[PDF] Top 20 Performance evaluation of spectral amplitude codes for OCDMA PON

... The transmitter section, which represents the central office consists of five components: pulse pattern generator (PPG), non- return-zero (NRZ) pulse generators, single broadband optical source: ASE, FBGs and external ... See full document

... the performance of the proposed code, the numerical results obtained from the implementation of this code are compared with those of two other codes; MDW and RD ... See full document

... encoding, spectral amplitude encoding, spectral phase encoding and spatial encoding ...the OCDMA technology uses the temporal encoding employing a delay line ... See full document

... and spectral response as given in ...separate codes; the chip spacing was ...all spectral chips to obtain an accurate evaluation of the two-channel system ... See full document

... The FSO-CDMA system with multi-wavelength laser source was implemented using Optisystem version 10 software and its schematic diagram is illustrated in Fig. 2. Modified double weight (MDW) code [16] is used to produce ... See full document

... the performance of spectral-amplitude coding optical code-division multiple-access (SAC-OCDMA) systems based on single photo-diode (SPD) detection and spectral direct detection (SDD) ... See full document

... The OCDMA technique enables many subscribers to share the optical network resources simultaneously and asynchronously by allocating a specific code to each ...the OCDMA technique is the simplification of ... See full document

... in spectral- amplitude-coding Optical Code Division Multiple Access (CDMA) systems since these codes eliminate multi access interference and also suppress the effect of phase-induced intensity ... See full document

... using spectral amplitude coding techniques within an optical code division multiple access (OCDMA) ...for performance evaluation of VW-MS ...VW-codes. Performance of VW-MS ... See full document

... (M-sequence) codes, Walsh–Hadamard codes, modified quadratic congruence codes, modified double weight and so ...SAC– OCDMA systems assign one unique spectral amplitude codeword ... See full document

... YNCHRONOUS OCDMA allows many users to share a common optical channel ...incoherent OCDMA was insecure and it could only provide some degree of data ...high-performance OCDMA network requires ... See full document

... In this paper I tried to propose an enhancement to the DS-OCDMA system by reducing the number of expensive interferences cancellation operations given the fact that the most serious limitation of DS OCDMA ... See full document

... and spectral amplitude esti- mation (BDSAE), in which the importance of the speech detection and estimation for speech enhancement are jointly ...and spectral amplitude estimation module are ... See full document

... The Viterbi-Algorithm (VA) is a common application of dynamic programming. Since it contains a nonlinear feedback loop (ACS-feedback, ACS: add-compare-select), this loop is the bottleneck in high data rate ... See full document

... 2-D codes. Further the OCDMA system is designed to check the performance of these 2-D ...The performance of the OCDMA system is evaluated for various data rates ...of OCDMA for ... See full document

... The decoder works in an iterative way. The first decoder will decode the sequence and pass the hard decision together with a reliability estimate of this decision to the next decoder after proper interleaving. The second ... See full document

... 2-D codes to 3-D codes without losing orthogonality, we only need to assign wavelengths to each spatial channel such a way that any two distinct codewords have no more than one spatial channel of the same ... See full document

... system performance improvements, the proof of concept experiments were carried out using a field based fiber optic transmission link having a length of ...multiuser OCDMA terminals, see ...transmitting ... See full document

... In demanding the higher data rates, along with variable QoS and variable bandwidths, the communications technology has led to remarkable advancement. To meet those requirements, whereas the TDMA and WDMA require complex ... See full document

... Weight OCDMA (VW- OCDMA) system using KS code with Direct Decoding (DD), Complementary Subtraction (CS) and AND subtraction de- tections is ...System performance is analyzed us- ing mathematical ... See full document