Log in

Relevant bibliographies by topics / Optical CDMA correlation receiver / Journal articles

To see the other types of publications on this topic, follow the link: Optical CDMA correlation receiver.

Journal articles on the topic 'Optical CDMA correlation receiver'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Optical CDMA correlation receiver.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Kada, Biteur, and Benadda Lotfi. "Analysis of bit error rate for conventional receivers in DS-OCDMA utilizing extended prime codes." STUDIES IN ENGINEERING AND EXACT SCIENCES 5, no. 2 (2024): e9981. http://dx.doi.org/10.54021/seesv5n2-420.

Full text

Abstract:

DS-OCDMA is a multiple access technique that enables simultaneous transmission of data from multiple users over a common optical channel. It leverages the principles of code division multiple access (CDMA) to allow for efficient utilization of bandwidth while maintaining minimal interference between users. The DS-OCDMA system employs unique optical codes for each user, enabling data to be spread across a wider bandwidth. The codes are typically designed to have specific properties, such as low cross-correlation, to minimize interference. Extended Prime Codes (EPC) (Huang, C., & Tseng, P.,

APA, Harvard, Vancouver, ISO, and other styles

2

Kedia, Deepak, and Ankita Rani. "Performance Evaluation of Correlation Properties of Quasi Orthogonal Prime Codes for Optical CDMA Communication." Journal of Optical Communications 41, no. 2 (2020): 195–207. http://dx.doi.org/10.1515/joc-2017-0172.

Full text

Abstract:

AbstractOptical code division multiple access (OCDMA) is one of the promising technologies to be implemented using all-optical networks. The performance of OCDMA system is largely dependent on the particular codes used for encoding. A proper choice of code family as well as code dimension is of prime importance due to various transmitter and receiver design considerations. This paper mainly aims at evaluation of desirable characteristics of various spreading codes based on the prime sequences. An extensive effort has been done in this paper to evaluate the correlation characteristics of variou

APA, Harvard, Vancouver, ISO, and other styles

3

Yadav, Rajesh Yadav, and Gurjit Kaur Kaur. "Two Dimensional Tunable Optical-CDMA System." Indonesian Journal of Electrical Engineering and Computer Science 4, no. 1 (2016): 125. http://dx.doi.org/10.11591/ijeecs.v4.i1.pp125-132.

Full text

Abstract:

<p>In this work an experimental demonstration is proposed to implement the synchronous optical code division multiple access system using two dimensional wavelength hopping and time spreading optical prime code is presented. An optical CDMA system is configured on latest version of optisystem by optiwave for the 20 users (Prime Number = 5) connected in a network operating at a bit rate 10 Gbps each. Tunability is achieved by using a MATLAB based delay selector which serves as the source of control signal for optical delay lines. The encoded optical signal of each user has been assigned a

APA, Harvard, Vancouver, ISO, and other styles

4

Yen, Chih-Ta, Jen-Fa Huang, and Wen-Zong Zhang. "Hiding Stealth Optical CDMA Signals in Public BPSK Channels for Optical Wireless Communication." Applied Sciences 8, no. 10 (2018): 1731. http://dx.doi.org/10.3390/app8101731.

Full text

Abstract:

A new optical steganography scheme is proposed that transmits a stealth optical code-division multiple-access (OCDMA) signal through a public binary phase-shift keying (BPSK) channel. Polarization beam splitters and arrayed waveguide gratings are used to implement a spectral-polarization coding (SPC) system with an incoherent optical source. We employ a Walsh–Hadamard code as the signature code of the user who wants to transmit stealth information using the system. A free space optical link applied to this system maintains the polarization states of light during propagation. The secret data ar

APA, Harvard, Vancouver, ISO, and other styles

5

Fujii, Teruya, and Takayuki Suzuki. "RAKE received characteristics considering antenna diversity and path diversity for wideband DS‐CDMA system." Electronics and Communications in Japan (Part I: Communications) 84, no. 10 (2001): 36–54. http://dx.doi.org/10.1002/ecja.1046.

