Reconfigurable Antennas And Configuration Selection Methods For Ad-Hoc Networks
First Claim
1. An ad-hoc network system, comprising:
- at least one multi-element reconfigurable transmitter and/or at least one multi-element reconfigurable receiver, each said multi-element reconfigurable transmitter and each said multi-element reconfigurable receiver comprising multiple antennas where each antenna is capable of changing a radiation pattern and/or a polarization of a radiated field; and
a processor that processes software implementing a configuration selection method for selecting an antenna configuration for said at least one multi-element reconfigurable transmitter and/or receiver based on knowledge of all or part of communication and interference channels in the ad-hoc network, where the antenna configuration is selected based on changes in interference in a transmission over a transmission link including the antenna being configured, a transmission rate of at least one transmitter, a received signal strength of at least one receiver, an error vector magnitude of at least one receiver, a channel matrix of at least one receiver, and/or a packet error rate of at least one of the receivers or transmitters of the transmission link, wherein the selected antenna configuration optimizes a sum capacity of the ad-hoc network, a sum throughput of the ad-hoc network, and/or an error rate of the ad-hoc network.
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Abstract
Reconfigurable antennas in an ad-hoc network are provided where all nodes employ MIMO/SIMO/MISO communication techniques. Three types of reconfigurable antennas: Reconfigurable Printed Dipole Array (RPDA), Reconfigurable Circular Patch Antenna (RCPA) and Two-Port Reconfigurable CRLH Leaky Wave Antennas are used. The RPDA, RCPA and the CRLH Leaky Wave antennas have a different number of configurations as well as different degrees of pattern diversity between possible configurations. To effectively use these antennas in a network, the performance of centralized and decentralized antenna configuration selection schemes are quantified for reconfiguration at one or both link ends. The sum capacity of the network is used as a metric to quantify the performance of these antennas in measured and simulated network channels.
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Citations
15 Claims
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1. An ad-hoc network system, comprising:
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at least one multi-element reconfigurable transmitter and/or at least one multi-element reconfigurable receiver, each said multi-element reconfigurable transmitter and each said multi-element reconfigurable receiver comprising multiple antennas where each antenna is capable of changing a radiation pattern and/or a polarization of a radiated field; and a processor that processes software implementing a configuration selection method for selecting an antenna configuration for said at least one multi-element reconfigurable transmitter and/or receiver based on knowledge of all or part of communication and interference channels in the ad-hoc network, where the antenna configuration is selected based on changes in interference in a transmission over a transmission link including the antenna being configured, a transmission rate of at least one transmitter, a received signal strength of at least one receiver, an error vector magnitude of at least one receiver, a channel matrix of at least one receiver, and/or a packet error rate of at least one of the receivers or transmitters of the transmission link, wherein the selected antenna configuration optimizes a sum capacity of the ad-hoc network, a sum throughput of the ad-hoc network, and/or an error rate of the ad-hoc network. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An ad-hoc network system, comprising:
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at least one multi-element reconfigurable transmitter and/or at least one multi-element reconfigurable receiver, each said multi-element reconfigurable transmitter and each said multi-element reconfigurable receiver comprising multiple antennas where each antenna is capable of changing a radiation pattern and/or a polarization of a radiated field; and a processor that processes software implementing a distributed configuration selection method for selecting an antenna configuration for said at least one multi-element reconfigurable transmitter and/or receiver, where the antenna configuration is selected using link channel and interference noise plus a noise covariance matrix, a transmission rate, a received signal strength, an error vector magnitude, a channel matrix, and/or a packet error rate for the transmission link including the antenna being configured by optimizing the link capacity, link throughput, or the link packet error rate of said transmission link.
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9. A method for selecting a configuration of at least one multi-element reconfigurable transmitter and/or at least one multi-element reconfigurable receiver in an ad-hoc network, each said multi-element reconfigurable transmitter and each said multi-element reconfigurable receiver comprising multiple antennas where each antenna is capable of changing a radiation pattern and/or a polarization of a radiated field, comprising:
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a processor selecting an antenna configuration for said at least one multi-element reconfigurable transmitter and/or at least one multi-element reconfigurable receiver of a transmission link in said ad-hoc network; measuring or estimating interference, a channel matrix, a transmission rate, a received signal strength, an error vector magnitude, and/or an error packet rate of said transmission link in said ad-hoc network including an antenna of the transmitter and/or receiver to be configured; and selecting an antenna configuration for another transmission link in said ad-hoc network based on based on knowledge of all or part of communication and interference channels in the ad-hoc network and said measured or estimated interference, channel matrix, transmission rate, received signal strength, error vector magnitude, and/or error packet rate of said transmission link, wherein the selected antenna configuration optimizes a sum capacity of the ad-hoc network, a sum throughput of the ad-hoc network, and/or an error rate of the ad-hoc network. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method for selecting a configuration of at least one multi-element reconfigurable transmitter and/or at least one multi-element reconfigurable receiver in an ad-hoc network, each said multi-element reconfigurable transmitter and each said multi-element reconfigurable receiver comprising multiple antennas where each antenna is capable of changing a radiation pattern and/or a polarization of a radiated field, comprising:
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a processor selecting an antenna configuration for said at least one multi-element reconfigurable transmitter and/or at least one multi-element reconfigurable receiver of a transmission link in said ad-hoc network; measuring or estimating interference, a channel matrix, a transmission rate, a received signal strength, an error vector magnitude, and/or an error packet rate of said transmission link in said ad-hoc network including an antenna of the transmitter and/or receiver to be configured; and selecting an antenna configuration for another transmission link in said ad-hoc network by implementing a distributed configuration selection process that selects the antenna configuration using link channel and interference noise plus a noise covariance matrix, a transmission rate, a received signal strength, an error vector magnitude, a channel matrix, and/or a packet error rate for the transmission link including the antenna being configured by optimizing the link capacity, link throughput, or the link packet error rate of said transmission link.
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Specification