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History on spread spectrum, as given in "Smart Mobs, The Next Social Revolution", Howard Rheingold, ISBN 0-7382-0608-3 Władysław Kozaczuk , Enigma: How the German Machine Cipher Was Broken, and How It Was Read by the Allies in World War Two , edited and translated by Christopher Kasparek , Frederick, MD, University Publications of America ...
In the US, FCC part 15 on unlicensed spread spectrum systems in the 902–928 MHz and 2.4 GHz bands permits more power than is allowed for non-spread-spectrum systems. Both FHSS and direct-sequence spread-spectrum (DSSS) systems can transmit at 1 watt, a thousandfold increase from the 1 milliwatt limit on non-spread-spectrum systems.
CDMA is a spread-spectrum multiple-access technique. A spread-spectrum technique spreads the bandwidth of the data uniformly for the same transmitted power. A spreading code is a pseudo-random code in the time domain that has a narrow ambiguity function in the frequency domain, unlike other narrow pulse codes. In CDMA a locally generated code ...
Robert Arno Scholtz (born c. 1936) is a distinguished professor of electrical engineering at University of Southern California, known for ultra-wideband and spread spectrum communications. [1] [2] A 1958 graduate and distinguished alumnus from University of Cincinnati, he obtained his PhD at Stanford University in 1964. [3]
In digital communications, a chip is a pulse of a direct-sequence spread spectrum (DSSS) code, such as a pseudo-random noise (PN) code sequence used in direct-sequence code-division multiple access (CDMA) channel access techniques.
Spektrum DX6i six-channel spread spectrum computerized aircraft radio which may be used for both helicopters and fixed-wing models. Spektrum is a brand of radio control systems designed for use with hobby radio-controlled cars and aircraft. Spektrum is a division of Horizon Hobby.
Canada is set to begin a hotly anticipated auction of the mobile telecommunications bandwidth necessary for 5G rollout, one that was delayed more than a year by the pandemic. The 3,500 MHz is a ...
In the most widely used mode, transmission power is limited to 1 milliwatt, giving it a very short range of up to 10 m (30 feet). The system uses frequency-hopping spread spectrum transmission, in which successive data packets are transmitted in a pseudorandom order on one of 79 1 MHz Bluetooth channels between 2.4 and 2.83 GHz in the ISM band.
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