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AssigneeInterDigital Technology Corporation
InventorsD. Ridgely Bolgiano, Gilbert E LaVean
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A wireless communication system combines time and space diversity to reduce fading and simplify receiver design. In particular, a data packet which carries digital telephone traffic, is transmitted at three different times from three different antennas. The mobile subscriber receiver thus receives the same data packet at three different times from three different antennas, and uses the best data packet or combination of the data packets to reduce the effects of fading. A transfer station receives a time division multiplex multiple access (TDMA) signal from a base station carrying telephone data packet traffic to form three data packet repeats at spatially diverse antennas locations. The transfer station further modulates a code division multiple access (CDMA) system using a TDMA signal which links the mobile subscriber receiver to the transfer station. Each data packet received at the transfer station is thus retransmitted at three different times to the mobile subscriber station on a CDMA link.
In a TDMA/CDMA cellular wireless communication system, wherein a switching center derives a data packet from information received from the public switched network, said data packet communicated to a subscriber station, said system including at least one transfer station between the said switching center and said subscriber station, said transfer station receiving said data packet as a TDMA data packet and retransmitting said TDMA data packet enhanced with a spread spectrum code to said subscriber station, said transfer station including a transfer station TDMA data packet receiver, first and second spread spectrum encoder/modulators, first and second spread spectrum transfer station transmitters and first and second antennas spaced apart from each other, a method at said transfer station comprising:
In a TDMA/CDMA cellular wireless communication system, wherein a switching center/central processor derives a data packet from information received from the public switched network, said data packet communicated to a subscriber station, said subscriber station receiving said data packet as a TDMA data packet on a broadcast frequency from an over the air transmission, said TDMA data packet enhanced for over the air transmission with a CDMA spread spectrum modulation, and further including a wideband cable distribution network having a cable distribution headend coupled via a wideband transmission cable to a plurality of spaced apart antennas, said system including at least one centrally located transfer station at said cable distribution headend, said transfer station adapted for receiving said TDMA data packet from either a base station or said switching center/central processor, bandspreading said TDMA data packet with a CDMA spreading code to form a spread TDMA/CDMA signal and distributing said spread TDMA/CDMA signal by said wideband transmission cable, said wideband cable distribution network further including a first remotely located independently addressable antenna and a second remotely located independently addressable antenna disposed at first and second locations spaced apart on said wideband distribution cable respectively, a method comprising:
In a TDMA/CDMA cellular wireless communication system, wherein a switching center derives a data packet from information received from the public switched network, said data packet communicated to a subscriber station, said system including at least one transfer station between the said switching center and said subscriber station, said transfer station receiving said data packet as a TDMA data packet and retransmitting said TDMA data packet enhanced with a spread spectrum code to said subscriber station, said transfer station including a transfer station TDMA data packet receiver, first and second spread spectrum encoder/modulators, first and second spread spectrum transfer station transmitters and first and second antennas spaced apart from each other, an apparatus at said transfer station comprising:
In a TDMA/CDMA cellular wireless communication system, wherein a switching center/central processor derives a data packet from information received from the public switched network, said data packet communicated to a subscriber station, said subscriber station receiving said data packet as a TDMA data packet on a broadcast frequency from an over the air transmission, said TDMA data packet enhanced for over the air transmission with a CDMA spread spectrum modulation, and further including a wideband cable distribution network having a cable distribution headend coupled via a wideband transmission cable to a plurality of spaced apart antennas, said system including at least one centrally located transfer station at said cable distribution headend, said transfer station adapted for receiving said TDMA data packet from either a base station or said switching center/central processor, bandspreading said TDMA data packet with a CDMA spreading code to form a spread TDMA/CDMA signal and distributing said spread TDMA/CDMA signal by said wideband transmission cable, said wideband cable distribution network further including a first remotely located independently addressable antenna and a second remotely located independently addressable antenna disposed at first and second locations spaced apart on said wideband distribution cable respectively, an apparatus comprising:
Dependencies are inferred from the claim text.