MIMO COMMUNICATION SYSTEM HAVING DETERMINISTIC COMMUNICATION PATH AND ANTENNA ARRANGEMENT METHOD THERFOR
First Claim
1. A MIMO communication system having deterministic channels between the transmission side where a plurality of transmission antennas are arranged and the reception side where a plurality of reception antennas are arranged and used in a line-of-sight environment, the system comprisingchannel matrix calculation processing means for calculating a channel matrix for constructing orthogonal channels as the channel on a transmission or reception side or both of the transmission and reception sides,wherein the plurality of transmission antennas and plurality of reception antennas constituting the channel matrix are horizontally arranged with respect to the ground.
1 Assignment
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Accused Products
Abstract
A MIMO communication system having deterministic channels the orthogonality of which can be ensured even if a reflected wave other than the direct wave is present during line-of-sight communication is provided. The MIMO communication system is used in a line-of-sight environment and has deterministic channels between the transmission side where a plurality of transmission antennas are arranged and the reception side where a plurality of reception antennas are arranged. The transmission side, the reception side, or both transmission and reception sides of the MIMO communication system have a channel matrix calculation processing means for calculating a channel matrix for establishing an orthogonal channel as a communication channel. The transmission and reception antennas forming the channel matrix are horizontally arranged with respect to the ground.
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Citations
20 Claims
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1. A MIMO communication system having deterministic channels between the transmission side where a plurality of transmission antennas are arranged and the reception side where a plurality of reception antennas are arranged and used in a line-of-sight environment, the system comprising
channel matrix calculation processing means for calculating a channel matrix for constructing orthogonal channels as the channel on a transmission or reception side or both of the transmission and reception sides, wherein the plurality of transmission antennas and plurality of reception antennas constituting the channel matrix are horizontally arranged with respect to the ground.
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2. A MIMO communication system having deterministic channels between the transmission side where a plurality of transmission antennas are arranged and the reception side where a plurality of reception antennas are arranged and used in a line-of-sight environment, the system comprising
channel matrix calculation processing means for calculating a channel matrix for constructing orthogonal channels as the channel on a transmission or reception side or both of the transmission and reception sides, wherein the plurality of transmission antennas and plurality of reception antennas constituting the channel matrix are vertically arranged with respect to the ground, and antenna height from the ground is made an integral multiple of the antenna interval.
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3. A MIMO communication system having deterministic channels between the transmission side where a plurality of transmission antennas are arranged and the reception side where a plurality of reception antennas are arranged, the system comprising
channel matrix calculation processing means for constructing orthogonal channels as the channels by setting geometric parameters of the channels concerning antenna distance so that the eigenvalue of the channel matrix becomes a multiplicity condition and performing, on the transmission or reception side, matrix calculation using a unitary matrix constituted based on singular vectors obtained from the eigenvalue or singular vectors obtained from the linear combination of eigenvectors, wherein the plurality of transmission antennas and plurality of reception antennas constituting the channels are horizontally arranged with respect to the ground.
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4. A MIMO communication system having deterministic channels between the transmission side where a plurality of transmission antennas are arranged and the reception side where a plurality of reception antennas are arranged, the system comprising
channel matrix calculation processing means for constructing orthogonal channels as the channels by setting geometric parameters of the channels concerning antenna distance so that the eigenvalue of the channel matrix becomes a multiplicity condition and performing, on the transmission or reception side, matrix calculation using a unitary matrix constituted based on singular vectors obtained from the eigenvalue or singular vectors obtained from the linear combination of eigenvectors, wherein the plurality of transmission antennas and plurality of reception antennas constituting the channels are vertically arranged with respect to the ground, and antenna height from the ground is made an integral multiple of the antenna interval.
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11. An antenna arrangement method for a MIMO communication system having deterministic channels between the transmission side where a plurality of transmission antennas are arranged and the reception side where a plurality of reception antennas are arranged and used in a line-of-sight environment, the method comprising
channel matrix calculation processing means for calculating a channel matrix for constructing orthogonal channels as the channel on a transmission or reception side or both of the transmission and reception sides, wherein the plurality of transmission antennas and plurality of reception antennas constituting the channel matrix are horizontally arranged with respect to the ground.
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12-14. -14. (canceled)
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15. A transmitter of a MIMO communication system having deterministic channels between the transmission side where a plurality of transmission antennas are arranged and the reception side where a plurality of reception antennas are arranged and used in a line-of-sight environment, the transmitter comprising
channel matrix calculation processing means for calculating a channel matrix for constructing orthogonal channels as the channel, wherein the plurality of transmission antennas constituting the channel matrix are horizontally arranged with respect to the ground.
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16-18. -18. (canceled)
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19. A receiver of a MIMO communication system having deterministic channels between the transmission side where a plurality of transmission antennas are arranged and the reception side where a plurality of reception antennas are arranged and used in a line-of-sight environment, the receiver comprising
channel matrix calculation processing means for calculating a channel matrix for constructing orthogonal channels as the channel, wherein the plurality of reception antennas constituting the channel matrix are horizontally arranged with respect to the ground.
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20-22. -22. (canceled)
Specification