Full text

Abstract:

AbstractWideband DS‐CDMA must have path diversity reception (RAKE reception) because the received waves are separated into multiple paths as the spread bandwidth widens. Analysis of the reception characteristics which takes into account the actual path characteristics is essential to produce an optimal design for RAKE reception. In this paper, we illustrate the received level characteristics when the number of correlators is limited and the received levels are combined by a RAKE receiver based on a specific path selection scheme in a practical antenna diversity reception model having received

APA, Harvard, Vancouver, ISO, and other styles

6

Rahmani, Mohamed, Abdelhamid Cherifi, Abdullah S. Karar, Ghoutia Naima Sabri, and Boubakar S. Bouazza. "Contribution of New Three-Dimensional Code Based on the VWZCC Code Extension in Eliminating Multiple Access Interference in Optical CDMA Networks." Photonics 9, no. 5 (2022): 310. http://dx.doi.org/10.3390/photonics9050310.

Full text

Abstract:

In order to solve the problem of one-dimensional code length, two-dimensional code spatial length, phase induced intensity noise PIIN effect, improved system capacity, and increased the number of simultaneous users, a new three-dimensional spectral/time/spatial variable weight zero cross correlation code for non-coherent spectral amplitude coding-optical code division multiple access (3D-VWZCC-SAC-OCDMA) is proposed in this paper. Its construction is based on a one-dimensional (1D) spectral sequence and two-dimensional (2D) temporal/spatial sequences, which are characterized by the property of

APA, Harvard, Vancouver, ISO, and other styles

7

Yen, Chih Ta, and Wen Bin Chen. "A Study of Bipolar Walsh-Hadamard Coding Method in Optical CDMA Networks." Applied Mechanics and Materials 284-287 (January 2013): 2667–71. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.2667.

Full text

Abstract:

This study analyzes and calculates unipolar and bipolar coded configurations of spectral-amplitude-coding optical division multiple access (SAC-OCDMA) systems by using analytic and simulated methods. The important feature of the SAC-OCDMA systems is that multiple access interference (MAI) can be eliminated by code sequences of a fixed in-phase cross-correlation value. This property can be effectively canceled by multiple access interference by using balance detection schemes. This study uses Walsh-Hadamard codes as signature codes for the unipolar and bipolar schemes. The coder and decoder str

APA, Harvard, Vancouver, ISO, and other styles

8

Kanwal, Firdos, Khurram Karim Qureshi, Waqas A. Imtiaz, Anwar Ul Haq, and Jawad Mirza. "A Secure Optical Body Area Network Based on Free Space Optics and Time-Delayed 2D-Spectral/Spatial Optical CDMA." Applied Sciences 13, no. 16 (2023): 9347. http://dx.doi.org/10.3390/app13169347.

Full text

Abstract:

Free space optics (FSO)-based optical body area networks (OBANs) are receiving massive attention as an opportunity to address the limitations of their radio frequency (RF)-based counterparts. This boom in research interests is primarily due to multitude of benefits, including high capacity, immunity to electromagnetic interference (EMI), rapid installation, cost efficiency, and license-free use of spectrum. Securing the transmission of patient health data against interception in OBANs using insecure FSO channels is a challenging task. Therefore, we propose a low-cost, flexible, and secure OBAN

APA, Harvard, Vancouver, ISO, and other styles

9

Villadangos, José Manuel, Jesús Ureña, Juan Jesús García-Domínguez, Ana Jiménez-Martín, Álvaro Hernández, and Mª Carmen Pérez-Rubio. "Dynamic Adjustment of Weighted GCC-PHAT for Position Estimation in an Ultrasonic Local Positioning System." Sensors 21, no. 21 (2021): 7051. http://dx.doi.org/10.3390/s21217051.

Full text

Abstract:

Ultrasonic local positioning systems (ULPS) have been brought to the attention of researchers as one of the possibilities that can be used for indoor localization. Acoustic systems combine a suitable trade-off between precision, ease of development, and cost. This work proposes a method for measuring the time of arrival of encoded emissions from a set of ultrasonic beacons, which are used to implement an accurate ULPS. This method uses the generalized cross-correlation technique with PHAT filter and weighting factor β (GCC-PHAT-β). To improve the performance of the GCC-PHAT-β in encoded emissi

APA, Harvard, Vancouver, ISO, and other styles

10

Cheng, Hao, Na Yu, and Jun Liu. "Improved Natural Gradient Algorithms for Multi-Channel Signal Separation." Applied Mechanics and Materials 651-653 (September 2014): 2326–30. http://dx.doi.org/10.4028/www.scientific.net/amm.651-653.2326.

