Design of RFID System Using Spread Spectrum
نویسندگان
چکیده
منابع مشابه
Spread Spectrum using Chaotic System
Chaotic signal helps in a secure communication, by generating wideband spectra of random sequences. Chaotic signal has the property of synchronization; data are transmitted from one location to another by mapping bit sequences to symbols, and symbols to sample functions of analog waveforms. The synchronization between two digital chaotic oscillators, serving as a transmitterreceiver scheme, is ...
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Spread spectrum communication technology, compared with the conventional communication technology, has many characteristics, such as a low interception rate, strong anti-noise performance, noise immunity, information hiding and multiple access communication. Widely used in military communication and civil communication at present, it is the core technology in the third generation mobile communi...
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It has been demonstrated recently than use of chaotic spreading codes can significantly increase transmission privacy for direct-sequence spread spectrum systems. In this note, we consider the problem of receiver synchronization as a dual estimation of the clean state and the underlying model parameters from the observed noisy chaotic signal. An efficient implementation of the demodulator is in...
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Many mobile applications can be greatly enhanced when provided with the locations of people and devices. Indoor ultrasonic positioning system provide fine-grained position data for such applications. This paper describes an ultrasonic tagging system developed for monitoring the location of a moving target. Use of spread spectrum in ultrasonic location system allows the system to work at a noisy...
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ژورنال
عنوان ژورنال: The Journal of the Korea Contents Association
سال: 2007
ISSN: 1598-4877
DOI: 10.5392/jkca.2007.7.3.042