Transmitting digital signal
First Claim
Patent Images
1. A method comprising:
- reading at least two complex symbols belonging to a transmission block in a transmitter;
forming, by a processor, channel symbols from the symbols belonging to the transmission block based on a non-orthogonal block code, wherein the forming comprises multiplying at least one of the symbols belonging to the transmission block by a first nonzero weighting coefficient and at least one other symbol belonging to the transmission block by a second nonzero weighting coefficient, wherein the division ratio of the first and second weighting coefficients differs from values ±
1 and ±
j; and
providing the formed channel symbols for transmission via two or more transmission antenna routes.
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Abstract
An arrangement for coding digital symbols and transmitting them through at least two antennas. A coder reads at least two symbols belonging to the same transmission block and forms channel symbols of the symbols of the transmission block by means of a block code. The coder multiplies at least one symbol belonging to the transmission block by a first nonzero weighting coefficient and at least one symbol belonging to the transmission block by a second nonzero weighting coefficient, and the division ratio of the first and second weighting coefficients differs from values ±1, ±j and ±1/sqrt(2). The thus formed channel symbols are transmitted to the radio path through the antennas.
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Citations
48 Claims
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1. A method comprising:
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reading at least two complex symbols belonging to a transmission block in a transmitter; forming, by a processor, channel symbols from the symbols belonging to the transmission block based on a non-orthogonal block code, wherein the forming comprises multiplying at least one of the symbols belonging to the transmission block by a first nonzero weighting coefficient and at least one other symbol belonging to the transmission block by a second nonzero weighting coefficient, wherein the division ratio of the first and second weighting coefficients differs from values ±
1 and ±
j; andproviding the formed channel symbols for transmission via two or more transmission antenna routes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An apparatus, comprising:
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a coder configured to code digital symbols into channel symbols, wherein the coder is configured to; read at least two complex symbols belonging to the same transmission block and, by use of a non-orthogonal block code defining the coding; and form channel symbols of the symbols belonging to the transmission block by multiplying at least one symbol belonging to the transmission block by a first nonzero weighting coefficient and at least one other symbol belonging to the transmission block by a second nonzero weighting coefficient, wherein a division ratio of the first and second weighting coefficients differs from values ±
1 and ±
j; anda transceiver operationally connected to the coder and configured to transmit the channel symbols to provide the formed channel symbols for transmission via two or more transmission antenna routes generated by means of one or more antennas. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. An apparatus comprising:
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reading means for reading at least two complex symbols belonging to the same transmission block in the transmitter; forming means for forming channel symbols from the symbols belonging to the transmission block based on a non-orthogonal block code by multiplying at least one symbol belonging to the transmission block by a first nonzero weighting coefficient and at least one other symbol belonging to the transmission block by a second nonzero weighting coefficient;
wherein a division ratio of the first and second weighting coefficients differs from values ±
1 and ±
j; andproviding means for providing the formed channel symbols for transmission via two or more antenna routes.
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Specification