TRANSMISSION SCHEMES FOR RELAY
First Claim
1. A method for wireless communication, comprising:
- obtaining received symbols from a plurality of subcarriers in a first symbol period at a relay;
generating output symbols based on the received symbols, without demodulating or decoding the received symbols; and
transmitting the output symbols on the plurality of subcarriers in a second symbol period by the relay.
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Accused Products
Abstract
Techniques for processing and forwarding transmissions by a relay are disclosed. In one aspect, an orthogonal distributed space-time frequency code (DSTFC) scheme that supports full-duplex relay operation and mitigates self-interference is disclosed. With the orthogonal DSTFC scheme, a source node transmits a same modulation symbol on two subcarriers in one symbol period. The relay obtains two received symbols from the two subcarriers and generates two output symbols based on these received symbols such that the output symbols and the modulation symbol are orthogonal at the relay and a destination node. In another aspect, a distributed Alamouti scheme is disclosed in which the source node transmits two modulation symbols on two subcarriers in each of two consecutive symbol periods. The relay obtains two received symbols from the two subcarriers in one symbol period and generates two output symbols based on the received symbols and in accordance with an Alamouti code.
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Citations
51 Claims
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1. A method for wireless communication, comprising:
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obtaining received symbols from a plurality of subcarriers in a first symbol period at a relay; generating output symbols based on the received symbols, without demodulating or decoding the received symbols; and transmitting the output symbols on the plurality of subcarriers in a second symbol period by the relay. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An apparatus for wireless communication, comprising:
at least one processor configured to; obtain received symbols from a plurality of subcarriers in a first symbol period at a relay; generate output symbols based on the received symbols, without demodulating or decoding the received symbols; and send the output symbols on the plurality of subcarriers in a second symbol period by the relay. - View Dependent Claims (21, 22, 23, 24, 25)
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26. An apparatus for wireless communication, comprising:
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means for obtaining received symbols from a plurality of subcarriers in a first symbol period at a relay; means for generating output symbols based on the received symbols, without demodulating or decoding the received symbols; and means for transmitting the output symbols on the plurality of subcarriers in a second symbol period by the relay. - View Dependent Claims (27, 28, 29, 30, 31)
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32. A computer program product, comprising:
a non-transitory computer-readable medium comprising; code for causing at least one computer to obtain received symbols from a plurality of subcarriers in a first symbol period at a relay; code for causing the at least one computer to generate output symbols based on the received symbols, without demodulating or decoding the received symbols; and code for causing the at least one computer to send the output symbols on the plurality of subcarriers in a second symbol period by the relay.
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33. A method for wireless communication, comprising:
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obtaining first received symbols from a plurality of subcarriers in a first symbol period at a destination node; obtaining second received symbols from the plurality of subcarriers in a second symbol period at the destination node, wherein the first and second received symbols comprise modulation symbols transmitted on the plurality of subcarriers by a source node and output symbols transmitted on the plurality of subcarriers by a relay; and processing the first and second received symbols to recover data sent in the modulation symbols by the source node. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. An apparatus for wireless communication, comprising:
at least one processor configured to; obtain first received symbols from a plurality of subcarriers in a first symbol period at a destination node; obtain second received symbols from the plurality of subcarriers in a second symbol period at the destination node, wherein the first and second received symbols comprise modulation symbols transmitted on the plurality of subcarriers by a source node and output symbols transmitted on the plurality of subcarriers by a relay; and process the first and second received symbols to recover data sent in the modulation symbols by the source node. - View Dependent Claims (44, 45, 46)
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47. An apparatus for wireless communication, comprising:
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means for obtaining first received symbols from a plurality of subcarriers in a first symbol period at a destination node; means for obtaining second received symbols from the plurality of subcarriers in a second symbol period at the destination node, wherein the first and second received symbols comprise modulation symbols transmitted on the plurality of subcarriers by a source node and output symbols transmitted on the plurality of subcarriers by a relay; and means for processing the first and second received symbols to recover data sent in the modulation symbols by the source node. - View Dependent Claims (48, 49, 50)
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51. A computer program product, comprising:
a non-transitory computer-readable medium comprising; code for causing at least one computer to obtain first received symbols from a plurality of subcarriers in a first symbol period at a destination node; code for causing the at least one computer to obtain second received symbols from the plurality of subcarriers in a second symbol period at the destination node, wherein the first and second received symbols comprise modulation symbols transmitted on the plurality of subcarriers by a source node and output symbols transmitted on the plurality of subcarriers by a relay; and code for causing the at least one computer to process the first and second received symbols to recover data sent in the modulation symbols by the source node.
Specification