Method for multisite transmission using complementary codes
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorAli S. Khayrallah
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Abstract
A method of a transmitter enables multi-site wireless transmission using complementary channel coding. The method includes receiving a message to be transmitted to a receiver, encoding the message as a first codeword using a shared mother code, parsing the first codeword into a first complementary codeword of a set of complementary codewords specific to the first codeword, determining a set of shared channel resources and a configuration of the transmitter to be utilized to transmit the first complementary codeword, and transmitting the first complementary codeword to the receiver.
Claims10
A method of a receiver to enable multi-site wireless transmission using complementary channel coding, the method comprising:
- receiving a signal that is a combination of at least a first transmitted signal from a first transmitter and a second transmitted signal from a second transmitter;
- processing the signal to produce a first symbol set and a first set of soft values corresponding to the first transmitted signal;
- processing the signal to produce a second symbol set and a second set of soft values corresponding to the second transmitted signal;
- combining the first set of soft values and the second set of soft values to generate a codeword;
- decoding the codeword with a mother code to generate a message;
- transforming a representation of the signal into a transmit domain by using a matrix transformation that represents a left inverse of a channel from the first transmitter, which incorporates the channel from the first transmitter and a first noise covariance including an effect of the second transmitted signal;
- and
- transforming a representation of the signal into a transmit domain by using a matrix transformation that represents a left inverse of a channel from the second transmitter, which incorporates the channel from the second transmitter and a second noise covariance including an effect of the first transmitted signal.
An electronic device to implement a method to enable multi-site wireless transmission using complementary channel coding, the electronic device comprising:
- a receiver to receive a signal that is a combination of at least a first transmitted signal from a first transmitter and a second transmitted signal from a second transmitter, to process the signal to produce a first symbol set and a first set of soft values corresponding to the first transmitted signal, and to process the signal to produce a second symbol set and a second set of soft values corresponding to the second transmitted signal;
- and
- a demodulator coupled to the receiver to combine the first set of soft values and the second set of soft values to generate a codeword, and to decode the codeword with a mother code to generate a message, the demodulator further to transform a representation of the signal into a transmit domain by using a matrix transformation that represents a left inverse of a channel from the first transmitter, which incorporates the channel from the first transmitter and a first noise covariance including an effect of the second transmitted signal, and to transform a representation of the signal into a transmit domain by using a matrix transformation that represents a left inverse of a channel from the second transmitter, which incorporates the channel from the second transmitter and a second noise covariance including an effect of the first transmitted signal.
Dependencies are inferred from the claim text.