Full text

Abstract:

In this paper, an Multi-channel blind separation of Direct Sequence Code Division Multiple Access (DS-CDMA) has been introduced. Most of which we assume statistically stationary sources as well as instantaneous mixtures of signals using blind source separation (BSS) algorithms. In practicality, the CDMA sources received are convolute mixing. A more complex blind separation algorithm is required to achieve better source separation. Based on the minimizing the average squared cross-output-channel-correlation, the proposed scheme obtains the better source separation. Simulation results show that

APA, Harvard, Vancouver, ISO, and other styles

11

Wakafuji, K., and T. Ohtsuki. "Direct-detection optical cdma receiver with interference estimation and double optical hardlimiters." Journal of Lightwave Technology 21, no. 10 (2003): 2182–88. http://dx.doi.org/10.1109/jlt.2003.816857.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Tuzlukov, Vyacheslav. "Employment of Generalized Receiver for Group-Blind Intersymbol Detection in Downlink CDMA over Fading Multipath Channels." WSEAS TRANSACTIONS ON SYSTEMS AND CONTROL 16 (November 3, 2021): 541–59. http://dx.doi.org/10.37394/23203.2021.16.51.

Full text

Abstract:

Group-blind multiuser detectors for uplink code-division multiple-access (CDMA) were developed by Wang and Host-Madsen. These detectors make use of the spreading sequences of known users to construct a group constraint to suppress the intracell interference. However, such techniques demand the estimation of the multipath channels and the delays of the known users. In the present paper, the blind generalized receiver is de-veloped for CDMA in fading multipath channels. The proposed generalized receiver utilizes the correlation in-formation between consecutively received signals to generate the

APA, Harvard, Vancouver, ISO, and other styles

13

Cotae, Paul, and Matt Aguirre. "Method for Minimizing Total Generalized Squared Correlation of Synchronous DS-CDMA Signature Sequence Sets in Multipath Channels." Journal of Communications Software and Systems 2, no. 1 (2017): 20. http://dx.doi.org/10.24138/jcomss.v2i1.302.

Full text

Abstract:

We characterize the Total Generalized Squared Correlation (TGSC) for a given signature sequence set used in uplink synchronous code division multiple access (S-CDMA) when channel state information is known perfectly at bothtransmitter and receiver. We give a definition of the TGSC based on the eigenvalues of Gram matrix associated to signature sequences set for multipath channels in the presence of the colored noise. Total Squared Correlation (TSC) and Total Weighted Squared Correlation (TWSC) measures are particular cases of TGSC. We present a method for minimizing TGSC (TSC, TWSC) in multipa

APA, Harvard, Vancouver, ISO, and other styles

14

Hasan, Mohd Hasan, Tughrul Arslan Arslan, and John Thompson Thompson. "Low-Power-Adaptive MC-CDMA Receiver Architecture." ETRI Journal 29, no. 1 (2007): 79–88. http://dx.doi.org/10.4218/etrij.07.0106.0101.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

O'Farrell, T., and S. I. Lochmann. "Switched correlator receiver architecture for optical CDMA networks with bipolar capacity." Electronics Letters 31, no. 11 (1995): 905–6. http://dx.doi.org/10.1049/el:19950613.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Tarighat, A., A. Subramanian, and A. H. Sayed. "An uplink DS-CDMA receiver using a robust post-correlation Kalman structure." IEEE Transactions on Wireless Communications 4, no. 3 (2005): 847–54. http://dx.doi.org/10.1109/twc.2005.846973.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Dołowski, Jerzy. "Performance of CDMA systems with Walsh and PN coding." Journal of Telecommunications and Information Technology, no. 2 (June 30, 2001): 41–45. http://dx.doi.org/10.26636/jtit.2001.2.55.

