Spread spectrum
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Spread-spectrum telecommunications is a signal structuring technique that employs direct sequence, frequency hopping, or a hybrid of these, which can be used for multiple access and/or multiple functions. This technique decreases the potential interference to other receivers while achieving privacy. Spread spectrum generally makes use of a sequential noise-like signal structure to spread the normally narrowband information signal over a relatively wideband (radio) band of frequencies. The receiver correlates the received signals to retrieve the original information signal. Originally there were two motivations: either to resist enemy efforts to jam the communications (anti-jam, or AJ), or to hide the fact that communication was even taking place, sometimes called low probability of intercept (LPI).
- See also: Wikipedia
- Related: Open spectrum, Electromagnetic compatibility, Electromagnetic interference, Frequency allocation, Process gain, Time-hopping spread spectrum, HAVE QUICK, Ultra-wideband, Hedy Lamarr
| HF Frequency Hopping HF Frequency Hopping hf-ssb-transceiver.at-communication.com/.../frequency_hopping.html - Web |
| A short history of spread spectrum A short history of spread spectrum www.eetimes.com/.../A-short-history-of-spread-spectrum?Ecosystem=microwave-rf-design - Web |
| HF VHF UHF Spread Spectrum Radio HF VHF UHF Spread Spectrum Radio hf-military-tactical-radio.at-communication.com/.../rsi8100.html - Web |
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| CDMA and spread spectrum CDMA and spread spectrum www.telecomspace.com/cdma.html - Web |
| Information about the use of spread spectrum for r... Information about the use of spread spectrum for reduced AGP EMI www.rojakpot.com/showFreeBOG.aspx?Lang=0&bogno=114 - Web |
| Spread Spectrum Scene newsletter Spread Spectrum Scene newsletter sss-mag.com/index.html - Web |
| Presentations at 4/08 George Mason University conf... Presentations at 4/08 George Mason University conference on unlicensed spread spectrum history iep.gmu.edu/UnlicensedWireless - Web |
| Interview for the Indian press with Hedy Lamarr's ... Interview for the Indian press with Hedy Lamarr's (the inventor of spread spectrum) son, Anthony loder, on the impact of her invention www.hedylamarr.org/deccan_article.html - Web |
