Proceedings ArticleDOI
Synchronization in a Spread Spectrum Communication Modem based on SAW Convolvers
M. Kowatsch
- Vol. 1, Iss: 1, pp 125-130
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TLDR
The synchronization process in a spread spectrum burst communication system which is based on the application of surface acoustic wave (SAW) convolvers, and the performance of the receiver synchronization in the presence of additive white Gaussian noise is analyzed.Abstract:
This paper describes the synchronization process in a spread spectrum burst communication system which is based on the application of surface acoustic wave (SAW) convolvers. The data modulation is binary code shift keying (CSK). For spectrum spreading pseudonoise (PN) direct-sequence (DS) is employed. The performance of the receiver synchronization in the presence of additive white Gaussian noise is analyzed, the measure of performance being the probability of burst loss. Special attention is paid to the effect of code autocorrelation sidelobes on the detection of the synchronization preamble, and a strategy for the elimination of this effect is considered. Theoretical performance is compared with some experimental results obtained with a test modem.read more
Citations
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Proceedings ArticleDOI
Design of a Convolver-Based Packet Voice Spread Spectrum System
TL;DR: A spread spectrum system for the transmission of packet voice has been developed and measures of performance being the probability of burst loss and the bit error probability in an additive white Gaussian noise channel are in good agreement with theoretical predictions.
Journal ArticleDOI
An Application of SAW Convolvers to Spread-Spectrum Transmission of Packet Voice
TL;DR: Experimental results on the performance of the spread spectrum modem are presented and compared with theory.
Book ChapterDOI
Message protection by spread spectrum modulation in a packet voice radio link
TL;DR: The two most common forms of spread spectrum modulation are direct-sequence (DS) and frequency-hopping (FH), the first of which is considered in this paper.
Proceedings ArticleDOI
Multiple signal reception in lower SNR
Zhou Yigang,Wu Zhongyi +1 more
TL;DR: A multiple signal reception system with a low signal-noise-ratio (SNR) based on centralized spread-spectrum packet radio networks is presented and the method of large time-bandwidth product and digital accumulation technique is discussed in detail.
References
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Journal ArticleDOI
Crosscorrelation properties of pseudorandom and related sequences
TL;DR: This paper presents a survey of recent results and provides several new results on the periodic and aperiodic crosscorrelation functions for pairs of m-sequences and for Pair of related (but not maximal-length) binary shift register sequences.
Journal ArticleDOI
Advances in packet ratio technology
TL;DR: Various aspects of spread spectrum transmission in the network environment are identified and the experience with a testbed network in the San Francisco Bay area is discussed.
Proceedings ArticleDOI
Fast Synchronization in a Spread-Spectrum System Based on Acoustoelectric Convolvers
D. Brodtkorb,J.E. Laynor +1 more
TL;DR: A wideband PN spread-spectrum modem has been implemented using a pair of acoustoelectric convolvers as programmable matched filters in combination with digital delay and coincidence gating to achieve coarse synchronization to a precision of one PN chip using only four preamble bits.
Proceedings ArticleDOI
SAW Processors vs. Competing Technologies for Spread Spectrum Data Link Applications
TL;DR: In this article, the authors examine the area of spread spectrum communications to gain insight into the following questions: What functions are needed? What are the parameter requirements? What is the production opportunities? How does SAW technology compete? Is more RSD required? System factors that drive technology selection include data rate and fidelity requirements, jam-resistance and synchronization needs, production volume and cost.
Proceedings ArticleDOI
A DS/FH Burst Communication Modem based on SAW Elastic Convolvers
TL;DR: This paper presents a burst-type spread spectrum communication modem with binary orthogonal code shift keying (CSK) employed for data modulation with good agreement with theory.