are all about encoding the information signal with the pseudo ...of CDMA systems is that same channel can be used for transmitting many ...
8
Hiding Stealth Optical CDMA Signals in Public BPSK Channels for Optical Wireless Communication
... in the public channel when the average source power of the stealth signal, public noise, and public 26.. signal are −5, −3, and 0 dBm, respectively.[r] ...
17
Multiuser Delay Tracking CDMA Receiver
... [8] J. Caffery Jr. and G. L. St¨uber, “Nonlinear multiuser pa- rameter estimation and tracking in CDMA systems,” IEEE Trans. Communications, vol. 48, no. 12, pp. 2053–2063, 2000. [9] R. A. Iltis, “A DS-CDMA ...
10
On the Uplink Performance of Asynchronous LAS CDMA
... LA codes [2, 3] belong to a family of ternary codes having el- ements of ±1 or 0. Their maximum correlation magnitude is unity and they also exhibit an IFW. Let us denote the fam- ily of the K number of orthogonal ...
5
CDMA SIGNALING TECHNIQUE USING MATLAB
... The short term multipath fading can severely reduce transmission accuracy. Diversity is an effective way to combat channel fading. Diversity improves transmission performance by making use of more than one independently ...
8
The Alamouti Scheme with CDMA-OFDM/OQAM
... combining CDMA and OFDM/OQAM can satisfy the complex orthogonality ...a CDMA component can thus be seen as a solution to apply the Alamouti scheme in combination with ...the CDMA-OFDM/OQAM ...
13
An Improved Overloading Scheme for Downlink CDMA
... In this paper, we extended the idea of perfectly aligned over- saturated O/O systems to O/O systems where the set 1 and set 2 user signals are displaced in time. We found that such a displacement reduces the multiuser ...
7
Multichannel Baseband Processor for Wideband CDMA
... A second type of dimensioning analysis is based on a statisti- cal analysis of the CDMA system and the propagation chan- nel. In this architecture, the receiver supports the entire cell capacity. The receiver ...
16
Performance of CDMA power control for HAPS
... There are several important factors that makes our current mobile communication system work properly. Major research areas include coding and optimizing power control schemes. The issue of power control is very important ...
42