Code division multiple access based contingency transmission
First Claim
1. A method for providing a redundant or distinct transmission feature to a communication system, comprising:
- detecting at the communication system if there is a communication systems fault resulting from an operational failure occurring in equipment thereof which prevents a beam produced by an antenna array of said communication system from being properly formed or pointed;
if the communication systems fault is not detected, generating by a transmit system of said communication system a plurality of modified transmit signals by combining a transmit signal with a plurality of complex weights and transmitting the plurality of modified transmit signals from a plurality of antenna elements of said antenna array of the transmit system to an object of interest; and
if the communication systems fault is detected, generating by said transmit system a plurality of redundant or distinct transmit signals by combining the transmit signal with a plurality of first orthogonal or approximately orthogonal numerical sequences and synchronously transmitting the plurality of redundant or distinct transmit signals from the plurality of antenna elements.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems (100) and methods (500) for method for providing a redundant or distinct transmission feature to a communication system (100). The methods involve (508) detecting if there is a communication system fault. If a communication system fault is detected (508:YES), then (512) a plurality of modified transmit signals are generated by combining a transmit signal with a plurality of complex weights (W1, W2, W3). The modified transmit signals are then (514) transmitted from a plurality of antenna elements (106a, 106b, 106c) of the communication system to an object of interest (108). If a communication systems fault is detected (508:NO), then (526) a plurality of redundant or distinct transmit signals are generated by combining the transmit signal with a plurality of first orthogonal or approximately orthogonal numerical sequences. The redundant or distinct transmit signals can then be (528) synchronously transmitted from the antenna elements.
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Citations
18 Claims
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1. A method for providing a redundant or distinct transmission feature to a communication system, comprising:
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detecting at the communication system if there is a communication systems fault resulting from an operational failure occurring in equipment thereof which prevents a beam produced by an antenna array of said communication system from being properly formed or pointed; if the communication systems fault is not detected, generating by a transmit system of said communication system a plurality of modified transmit signals by combining a transmit signal with a plurality of complex weights and transmitting the plurality of modified transmit signals from a plurality of antenna elements of said antenna array of the transmit system to an object of interest; and if the communication systems fault is detected, generating by said transmit system a plurality of redundant or distinct transmit signals by combining the transmit signal with a plurality of first orthogonal or approximately orthogonal numerical sequences and synchronously transmitting the plurality of redundant or distinct transmit signals from the plurality of antenna elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for providing a redundant or distinct transmission feature to a communication system, comprising:
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detecting at the communication system if there is a communication systems fault resulting from an operational failure occurring in equipment thereof which prevents a beam produced by an antenna array of said communication system from being properly formed or pointed; if the communication systems fault is not detected, generating by a transmit system of said communication system a plurality of modified transmit signals by combining a transmit signal with a plurality of complex weights and transmitting the plurality of modified transmit signals from a plurality of antenna elements of said antenna array of the transmit system to an object of interest; and if the communication systems fault is detected, generating by said transmit system a plurality of redundant or distinct transmit signals by combining the transmit signal with a plurality of first orthogonal or approximately orthogonal numerical sequences and synchronously transmitting the plurality of redundant or distinct transmit signals from the plurality of antenna elements; receiving the plurality of redundant or distinct transmit signals at the object of interest and processing the plurality of redundant or distinct transmit signals to recover information contained therein; and generating a plurality of second orthogonal or approximately orthogonal numerical sequences at the object of interest and using the plurality of second orthogonal or approximately orthogonal numerical sequences to despread the plurality of redundant or distinct transmit signals, wherein the plurality of second orthogonal or approximately orthogonal numerical sequences are the same as the plurality of first orthogonal or approximately orthogonal numerical sequences.
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10. A method for providing a redundant or distinct transmission feature to a communication system, comprising:
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detecting at the communication system if there is a communication systems fault resulting from an operational failure occurring in equipment thereof which prevents a beam produced by an antenna array of said communication system from being properly formed or pointed; if the communication systems fault is not detected, generating by a transmit system of said communication system a plurality of modified transmit signals by combining a transmit signal with a plurality of complex weights and transmitting the plurality of modified transmit signals from a plurality of antenna elements of said antenna array of the transmit system to an object of interest; and if the communication systems fault is detected, placing the communication system in redundant data modes in which low spreading ratios and high data rates are employed or in distinct data modes in which high spreading ratios and low data rates are employed, and generating by said transmit system a plurality of redundant or distinct transmit signals by combining the transmit signal with a plurality of first orthogonal or approximately orthogonal numerical sequences and synchronously transmitting the plurality of redundant or distinct transmit signals from the plurality of antenna elements.
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11. A communication system, comprising:
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a detection device for detecting if there is a communication system fault resulting from an operational failure occurring in equipment thereof which prevents a beam produced by an antenna array of said communication system from being properly formed or pointed; a plurality of beamformers for generating a plurality of modified transmit signals by combining a transmit signal with a plurality of complex weights if the communication system fault is not detected; and a plurality of combiners for generating a plurality of redundant or distinct transmit signals by combining the transmit signal with a plurality of first orthogonal or approximately orthogonal numerical sequences if the communication system fault is detected; and a plurality of antenna elements for transmitting the plurality of modified transmit signals to an object of interest and synchronously transmitting the plurality of redundant or distinct transmit signals therefrom. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A communication system, comprising:
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a detection device for detecting if there is a communication system fault resulting from an operational failure occurring in equipment thereof which prevents a beam produced by an antenna array of said communication system from being properly formed or pointed; a plurality of beamformers for generating a plurality of modified transmit signals by combining a transmit signal with a plurality of complex weights if the communication system fault is not detected; and a plurality of combiners for generating a plurality of redundant or distinct transmit signals by combining the transmit signal with a plurality of first orthogonal or approximately orthogonal numerical sequences if the communication system fault is detected; and a plurality of antenna elements for transmitting the plurality of modified transmit signals to an object of interest and synchronously transmitting the plurality of redundant or distinct transmit signals therefrom; wherein the object of interest is configured for receiving the plurality of redundant or distinct transmit signals and processing the plurality of redundant or distinct transmit signals to recover information contained therein; wherein the object of interest is further configured for generating a plurality of second orthogonal or approximately orthogonal numerical sequences and using the plurality of second orthogonal or approximately orthogonal numerical sequences to despread the plurality of redundant or distinct transmit signals, wherein the plurality of second orthogonal or approximately orthogonal numerical sequences are the same as the plurality of first orthogonal or approximately orthogonal numerical sequences.
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Specification