Full text

Abstract:

Wideband CDMA method has been recently investigated for its using in the future communication systems. Such systems capacity depends on many factors, the main is multi-access interference (MAI). MAI~is an inherent CDMA property connected to correlation characteristics of codes used to access and to spreading. The influence on CDMA performance of these codes families and parameters is presented in this paper. The standard Gaussian approximation has been used for interference analysis. Bit error rate (BER) on detector output is a~measure of interference influence on transmission quality. It can

APA, Harvard, Vancouver, ISO, and other styles

18

Zhang, Zhen Yu, Feng Chun Tian, Fan Xin Zeng, Li Jia Ge, and Gui Xin Xuan. "Symbol Timing Sequence Structure for OFDM-CDMA Communication System under Low SNR." Applied Mechanics and Materials 713-715 (January 2015): 1188–92. http://dx.doi.org/10.4028/www.scientific.net/amm.713-715.1188.

Full text

Abstract:

Symbol synchronization offset of orthogonal frequency division multiplexing (OFDM) communication system will cause the rotation of data constellation at receiver even if such offset falls in the range of the appended cyclic prefix. When OFDM modulation is combined with spread spectrum technique, e.g., OFDM code division multiple access (OFDM-CDMA), the problem becomes more serious since OFDM-CDMA communication system generally works under very low signal-to-noise ratio. This paper focuses on symbol timing synchronization of OFDM-CDMA communication system and proposes an effective sequence stru

APA, Harvard, Vancouver, ISO, and other styles

19

Tuzlukov, Vyacheslav. "Performance of Generalized Receiver Employed by Broadband Multicarrier DS-CDMA System Using Space-Time Spreading-Assisted Transmit Diversity." WSEAS TRANSACTIONS ON COMMUNICATIONS 20 (September 29, 2021): 152–71. http://dx.doi.org/10.37394/23204.2021.20.21.

Full text

Abstract:

In this paper the multicarrier direct-sequence code-division multiple access (MC DS-CDMA) using space-time spreading assisted transmit diversity is investigated in the context of broadband wireless communi-cations systems constructed based on the generalized approach to signal processing in noise over frequency-se-lective Rayleigh fading channels. We consider the issue of parameter design for the sake of achieving high-ef-ficiency communications in various dispersive environments. In contrast to the conventional MC DS-CDMA wireless communication system employing the time (T)-domain spreading o

APA, Harvard, Vancouver, ISO, and other styles

20

Ku, Ivan. "Robust multicarrier CDMA receiver for coded power-line communications." IEICE Electronics Express 6, no. 6 (2009): 347–53. http://dx.doi.org/10.1587/elex.6.347.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Deng, Zhong Liang, Yu Zhang, and Xie Yuan. "An Enhanced Weak Signal Acquisition Algorithm for Indoor Positioning Receiver." Applied Mechanics and Materials 411-414 (September 2013): 1510–16. http://dx.doi.org/10.4028/www.scientific.net/amm.411-414.1510.

Full text

Abstract:

This paper focuses on the research of weak signal acquisition based on time-division CDMA-OFDM (TC-OFDM) system by using long PN sequence with low power. An enhanced weak signal acquisition algorithm is proposed to improve the ability of weak signal acquisition compared with regular algorithm which uses short PN sequence with high power. Simulation shows that the ability of resistance to white noise in weak signal acquisition is enhanced by 12dB. Further, because of the good correlation of long PN sequence, the performance of resistance to strong signal interference has also improved 6dB.

APA, Harvard, Vancouver, ISO, and other styles

22

Yen, Chih-Ta, and Guan-Jie Huang. "Optical steganography transmission of optical CDMA signals over a public BPSK channel." Engineering Computations 33, no. 6 (2016): 1810–24. http://dx.doi.org/10.1108/ec-08-2015-0253.

Full text

Abstract:

Purpose – The purpose of this paper is to propose a new optical steganography framework that can be applied to public optical binary phase-shift keying (BPSK) systems by transmitting a stealth spectrum-amplitude-coded optical code-division multiple-access signal through a BPSK link. Design/methodology/approach – By using high-dispersion elements, the stealth data pulses temporally stretch and the amplitude of the signal decreases after stretching. Thus, the signal can be hidden underneath the public signal and system noise. At the receiver end, a polarizer is used for removing the public BPSK

