PHYSICAL LAYER NETWORK CODING USING FORWARD ERROR CORRECTION CODES
First Claim
1. A method for exchanging messages through a relay, the method comprising:
- receiving a field order for encoding an outgoing message, the field order being a prime number determined based on a channel condition;
encoding the outgoing message with linear codes over a field of the field order; and
transmitting a signal carrying the encoded outgoing message.
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Accused Products
Abstract
Two network nodes may exchange messages through a relay using physical-layer network coding combined with forward error correction coding (FEC). The relay determines a prime field order based on the channel condition and communicates the field order to the network nodes. Each network node encodes an outgoing message with linear codes over a field such as finite field of the field order, and transmits a signal carrying the encoded outgoing message. The relay receives a composite signal carrying the summation of the messages from the two network nodes. The relay decodes the composite signal and extracts a composite message with linear codes over finite field of field order, and broadcasts a signal carrying the composite message. Each network node receives the signal from the relay and extracts the message intended for it using linear subtraction over finite field of field order.
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Citations
31 Claims
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1. A method for exchanging messages through a relay, the method comprising:
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receiving a field order for encoding an outgoing message, the field order being a prime number determined based on a channel condition; encoding the outgoing message with linear codes over a field of the field order; and transmitting a signal carrying the encoded outgoing message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for relaying message exchange between two network nodes, the method comprising:
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determining a field order based on a channel condition, the field order being a prime number; receiving a first signal carrying a summation of a first message from a first network node and a second message from a second network node; decoding the received signal to generate a composite message with linear codes over a field of the determined field order; and transmitting a second signal carrying the composite message. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A wireless transmit and receive unit (WTRU) for exchanging messages through a relay, the WTRU comprising:
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a transceiver configured to receive a field order for encoding an outgoing message, the field order being a prime number and determined by the relay based on a channel condition; and a processor configured to encode the outgoing message with a linear code over the finite field of the received field order, wherein the transceiver is further configured to transmit a signal carrying the encoded message. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25. A wireless transmit and receive unit (WTRU) for relaying message exchange between two network nodes, the WTRU comprising:
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a transceiver configured to receive a first signal carrying a summation of a first message from a first network node and a second message from a second network node; and a processor configured to; determine a field order based on a channel condition, the field order being a prime number; and decode the received signal to generate a composite message with linear codes over a field of the determined field order, wherein the transceiver is further configured to transmit a second signal carrying the composite message. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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Specification