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ASIC implementation of a direct-sequence spread-spectrum RAKE-receiver
Proceedings of IEEE Vehicular Technology Conference (VTC), 2002Presents the design of two application-specific integrated circuits (ASIC) for spread-spectrum wireless local area networks (WLAN) providing data rates up to 2 Mb/s. The first device is a chip matched filter, which performs square root raised cosine transmit/receive filtering, while the second implements complex correlations and coherent BPSK/QPSK ...
Stephen D. Lingwood +2 more
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Adaptive Direct-Sequence Spread-Spectrum for Packet Radio Networks
IEEE Transactions on Aerospace and Electronic Systems, 2013Our protocol adapts the error-control code and spreading factor on the links of a direct-sequence (DS) spread-spectrum packet radio network. The radios employ half-duplex transmission, and they operate with fixed power and bandwidth. There are no base stations, access points, or other infrastructure, and the protocol requires no power measurements or ...
Steven W. Boyd, Michael B. Pursley
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Acquisition of direct sequence spread spectrum signals with correlated fading
IEEE Journal on Selected Areas in Communications, 2001Antenna diversity is an effective way of improving the performance of a communication system, especially for initial acquisition in a narrowband code division multiple access (CDMA) system that operates in a flat fading environment. Earlier attempts to analyze such systems assume independent fading at various antenna elements.
Prasad Shamain, Laurence B. Milstein
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Analysis of a direct-sequence spread-spectrum cellular radio system
IEEE Transactions on Communications, 1993The uplink and downlink performance of a digital cellular radio system that uses direct sequence code division multiple access is evaluated. Approximate expressions are derived for the area averaged bit error probability while accounting for the effects of path loss, log-normal shadowing, multipath-fading, multiple-access interference, and background ...
Chamroeun Kchao, Gordon L. Stüber
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Direct sequence spread spectrum radio LANs
IEE Colloquium on Radio LANs and MANs, 1995The performance of direct sequence spread spectrum (DSSS) ISM (2.4-2.5 GHz) band radio local area networks (RLANs) using BPSK modulation and matched filter receivers is investigated. Short and long pseudonoise (PN) spreading sequences, a Barker code and an M-sequence, have been employed in both differential and coherent systems operating in a Rayleigh ...
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Extending Direct Sequence Spread-Spectrum for Secure Communication
2021 International Symposium on Networks, Computers and Communications (ISNCC), 2021Avinash Kumar, Ye Zhu 0001
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Detection of direct sequence spread spectrum signals
2014Since early experimentation in the late 1800's, wireless communication has become increasingly important and has been widely adopted by civilian and military markets worldwide. The proliferation of wireless communication systems presents new challenges, threats and opportunities for society and government institutions.
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Acquisition of Direct-Sequence Spread-Spectrum Signals
1997In order to successfully demodulate a digitally modulated signal, the receiver must first synchronize its oscillators and clocks to the received signal. If direct-sequence spread-spectrum modulation is used, then it is also necessary to synchronize to the code sequence that was used to produce the spectral spreading.
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