Results 241 to 250 of about 517,702 (295)
Some of the next articles are maybe not open access.
SPREAD SPECTRUM COMMUNICATION VIA CHAOS
International Journal of Bifurcation and Chaos, 1999A new scheme is proposed for spread spectrum communication which transmits both analog and binary data via chaotic carriers. The proposed systems have some standard properties of spread spectrum communication. Some computer simulations and performance analysis are given to examine the validity of this scheme.
openaire +2 more sources
Spread spectrum communications: myths and realities
IEEE Communications Magazine, 1979Spread spectrum communication techniques date back to the early fifties. Since the earliest applications, system improvements have been more evolutionary than revolutionary. Like most improvements in electronic systems, these are due primarily to the availability of ever higher speed integrated circuit components, which translate in this case ...
openaire +1 more source
Spread Spectrum Communication Systems
1980Publisher Summary This chapter discusses the spread spectrum communication systems. A classical method of information transmission applicable for analog signals that employs such a bandspreading technique, and thereby offers interference suppression is frequency modulation (FM).
P.W. Baier, M. Pandit
openaire +1 more source
Spread-Spectrum Road-Automobile Communications
1991 American Control Conference, 1991There are several issues relevant for spread spectrum communications between roadside beacons and moving vehicles. The goal to achieve a desired error-probability performance and communicate a given amount of information between a beacon and moving vehicles imposes certain requirements on the power, bandwidth, and complexity.
E. Soljanin, W. Wills, C. N. Georghiades
openaire +1 more source
Spread Spectrum Communications—A Review
IETE Technical Review, 1993Spread spectrum communications have been used in military applications since long. They are now finding civilian applications also. This paper presents a review of different techniques of spectrum spreading, despreading, code acquisition and tracking. Some results on anti-jamming have been given.
S L Maskara, S Chakrabarti
openaire +1 more source
OFDM Spread Spectrum Communications
1998Orthogonal frequency division-multiplexing (OFDM) [1, 2] has received considerable attention as a method to efficiently utilize channels with non-flat frequency responses and/or non-white noise. In its most common form, a high rate data stream is divided up among the many carriers in the system in a manner which optimizes the capacity of the overall ...
Amer A. Hassan +2 more
openaire +1 more source
Spread spectrum for mobile communications
IEEE Transactions on Vehicular Technology, 1991The characteristics of spread spectrum that make it advantageous for mobile communications are described. The parameters that determine both the performance and the total capacity are introduced, and an analysis which yields (approximately) the number of users that can simultaneously communicate, while maintaining a specified level of performance, is ...
R.L. Pickholtz +2 more
openaire +1 more source
Spread spectrum for commercial communications
IEEE Communications Magazine, 1991The authors describe how spread spectrum operates and explain why the FCC has allocated several spectral bands for spread spectrum. They examine what is wrong with the spectrum allocations the way they are now. They show who is using and will use spread spectrum and why.
D.L. Schilling +4 more
openaire +1 more source
Spread Spectrum Mobile Radio Communications.
1984Abstract : In this report we present some additional results on the performance of carrier sense multiple access (CSMA) protocol for mobile packet radio networks (MPRNET). This is followed by a review of bandwidth efficient digital modulation for mobile radios and some results on a speech transmission scheme and an analysis of mismatched continuous ...
R. Muammar +3 more
openaire +1 more source
Spread Spectrum for Wireless Communications
1995Though originally developed as a military technology, spread-spectrum communications has achieved widespread commercial acceptance in the last several years. The increased interest in spread spectrum for wireless communications can be attributed to the high spectral effiiciency of Code Division Multiple Access techniques, and to the natural resistance ...
R. M. Buehrer, B. D. Woerner
openaire +1 more source