US Pat. No. 10,027,374

SYSTEMS AND METHODS FOR WIRELESS COMMUNICATION USING A WIRE-BASED MEDIUM

Cellium Technologies, Ltd...

1. A method for using spatial multiplexing to mitigate wire-based interferences, comprising:converting, by a base converter, a plurality of input streams into a respective plurality of signals occupying different frequency ranges, in which the plurality of input streams are associated with spatial multiplexing;
transporting, by the base converter, the plurality of input signals via a wire-based medium respectively to a plurality of mixers, in which an interference associated with the wire-based medium affects at least one of the signals in one of the frequency ranges, but not all of the signals in all of the frequency ranges;
shifting, by each of the plurality of mixers, the respective one of the signals from the respective frequency range to a single wireless frequency range, thereby creating, respectively, a plurality of output signals, each of the plurality of output signals occupying the single wireless frequency range and corresponding to the respective one of the plurality of input streams; and
transmitting wirelessly the plurality of output signals respectively via a plurality of antennas thereby achieving spatial multiplexing in conjunction with the plurality of output signals all occupying the single wireless frequency range,
wherein at least one of the plurality of output signals transmitted wirelessly is affected by the interference, but not all of the output signals are affected by the interference, thereby facilitating successful decoding of N data streams associated with the spatial multiplexing.

US Pat. No. 10,177,832

USING A COAXIAL CABLE FOR DISTRIBUTING MIMO SIGNALS IN-HOUSE

Cellium Technologies, Ltd...

1. A system operative to use spatial multiplexing in conjunction with a coaxial cable deployed in-house, comprising:a base converter;
a coaxial cable deployed in-house, said coaxial cable reaching into a certain room located in-house; and
a plurality of antennas located in the certain room;
wherein the system is configured to:
convert, in the base converter, a plurality of streams associated with spatial multiplexing, respectively, into a plurality of signals occupying, respectively, a plurality of different frequencies;
transport the plurality of signals, in conjunction with the plurality of different frequencies, via the coaxial cable, into the certain room, thereby enabling a presence of the plurality of signals in the certain room;
shift the plurality of signals into, respectively, a plurality of output signals, in which all said output signals occupy a single wireless frequency, and in which said shift is achieved by up-converting each one of the signals, which are now present in the certain room, from the corresponding one of the different frequencies into the single wireless frequency; and
transmit wirelessly, using only the single wireless frequency, the plurality of output signals, respectively, via the plurality of antennas located in the certain room, all said antennas operating in conjunction with the single wireless frequency, thereby achieving spatial multiplexing in the certain room and in conjunction with the coaxial cable;
wherein the plurality of different frequencies are located below 1.5 GHz, at frequency zones that are, at least momentarily, not occupied by in-house coaxial signals including DOCSIS signals, MoCA signals, and cable TV signals; and
wherein the plurality of streams are input to the base converter, from an access point, in a radio frequency form at frequency bands above 1.5 GHz; and said conversion of the plurality of streams, respectively, into the plurality of signals is performed, respectively, by a plurality of mixers in the base converter, the mixers operating as down-converters.

US Pat. No. 10,148,336

SYSTEMS AND METHODS FOR USING SPATIAL MULTIPLEXING IN CONJUNCTION WITH A MULTI-CONDUCTOR CABLE

Cellium Technologies, Ltd...

1. A method for using spatial multiplexing in conjunction with a plurality of multi-conductor cables, comprising:converting a plurality of streams associated with spatial multiplexing into a plurality of intermediary frequency (IF) signals;
transmitting the plurality of IF signals at least twice: a first time respectively over a plurality of conductors belonging to a first multi-conductor cable reaching a first location, and a second time respectively over a plurality of conductors belonging to a second multi-conductor cable reaching a second location;
shifting, at the first location, the transmitted plurality of IF signals respectively into a first plurality of output signals, each of the first plurality of output signals occupying a single wireless frequency range, and transmitting the first plurality of output signals respectively over a first plurality of antennas, thereby allowing a first client device associated with the first location to utilize said spatial multiplexing in conjunction with the first plurality of output signals; and
shifting, at the second location, the transmitted plurality of IF signals respectively into a second plurality of output signals, each of the second plurality of output signals occupying the single wireless frequency range, and transmitting the second plurality of output signals respectively over a second plurality of antennas, thereby allowing a second client device associated with the second location to utilize said spatial multiplexing in conjunction with the second plurality of output signals.

US Pat. No. 10,716,109

WIRELESS COMMUNICATION SYSTEM

Cellium Technologies, Ltd...

1. A system operative to create a WiFi access zone, comprising:an orthogonal frequency-division multiplexing (OFDM) WiFi access point configured to transmit OFDM WiFi signals; and
at least two hybrid converters communicatively connected to the OFDM WiFi access point, in which each of the hybrid converters, and simultaneously with the other hybrid converters, is configured to receive the OFDM WiFi signals from the OFDM WiFi access point and re-transmit, from at least one antenna associated with each hybrid converter, the OFDM WiFi signals wirelessly;
wherein the OFDM WiFi signals re-transmitted wirelessly, by the at least two hybrid converters simultaneously, are operative to create, using multiple sub-carriers in the OFDM WiFi signals, an access field that is perceived, simultaneously, by at least two OFDM WiFi client devices that are not co-located, as one continuous OFDM WiFi access channel, and without compensating said re-transmissions specifically for any of the at least two OFDM WiFi client devices,
wherein:
the at least two hybrid converters are not co-located, and
a net effect for the multiple sub-carriers, of the at least two separate re-transmissions, is a boost in overall power received by each of the at least two OFDM WiFi client devices.

US Pat. No. 10,484,074

SYSTEMS AND METHODS FOR MAXIMIZING DATA TRANSMISSION RATES IN CONJUNCTION WITH A SPATIAL-MULTIPLEXING TRANSMISSION

Cellium Technologies, LTD...

1. A method for maximizing data transmission rates in conjunction with a spatial-multiplexing transmission, comprising:injecting, in a first room, a plurality of 64-QAM (quadrature-amplitude modulation) or higher modulation signals associated with the spatial-multiplexing transmission into a wire-based medium;
transporting the plurality of signals, via the wire-based medium, to a second room;
power-boosting the plurality of signals in the second room to a power level that is above a certain level per each of the plurality of signals; and
transmitting wirelessly the plurality of signals, which are now power-boosted, into the second room, thereby allowing a receiving wireless device located in the second room to receive the plurality of signals at a combined power level that is above ?50 dBm, thereby allowing the receiving wireless device located in the second room to decode the spatial-multiplexing transmission at 64-QAM or higher modulation, thereby facilitating physical data transmission and decoding rates of above 60 Mbps per each of the signals per a signal bandwidth of 20 MHz.