Fiber Sensor Network for Vessel Monitoring based on Code Division Multiple Access
نویسندگان
چکیده
منابع مشابه
A study of three-dimensional optical code-division multiple-access for optical fiber sensor networks
This study proposes a novel optical fiber sensor (OFS) network using three-dimensional (3-D) wavelength/time/spatial optical code-division multiple-access (OCDMA) scheme. The proposed 3-D modified quadratic congruence/M-matrix (MQC/M-matrix) coding scheme overcome the restriction of single pulse per row inherent in traditional three-dimensional codes and maintain a high signal-to-noise ratio ev...
متن کاملCode Division Multiple Access
1 CDMA Concept 4 1.1 Basic Principles of Spread Spectrum . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.1.1 Direct Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1.2 Frequency Hopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.1.3 Time Hopper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1.4 Hybrid Systems . ....
متن کاملDistributed Reservation-Based Code Division Multiple Access
The use of spread spectrum signaling, motivated primarily by its antijamming capabilities in military applications, leads naturally to the use of Code Division Multiple Access (CDMA) techniques that permit the successful simultaneous transmission by a number of users over a wideband channel. In this paper we address some of the major issues that are associated with the design of multiple access...
متن کاملCDMA – Code Division Multiple Access
Code Division Multiple Access (CDMA) is probably the most interesting multiple access method provided by spread spectrum technology. CDMA refers to a multiple access method in which the individual terminals use spreadspectrum techniques and occupy the entire spectrum whenever they transmit. This paper focuses on direct-sequence spread-spectrum principles (processing gain, spreading, de-spreadin...
متن کاملA study of a Code Division Multiple Access detector based on a recurrent neural network
In this paper a Code Division Multiple Access detector based on a neural network, which is proposed in [4], is considered. It is shown how the choice of an updating scheme and/or the network parameters influences the detector performance. A weight updating scheme that might be used instead of the classical ones is proposed.
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ژورنال
عنوان ژورنال: The Journal of Korea Information and Communications Society
سال: 2011
ISSN: 1226-4717
DOI: 10.7840/kics.2011.36b.10.1216