Geometrical closed loop line of sight (LOS) multiple-input-multiple-output (MIMO)
First Claim
1. An apparatus comprising:
- a first communication device that includes;
a first plurality of antennae configured to transmit a signal; and
a first processor configured to process the signal using a first of a plurality of channel matrices that correspond to a singular value decomposition (SVD) of a line of sight (LOS) multiple-input-multiple-output (MIMO) communication channel between the first communication device and a second communication device into a plurality of independent streams at the first communication device; and
the second communication device includes;
a second plurality of antennae configured to receive the signal transmitted from the first plurality of antennae of the first communication device via the LOS MIMO communication channel; and
a second processor configured to process the signal using a second of the plurality of channel matrices, corresponding to the SVD, wherein the first of the plurality of channel matrices and the second of the plurality of channel matrices operate cooperatively to effectuate an increase in information carrying capacity of the signal via the LOS MIMO communication channel, and wherein the plurality of channel matrices that correspond to the SVD include the first of the plurality of channel matrices, a matrix having only entries on a diagonal thereof, and the second of the plurality of channel matrices.
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Accused Products
Abstract
Geometrical closed loop line of sight (LOS) multiple-input-multiple-output (MIMO). Singular value decomposition (SVD) processing for a LOS communication channel into respective channel matrices, and appropriate processing of signals within transmitter and/or receiver communication devices operate to support very high data throughput, including approaching or converging to the Shannon limit channel capacity (e.g., bits/sec/Hz). Certain communication systems operate with multi-antenna communication devices, and sometimes, the optimal spacing between those respective antennae cannot be achieved. Appropriate processing can recover most, if not all, of any performance degradation as may be incurred by a deviation from the perfectly optimal spacing between those respective antennae. In addition, any deleterious effects of phase noise among the antennae may be mitigated by driving the antennae using a common or singular local oscillator, or tracking the communication channel (e.g., channel estimation, tracking, etc.) and updating the respective SVD channel matrices based upon such phase noise.
27 Citations
20 Claims
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1. An apparatus comprising:
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a first communication device that includes; a first plurality of antennae configured to transmit a signal; and a first processor configured to process the signal using a first of a plurality of channel matrices that correspond to a singular value decomposition (SVD) of a line of sight (LOS) multiple-input-multiple-output (MIMO) communication channel between the first communication device and a second communication device into a plurality of independent streams at the first communication device; and the second communication device includes; a second plurality of antennae configured to receive the signal transmitted from the first plurality of antennae of the first communication device via the LOS MIMO communication channel; and a second processor configured to process the signal using a second of the plurality of channel matrices, corresponding to the SVD, wherein the first of the plurality of channel matrices and the second of the plurality of channel matrices operate cooperatively to effectuate an increase in information carrying capacity of the signal via the LOS MIMO communication channel, and wherein the plurality of channel matrices that correspond to the SVD include the first of the plurality of channel matrices, a matrix having only entries on a diagonal thereof, and the second of the plurality of channel matrices. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus comprising:
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a first plurality of antennae configured to receive a signal transmitted from a second plurality of antennae of at least one additional apparatus via a communication channel between the apparatus and the at least one additional apparatus; and a processor configured to; process the signal using one of a plurality of channel matrices that correspond to a singular value decomposition (SVD) of the communication channel into a plurality of independent streams at the at least one additional apparatus to effectuate an increase in information carrying capacity of the signal; and perform zero forcing equalization (ZFE) on the signal to effectuate the increase in information carrying capacity of the signal. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A method for execution by a communication device, the method comprising:
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operating a first plurality of antennae of the communication device to receive a signal transmitted from a second plurality of antennae of at least one additional communication device via a line of sight (LOS) multiple-input-multiple-output (MIMO) communication channel between the communication device and the at least one additional communication device; processing the signal using one of a plurality of channel matrices that correspond to a singular value decomposition (SVD) of the LOS MIMO communication channel into a plurality of independent streams at the at least one additional communication device to effectuate an increase in information carrying capacity of the signal; and performing zero forcing equalization (ZFE) on the signal to effectuate the increase in information carrying capacity of the signal. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification