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Moreover, for a given noise power spectral density (PSD), spread-spectrum systems require the same amount of energy per bit before spreading as narrowband systems and therefore the same amount of power if the bitrate before spreading is the same, but since the signal power is spread over a large bandwidth, the signal PSD is much lower — often ...
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.
George Johann Carl Antheil (/ ˈ æ n t aɪ l / AN-tyle; July 8, 1900 – February 12, 1959) was an American avant-garde composer, pianist, author, and inventor whose modernist musical compositions explored the sounds – musical, industrial, and mechanical – of the early 20th century.
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.
The Fisher was the brand name for high-end, high quality hi-fi electronic equipment manufactured in New York by The Fisher Radio Corp. during the "golden age" of the vacuum tube, which was named after the company founder, Avery Fisher. [9] [10] [11] During this period, similar brands were H.H. Scott, Marantz, Harman Kardon, and McIntosh. Some ...
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Direct-sequence spread-spectrum transmissions multiply the symbol sequence being transmitted with a spreading sequence that has a higher rate than the original message rate. Usually, sequences are chosen such that the resulting spectrum is spectrally white. Knowledge of the same sequence is used to reconstruct the original data at the receiving ...
The company stated that "the spur to developing such a phone was ridding public places of noise," adding that, "the technology is also expected to help people who have permanently lost their voice." [ 11 ] The feasibility of using silent speech interfaces for practical communication has since then been shown.