Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"PN code"”.
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Anti-jamming MTI radar using variable pulse-codes
… pulse compression waveforms such as pseudonoise (PN) coded binary phase-modulated sequences. Repeat-back jamming listens, stores, and repeats back the radar's transmitted signal to block out all other return signals. If a different PN-code is used for each pulse, the radar receiver will be …
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Cater: An Opportunistic Medium Access Control Protocol for Wireless Local Area Networks
… medium access control protocol is called CATER (Code Adapts To Enhance Reliability) and is based on the proposed MAC standard for wireless local area networks (WLAN)-IEEE 802.11 [IEE96]. As currently proposed, IEEE 802.11 uses a fixed pseudo-noise (PN) code for spreading the information signal, …
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Simulation of an Anti-Collision Algorithm for RFID Systems using a Code Division Multiple Access with Adaptive Interference Cancellation (CDMA/AIC) Approach with Dynamic Processing Gain (Gp)
… In addition, research has been conducted with a Code Division Multiple Access (CDMA) approach, called CDMA with Adaptive Interference Cancellation (CDMA/AIC). The time slots are not used for this anti-collision algorithm; instead, Spread Spectrum (SS) technology and Processing Gain (Gp) were …
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Overloaded Array Processing: System Analysis, Signal Extraction Techniques, and Time-delay Estimation
… applications, where each user has a distinct PN-code with good auto- and cross-correlation properties. We show that for spreading gain of 31, the presence of an interpolator enables us to reduce the oversampling factor from 4 to 2 samples per chip. Thus, the requirements of the A/D converter …
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Statistical error compensation for robust digital signal processing and machine learning
… based application. A 180nm CMOS pseudonoise (PN) code acquisition integrated circuit (IC) has been implemented and measured. Measurements show that while maintaining a detection probability Pdet >= 90%, an error rate p_eta >= 85.83% with energy savings of 2.52X could be achieved. SEC is then …
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Signalakquisition in DS-Spreizspektrum-Systemen und ihre Anwendung auf den 3GPP-FDD-Mobilfunkstandard
Robust signal acquisition is an important task in DS-SS receivers. The objective of the acquisition is to coarsely estimate the signal parameters such that the succeeding parameter tracking algorithms can be initialized. In particular, acquisition is needed to coarsely synchronize the receiver to …
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Physical Layer Design for a Spread Spectrum Wireless LAN
A wireless local area network (LAN) system is proposed to provide mobility for existing data communication services. This thesis presents a physical layer design for a direct sequence spread spectrum ISM band radio LAN system. This radio system employs spread spectrum communication technology and a …