APA, Harvard, Vancouver, ISO, and other styles

23

Wei Huang and I. Andonovic. "Coherent optical pulse CDMA systems based on coherent correlation detection." IEEE Transactions on Communications 47, no. 2 (1999): 261–71. http://dx.doi.org/10.1109/26.752132.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Chuang, Ming‐Hsueh, Hsien‐Wei Tseng, Le‐Pond Chin, Liang‐Lin Jau, Yang‐Han Lee, and Yih‐Guang Jan. "Analysis of system performance for an optical CDMA system implemented with synchronous receiver." Journal of the Chinese Institute of Engineers 32, no. 6 (2009): 861–66. http://dx.doi.org/10.1080/02533839.2009.9671569.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Khaleghi, F., and M. Kavehrad. "A new correlator receiver architecture for noncoherent optical CDMA networks with bipolar capacity." IEEE Transactions on Communications 44, no. 10 (1996): 1335–39. http://dx.doi.org/10.1109/26.539774.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

O'Farrell, T., and S. Lochmann. "Performance analysis of an optical correlator receiver for SIK DS-CDMA communication systems." Electronics Letters 30, no. 1 (1994): 63–65. http://dx.doi.org/10.1049/el:19940069.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Lee, J. H., P. C. Teh, Z. Yusoff, et al. "A holey fiber-based nonlinear thresholding device for optical CDMA receiver performance enhancement." IEEE Photonics Technology Letters 14, no. 6 (2002): 876–78. http://dx.doi.org/10.1109/lpt.2002.1003123.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Aparicio-Esteve, Elena, Álvaro Hernández, Jesús Ureña, José Manuel Villadangos, Sergio Lluva, and María Carmen Pérez-Rubio. "Detecting Relative Amplitude of IR Signals with Active Sensors and Its Application to a Positioning System." Applied Sciences 10, no. 18 (2020): 6412. http://dx.doi.org/10.3390/app10186412.

Full text

Abstract:

Nowadays, there is an increasing interest in smart systems, e.g., smart metering or smart spaces, for which active sensing plays an important role. In such systems, the sample or environment to be measured is irradiated with a signal (acoustic, infrared, radio-frequency…) and some of their features are determined from the transmitted or reflected part of the original signal. In this work, infrared (IR) signals are emitted from different sources (four in this case) and received by a unique quadrature angular diversity aperture (QADA) sensor. A code division multiple access (CDMA) technique is u

APA, Harvard, Vancouver, ISO, and other styles

29

Jurado-Verdu, Cristo, Vicente Matus, Jose Rabadan, Victor Guerra, and Rafael Perez-Jimenez. "Correlation-based receiver for optical camera communications." Optics Express 27, no. 14 (2019): 19150. http://dx.doi.org/10.1364/oe.27.019150.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Santoro, M. A., and P. R. Prucnal. "Asynchronous fiber optic local area network using CDMA and optical correlation." Proceedings of the IEEE 75, no. 9 (1987): 1336–38. http://dx.doi.org/10.1109/proc.1987.13886.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Morelle, Mikaël, Claire Goursaud, Anne Julien-Vergonjanne, Christelle Aupetit-Berthelemot, Jean-Pierre Cances, and Jean-Michel Dumas. "2-Dimensional code design for an optical CDMA system with a parallel interference cancellation receiver." European Transactions on Telecommunications 18, no. 7 (2007): 761–68. http://dx.doi.org/10.1002/ett.1165.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Pham, Anh T., and Ngoc T. Dang. "Performance enhancement of 2-D optical CDMA systems using MCM signalling and heterodyne detection receiver." Transactions on Emerging Telecommunications Technologies 23, no. 7 (2012): 599–603. http://dx.doi.org/10.1002/ett.2512.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Islam, A. K. M. Nazrul, and Satya Prasad Majumder. "Bit Error Rate Performance in CDMA Free Space Optical Links with SIK Receiver under Fog Conditions." MIST INTERNATIONAL JOURNAL OF SCIENCE AND TECHNOLOGY 11 (December 28, 2023): 81–86. http://dx.doi.org/10.47981/j.mijst.11(02)2023.409(81-86).

