Switched antenna diversity transmission method and system
First Claim
1. A transmitter for transmitting information packets over a wireless communication medium to a receiver, comprising:
- an error detection encoder for encoding the information packets with an error detection code;
a modulator for modulating the error detection encoded information packets;
a first antenna for transmitting the modulated information packets over a first forward channel of the communication medium to the receiver;
a second antenna for transmitting the modulated information packets over a second forward channel of the communication medium to the receiver in place of the first antenna; and
a switch for switching from the first antenna to the second antenna in response to a negative acknowledgement from the receiver transmitted over a feedback channel of the communication medium.
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Accused Products
Abstract
The present invention is an improved switched antenna diversity transmission system for use with an ARQ error protection protocol. The transmitter of the present invention includes an error detection encoder for encoding information packets with an error detection code, a modulator for modulating the encoded information packets, and a first antenna for transmitting the modulated information packets over a first forward channel of a wireless communication medium to the receiver. The transmitter further includes a switch for switching from the first antenna to a second antenna for transmitting the information packets over a second forward channel of a wireless communication medium in response to a negative acknowledgment from the receiver transmitted over a feedback channel of the wireless communication medium.
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Citations
23 Claims
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1. A transmitter for transmitting information packets over a wireless communication medium to a receiver, comprising:
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an error detection encoder for encoding the information packets with an error detection code; a modulator for modulating the error detection encoded information packets; a first antenna for transmitting the modulated information packets over a first forward channel of the communication medium to the receiver; a second antenna for transmitting the modulated information packets over a second forward channel of the communication medium to the receiver in place of the first antenna; and a switch for switching from the first antenna to the second antenna in response to a negative acknowledgement from the receiver transmitted over a feedback channel of the communication medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of transmitting information packets over a wireless communication medium to a receiver, comprising:
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encoding the information packets with an error detection code; modulating the error detection encoded information packets; transmitting the modulated information packets from a first antenna over a first forward channel of the communication medium to the receiver; and switching from the first antenna to a second antenna for transmitting the modulated packets over a second forward channel of the communication medium in response to a negative acknowledgement from the receiver transmitted over a feedback channel of the communication medium.
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11. A transmitter for transmitting a JPEG image over a wireless communication medium to a receiver with unequal error protection, comprising:
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a separator for separating the JPEG image into Type-I and Type-II information; an error detection encoder for encoding the Type-I information with an error detection code; an error correction encoder for encoding the Type-II information with an error correction code; a modulator for modulating the encoded Type-I and Type-II information; a first antenna for transmitting the modulated Type-I and Type-II information over a first forward channel of the communication medium to the receiver; a second antenna for transmitting the modulated Type-I and Type-II information over a second forward channel of the communication medium to the receiver in place of the first antenna; and a switch for switching from the first antenna to the second antenna in response to a negative acknowledgment from the receiver transmitted over a feedback channel of the communication medium. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A transmitter for transmitting a JPEG image over a wireless communication medium to a receiver with unequal error protection, comprising:
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a separator for separating the JPEG image into Type-IA and Type-IB information; an error detection encoder for encoding the Type-IA information with an error detection code; an error correction encoder for encoding the Type-IB information with an error correction code; a modulator for modulating the encoded Type-IA and Type-IB information; a first antenna for transmitting the modulated Type-IA and Type-IB information over a first forward channel of the communication medium to the receiver; a second antenna for transmitting the modulated Type-IA and Type-IB information over a second forward channel of the communication medium to the receiver in place of the first antenna; and a switch for switching from the first antenna to the second antenna in response to a negative acknowledgment from the receiver transmitted over a feedback channel of the communication medium.
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18. A transmitter for transmitting a JPEG image over a wireless communication medium to a receiver with unequal error protection, comprising:
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a separator for separating the JPEG image into Type-I and Type-II information; an error detection encoder for encoding the Type-I information with an error detection code; a modulator for modulating the encoded Type-I information and the Type-II information; a first antenna for transmitting the modulated Type-I and Type-II information over a first forward channel of the communication medium to the receiver; a second antenna for transmitting the modulated Type-I and Type-II information over a second forward channel of the communication medium to the receiver in place of the first antenna; and a switch for switching from the first antenna to the second antenna in response to a negative acknowledgment from the receiver transmitted over a feedback channel of the communication medium.
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19. A transmitter for transmitting a JPEG image over a wireless communication medium to a receiver with unequal error protection, comprising:
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a separator for separating the JPEG image into Type-IA and Type-IB information; an error detection encoder for encoding the Type-IA information with an error detection code; a modulator for modulating the encoded Type-IA information and the Type-IB information; a first antenna for transmitting the modulated Type-IA and Type-IB information over a first forward channel of the communication medium to the receiver; a second antenna for transmitting the modulated Type-IA and Type-IB information over a second forward channel of the communication medium to the receiver in place of the first antenna; and a switch for switching from the first antenna to the second antenna in response to a negative acknowledgment from the receiver transmitted over a feedback channel of the communication medium.
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20. A method for transmitting a JPEG image over a wireless communication medium to a receiver with unequal error protection, comprising:
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separating the JPEG image into Type-I and Type-II information; encoding the Type-I information with an error detection code; encoding the Type-II information with an error correction code; modulating the encoded Type-I and Type-II information; transmitting the modulated Type-I and Type-II information from a first antenna over a first forward channel of the communication medium to the receiver; and switching from the first antenna to a second antenna for transmitting the modulated Type-I and Type-II information over a second forward channel of the communication medium in response to a negative acknowledgment from the receiver transmitted over a feedback channel of the communication medium.
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21. A method for transmitting a JPEG image over a wireless communication medium to a receiver with unequal error protection, comprising:
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separating the JPEG image into Type-IA and Type-IB information; encoding the Type-IA information with an error detection code; encoding the Type-IA information with an error correction code; modulating the encoded Type-IA and Type-IB information; transmitting the modulated Type-IA and Type-IB information from a first antenna over a first forward channel of the communication medium to the receiver; and switching from the first antenna to a second antenna for transmitting the modulated Type-I and Type-II information over a second forward channel of the communication medium in response to a negative acknowledgment from the receiver transmitted over a feedback channel of the communication medium.
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22. A method of transmitting a JPEG image over a wireless communication medium to a receiver with unequal error protection, comprising:
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separating the JPEG image into Type-I and Type-II information; encoding the Type-I information with an error detection code; modulating the encoded Type-I information and the Type-II information; transmitting the modulated Type-I and Type-II information from a first antenna over a first forward channel of the communication medium to the receiver; and switching from the first antenna to a second antenna for transmitting the modulated Type-I and Type-II information over a second forward channel of the communication medium in response to a negative acknowledgment from the receiver transmitted over a feedback channel of the communication medium.
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23. A method of transmitting a JPEG image over a wireless communication medium to a receiver with unequal error protection, comprising:
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separating the JPEG image into Type-IA and Type-IB information; encoding the Type-IA information with an error detection code; modulating the encoded Type-IA information and the Type-IB information; transmitting the modulated Type-IA and Type-IB information from a first antenna over a first forward channel of the communication medium to the receiver; and switching from the first antenna to a second antenna for transmitting the modulated Type-IA and Type-IB information over a second forward channel of the communication medium in response to a negative acknowledgment from the receiver transmitted over a feedback channel of the communication medium.
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Specification