Search Results - "code division multiple access"

Performance Evaluation of Code Division Multiple Access (CDMA) in terms of Power Measurement and Reduction by Syed Rizwan-ul- Hasan, Shakil Ahmed

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Capacity Enhancement in Free-Space Optics Networks via Optimized Optical Code Division Multiple Access Image Transmission by Somia A. Abd El-Mottaleb, Mehtab Singh, Hassan Yousif Ahmed, Median Zeghid, Maisara Mohyeldin Gasim Mohamed

“…This paper presents a new high-speed RGB image transmission system over Free-Space Optics (FSO) channel employing Optical Code Division Multiple Access (OCDMA) with Permutation Vector (PV) codes. …”
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On The Performance of The Effects of Temperature Variation in Ultrafast Incoherent Fiber-Optic CDMA Systems With SOA-Based Tunable Dispersion Compensator by Che-Wei Chang, Guu-Chang Yang, Ivan Glesk, Wing C. Kwong

Subjects: “…Code division multiple access…”
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Two approaches to multiuser detection over fading channels by V. P. Tuzlukov

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Throughput Performance Evaluation of Multiservice Multirate OCDMA in Flexible Networks by Thiago R. Raddo, Anderson L. Sanches, Idelfonso Tafur Monroy, Ben-Hur V. Borges

Subjects: “…Optical code-division multiple-access (OCDMA)…”
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Performance Analysis and Experimental Investigation of Physical-Layer Security in OCDMA-Based Hybrid FSO/Fiber Wiretap Channel by Jianhua Ji, Qian Huang, Xuemei Chen, Lu Sun

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Design and Investigation of 10 Gb/s FSO Wiretap Channel Using OCDMA Time-Diversity Reception by Jianhua Ji, Bing Wu, Jianjia Zhang, Ming Xu, Ke Wang

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CDMA RoFSO Links With Nonzero Boresight Pointing Errors Over <italic>M</italic> Turbulence Channels by Michalis P. Ninos, Hector E. Nistazakis, Harilaos G. Sandalidis, George S. Tombras

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Throughput Performance Analysis of Asynchronous Optical CDMA Networks With Channel Load Sensing Protocol by Maw-Yang Liu, Ting-Lin Wang, Shu-Ming Tseng

Subjects: “…Optical code-division multiple-access (CDMA)…”
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Pseudo code estimation of LSC-DS-CDMA signal with residual frequency offset by Pan Weiyu, Zhao Zhijin

Subjects: “…long and short code direct spread code division multiple access…”
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Impact of reformed RM Encoded data on PAPR of Multicode CDMA under MSK by S. Rizwan-ul- Hasan, Najeeb Siddiqui, Shakil Ahmed

“… In this research work, the effect of Reformed Reed Muller Encoded Data (RRMED) on Peak to Average Power Ratio (PAPR) of Multicode Code Division Multiple Access (MC-CDMA) systems was studied under Minimum Shift Keying (MSK) modulation. …”
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Study of Uplink Interference in UMTS Network: ASIACELL Company, Iraq by Bakhtiar Ali Karim, Bzhar Rahaman Othman

“…Universal Mobile Telecommunications System (UMTS), is the third generation (3G) of mobile communication which is based on the wideband code division multiple access (W-CDMA) radio access to provide bandwidth and spectral efficiency. …”
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Direct-Sequence-CDMA in Highly Sensitive Indirect Time-of-Flight Distance Sensor by Fabio Schartmuller, Michael Hauser, Alexander Kuttner, Horst Zimmermann, Michael Hofbauer

“…This work presents the application of Direct-Sequence Code-Division-Multiple-Access (DS-CDMA) to tackle the primary problem of simultaneous multi-access of a shared light channel in an indirect Time-of-Flight measurement system based on on-off-keyed (OOK) lasers and highly sensitive single-photon avalanche diodes (SPADs). …”
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Performance Evaluation of MRMED Algorithm by Monitoring BER by SYED RIZWAN-UL-HASAN, Muhammad Tahir

“… In this research work, we have developed a communication system (transmitter / receiver) to control peak to average power (PAPR) with  small bit error rate (BER) for a 4G system called multicode code division multiple access (MCCDMA). Proposed communication system works on modified Reed Muller encoded data (MRMED) string. …”
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A SYNTHESIS METHOD OF BASIC TERNARY BENT-SQUARES BASED ON THE TRIAD SHIFT OPERATOR by O. N. Zhdanov, A. V. Sokolov

“…Practical application of advanced algebraic constructions in modern communication systems based on MC-CDMA (Multi Code Code Division Multiple Access) technology and in cryptography necessitates their further research. …”
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THE CLASS OF PERFECT TERNARY ARRAYS by A. V. Sokolov, O. N. Zhdanov

“…Bent-sequences are used for development of modern cryptographic primitives, as well as for constructing constant amplitude codes (C-codes) used in code division multiple access technology. In turn, perfect binary arrays are used for constructing correction codes, systems of biphase phase- shifted signals and multi-level cryptographic systems. …”
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