Full text

Abstract:

This article presents a novel analytical method for evaluating fog's impact on Bit Error Rate (BER) in an Optical Code Division Multiple Access (OCDMA) Free Space Optical (FSO) connection. The investigation employs an optical encoder and direct detection receiver employing a balanced photo detector with Sequence Inverse Keying (SIK) to explore fog effects. By scrutinizing multi-access interference (MAI) current and signal current values at the SIK receiver's output under varied fog conditions, we deduce BER expressions for diverse scenarios. These encompass different fog thickness levels, code

APA, Harvard, Vancouver, ISO, and other styles

34

Wei Huang, I. Andonovic, and M. Tur. "Code acquisition in coherent optical pulse CDMA systems utilizing coherent correlation demodulation." IEEE Transactions on Communications 48, no. 4 (2000): 611–21. http://dx.doi.org/10.1109/26.843128.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Fadhil, Hilal A., Syed A. Aljunid, Hassan Y. Ahmed, and Hamza M. R. AlKhafaji. "Variable cross-correlation code construction for spectral amplitude coding optical CDMA networks." Optik 123, no. 11 (2012): 956–63. http://dx.doi.org/10.1016/j.ijleo.2011.07.011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Ku, Ivan, Sze Wei Lee, and Teong Chee Chuah. "Robust iterative multiuser receiver for coded CDMA systems in non-Gaussian channels." IEICE Electronics Express 4, no. 12 (2007): 380–86. http://dx.doi.org/10.1587/elex.4.380.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

YOSHIDA, H. "A Direct Conversion Receiver for W-CDMA Reducing Current Consumption to 31 mA." IEICE Transactions on Electronics E88-C, no. 6 (2005): 1271–74. http://dx.doi.org/10.1093/ietele/e88-c.6.1271.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Yang, Xu, Chen Zhuang, Wenquan Feng, et al. "A Fast Acquisition Algorithm for Hybrid Signals of 5G and BeiDou B1." Applied Sciences 13, no. 13 (2023): 7818. http://dx.doi.org/10.3390/app13137818.

Full text

Abstract:

With the large-scale use of BeiDou navigation and 5G technology worldwide, integrating BeiDou navigation and communication has become a hot research topic in navigation and positioning technology. Low-cost, miniaturized, and susceptible mixed-signal receivers will become the future receiver technology development trend. However, the current receiver technology still faces the challenge of further improving the positioning service capability and communication quality, which includes the lack of practical analysis of the compatibility between signals and the lack of mixed-signal processing capab

APA, Harvard, Vancouver, ISO, and other styles

39

Park, Sang-Jo, and Bong-Kyu Kim. "Multiple Access Interference Suppressed Sensor Network Using Optical CDMA with Bipolar Receiver and Modified PN Code." KIPS Transactions:PartC 13C, no. 3 (2006): 311–16. http://dx.doi.org/10.3745/kipstc.2006.13c.3.311.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Singh, Jaswinder. "Capacity enhancement of wavelength/time/space asynchronous optical CDMA with relaxed cross-correlation." Optical Fiber Technology 19, no. 6 (2013): 614–17. http://dx.doi.org/10.1016/j.yofte.2013.09.009.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Miyoshi, Yuji, Hirokazu Kubota, and Masaharu Ohashi. "Nyquist OTDM scheme using optical root-Nyquist pulse and optical correlation receiver." IEICE Electronics Express 11, no. 2 (2014): 20130943. http://dx.doi.org/10.1587/elex.10.20130943.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Helmi, Chaouech1 and Ridha Bouallegue2. "CHANNEL ESTIMATION AND MULTIUSER DETECTION IN ASYNCHRONOUS SATELLITE COMMUNICATIONS." International Journal of Wireless & Mobile Networks (IJWMN) 2, no. 4 (2010): 126–39. https://doi.org/10.5281/zenodo.7276622.

Full text

Abstract:

In this paper, we propose a new method of channel estimation for asynchronous additive white Gaussian noise channels in satellite communications. This method is based on signals correlation and multiuser interference cancellation which adopts a successive structure. Propagation delays and signals amplitudes are jointly estimated in order to be used for data detection at the receiver. As, a multiuser detector, a single stage successive interference cancellation (SIC) architecture is analyzed and integrated to the channel estimation technique and the whole system is evaluated. The satellite acce

APA, Harvard, Vancouver, ISO, and other styles

43

Widi Arjana Yasa, I. Ketut, Nyoman Pramaita, and Ni Made Ary Esta Dewi Wirastuti. "DESAIN PROGRAM SIMULASI UNJUK KERJA KODE LARGE KASAMI PADA SISTEM KOMUNIKASI DIRECT SQUENCE SPREAD SPECTRUM MELALUI KANAL MULTIPATH FADING." Jurnal SPEKTRUM 8, no. 3 (2021): 51. http://dx.doi.org/10.24843/spektrum.2021.v08.i03.p7.

