H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 7/19 (2006.01) H04B 7/185 (2006.01) H04B 7/216 (2006.01) H04N 7/20 (2006.01) H04H 1/00 (2006.01)
Patent
CA 2289898
A CDM satellite transmission system that broadcasts programming content, such as audio or video information, using two geo-synchronous satellites and a plurality of terrestrial repeaters based on Code Division Multiple Access (CDMA) technology is disclosed. A plurality of programming channels is multiplexed onto a carrier frequency using Code Division Multiple Access (CDMA) technology. A delayed version of the signal is transmitted with the on-time version of the programming content to accommodate uninterrupted reception in the event of a blockage. The on-time and delayed version of each information channel is transmitted by each of the satellites and repeaters, providing additional diversity gains. Thus, the satellites and terrestrial repeaters occupy the entire available bandwidth. CDM transmissions are used where the pseudo-noise sequences are the same, or linear translates of one another. The terrestrial repeaters have a direct line of sight to at least one satellite and repeat the transmission of only one satellite.
Sayeed Zulfiquar
Weerackody Vijitha
Kirby Eades Gale Baker
Lucent Technologies Inc.
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