Ultra-wide bandwidth system and method for in-premises wireless networking
AssigneeAT&T Intellectual Property II, L.P.
InventorsDiakoumis Parissis Gerakoulis, Saeed S. Ghassemzadeh
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Abstract
An IS-OFDM system for ultra-wideband (UWB) wireless communications that suppresses narrow-band interference, comprising an in-premises base station (IBS) is described. The IBS further comprises an IS-OFDM transceiver for communicating with a plurality of in-premises terminals (ITs) without creating interference outside an in-premises perimeter. Further, a method for operating an IS-OFDM system for ultra-wideband (UWB) wireless communications that suppresses narrow-band interference and provides local area networking services, in-premises distribution of broadcast cable channels and in-premises wireless access and routing to external networks is described, without creating interference outside an in-premises perimeter.
Claims19
An interference-suppressing orthogonal frequency division modulation system comprising:
- an in-premises ultra-wide bandwidth network that includes, an in-home base station and an in-home terminal, the in-home base station including:
- an interference-suppressing orthogonal frequency division modulation transceiver configured to communicate with the in-home terminal and including an interference-suppressing orthogonal frequency division modulation receiver and an interference-suppressing orthogonal frequency division modulation transmitter;
- wherein the interference-suppressing orthogonal frequency division modulation receiver is configured to receive a data signal comprising a plurality of data points from a network external to the in-premises ultra-wide bandwidth network;
- and
- wherein the interference-suppressing orthogonal frequency division modulation transmitter is configured to broadcast the data signal that is received to the in-home terminal, the data signal that is received being divided into a first plurality of L frequency groups, each of the L frequency groups being further divided into a second plurality of M orthogonal frequency bins to reduce ultra-wide bandwidth emissions where L and M are integers, and each of the M orthogonal frequency bins receiving a data stream containing the plurality of data points in the received data signal, wherein any one of the plurality of data points in the data signal that is received designated for a particular frequency group is recoverable from any one of the plurality of M orthogonal frequency bins within the particular frequency group, wherein two of the L frequency groups include transmissions from two different users, wherein each group of the L frequency groups comprises a plurality of adjacent frequency bins and each group of the L frequency groups is assigned to a single user, wherein the M orthogonal frequency bins in each group of the L frequency groups are separated from each other by orthogonal hadamard sequences.
A method for operating an interference-suppressing orthogonal frequency division modulation comprising:
- providing an in-premises ultra-wide bandwidth network configured to provide a local area networking service, a wireless distribution of a signal, and wireless access and routing to a network external to the in-premises ultra-wide bandwidth network;
- converting an input data stream into a first plurality of data sub-streams having a first plurality of L frequency groups;
- and
- converting each of the first plurality of L frequency groups of data sub-streams into a second plurality of orthogonal data sub-streams having a second set of M orthogonal frequency bins to reduce interference outside a perimeter, where L and M are integers, wherein the input data stream includes a plurality of data points and each of the second plurality of orthogonal data sub-streams contains all data points contained in the input data stream, wherein two of the L frequency groups include transmissions from two different users, wherein each group of the L frequency groups comprises a plurality of adjacent frequency bins and each group of the L frequency groups is assigned to a single user, wherein the M orthogonal frequency bins in each group of the L frequency groups are separated from each other by orthogonal hadamard sequences.
A method for operating an interference-suppressing orthogonal frequency division modulation comprising:
- receiving at an in-premises ultra-wide bandwidth network an input data stream containing a plurality of data points from a source external to the in-premises ultra-wide bandwidth network;
- converting the input data stream into a first plurality of L frequency groups;
- converting each of the first plurality of L frequency groups into M orthogonal frequency bins to reduce ultra-wide bandwidth emissions outside a perimeter of the in-premises ultra-wide bandwidth network;
- and
- receiving a first orthogonal data sub-stream, the first orthogonal data sub-stream being at a frequency contained within one of the M orthogonal frequency bins and containing one of the plurality of data points contained in the input data stream, where L and M are integers, wherein two of the L frequency groups include transmissions from two different users, wherein each group of the L frequency groups comprises a plurality of adjacent frequency bins and each group of the L frequency groups is assigned to a single user, wherein the M orthogonal frequency bins in each group of the L frequency groups are separated from each other by orthogonal hadamard sequences.
A base station for interference-suppressing orthogonal frequency division modulation within an in-premises ultra-wide bandwidth network comprising:
- an interference-suppressing orthogonal frequency division modulation transceiver configured to communicate with an in-home terminal and including:
- an interference-suppressing orthogonal frequency division modulation receiver configured to receive a data signal having a plurality of data points from a network external to the in-premises ultra-wide bandwidth network;
- and
- an interference-suppressing orthogonal frequency division modulation transmitter configured to broadcast a data signal to the in-home terminal, the data signal being divided into a first plurality of L frequency groups, each of the first plurality L frequency groups being further divided into a second plurality of M orthogonal frequency bins to reduce ultra-wide bandwidth emissions outside a perimeter of the in-premises ultra-wide bandwidth network, where L and M are integers, and each of the second plurality of M orthogonal frequency bins receives a data stream containing the plurality of data points in the data signal wherein any one of the plurality of data points in the data signal designated for a particular frequency group is recoverable from any one of the second plurality of M orthogonal frequency bins within the particular frequency group, wherein two of the L frequency groups include transmissions from two different users, wherein each group of the L frequency groups comprises a plurality of adjacent frequency bins and each group of the L frequency groups is assigned to a single user, wherein the M orthogonal frequency bins in each group of the L frequency groups are separated from each other by orthogonal hadamard sequences.
An in-home terminal configured for use in an interference-suppressing orthogonal frequency division modulation system in an in-premises ultra-wide bandwidth network including a receiver configured to receive a signal transmitted over a frequency and a transmitter configured to transmit data to one of an in-home base station or a second in-home terminal, the data being transmitted over one of a first plurality of L frequency groups, the first plurality of L frequency groups being further divided into a second plurality of M frequency bins, wherein the transmitted signal comprises a plurality of data points designated for a particular frequency group, and wherein the transmitted signal is recoverable from any one of the second plurality of M frequency bins within the particular frequency group, wherein two of the L frequency groups include transmissions from two different users, wherein each group of the L frequency groups comprises a plurality of adjacent frequency bins and each group of the L frequency groups is assigned to a single user, wherein the M orthogonal frequency bins in each group of the L frequency groups are separated from each other by orthogonal hadamard sequences.
Dependencies are inferred from the claim text.