Full text

Abstract:

Selection of Pseudo Noise (PN) code in CDMA multiple access is needed to overcomeproblems related to interference. In this study, we simulate the large kasami code with the aimof knowing the performance of the large kasami code on flat fading channels and frequencyselective fading channels with variations in the number of multipath components. The receiversystem uses a correlation receiver to correlate the code used by each user. The simulationresults from the performance of the large kasami code through the flat fading channel show thatthe simulation carried out is valid, where the simulation

APA, Harvard, Vancouver, ISO, and other styles

44

Okassa m’foubat, A., F. Elbahhar, and C. Tatkeu. "Performance evaluation of Passive Optical CDMA Networks using a linear parallel interference receiver in imperfect power cases." Optical Switching and Networking 9, no. 2 (2012): 138–44. http://dx.doi.org/10.1016/j.osn.2011.08.002.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Nazrul Islam, A. K. M., and S. P. Majumder. "Effect of atmospheric turbulence on the BER performance of an optical CDMA FSO link with SIK receiver." Optik 179 (February 2019): 867–74. http://dx.doi.org/10.1016/j.ijleo.2018.08.008.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Yeh, Bih-Chyun. "Noncoherent Spectral Optical CDMA System Using 1D Active Weight Two-Code Keying Codes." Mathematical Problems in Engineering 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/3724843.

Full text

Abstract:

We propose a new family of one-dimensional (1D) active weight two-code keying (TCK) in spectral amplitude coding (SAC) optical code division multiple access (OCDMA) networks. We use encoding and decoding transfer functions to operate the 1D active weight TCK. The proposed structure includes an optical line terminal (OLT) and optical network units (ONUs) to produce the encoding and decoding codes of the proposed OLT and ONUs, respectively. The proposed ONU uses the modified cross-correlation to remove interferences from other simultaneous users, that is, the multiuser interference (MUI). When t

APA, Harvard, Vancouver, ISO, and other styles

47

De-La-Llana-Calvo, Álvaro, José-Luis Lázaro-Galilea, Alfredo Gardel-Vicente, David Rodríguez-Navarro, Borja Rubiano-Muriel, and Ignacio Bravo-Muñoz. "Analysis of Multiple-Access Discrimination Techniques for the Development of a PSD-Based VLP System." Sensors 20, no. 6 (2020): 1717. http://dx.doi.org/10.3390/s20061717.

Full text

Abstract:

There are several technologies and techniques available when developing indoor positioning systems (IPS). Recently, the development of positioning systems based on optical signals has aroused great interest, mainly those using visible light from the lighting infrastructure. In this work, we analyze which techniques give better results to lay the foundations for the development of a Visible Light Positioning system (VLP). Working only with a receiver, it is analyzed what the result of determining the position of different emitters is when they emit simultaneously and without any synchronism. Th

APA, Harvard, Vancouver, ISO, and other styles

48

Zoualfaghari, M. H., and H. Ghafouri-Shiraz. "Uniform Cross-Correlation Modified Prime Code for Applications in Synchronous Optical CDMA Communication Systems." Journal of Lightwave Technology 30, no. 18 (2012): 2955–63. http://dx.doi.org/10.1109/jlt.2012.2207091.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Zhang, Jian-Guo, A. B. Sharma, and Wing C. Kwong. "Cross-correlation and system performance of modified prime codes for all-optical CDMA applications." Journal of Optics A: Pure and Applied Optics 2, no. 5 (2000): L25—L29. http://dx.doi.org/10.1088/1464-4258/2/5/101.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Yoshida, Hiroshi, Takehiko Toyoda, Tadashi Arai, and Hiroshi Tsurumi. "A low DC offset direct conversion receiver for W-CDMA with low current consumption." IEICE Electronics Express 2, no. 15 (2005): 434–39. http://dx.doi.org/10.1587/elex.2.434.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!