Blind method of equalizing signals in filter bank multi-carrier communications

A filter bank multi-carrier with offset quadrature amplitude modulation (FBMC-OQAM) transmission system that includes a transmitter side and a receiver side disposed on opposite sides of a wireless communication channel and that performs blind equalization, comprising:

• processing circuitry configured to
• obtain a first matrix W, which is a matrix of weights to be applied to an equalizer provided in the receiver side of the FBMC-OQAM transmission system, by dividing a second matrix V by a receiver waveform matrix G, wherein the second matrix V is obtained by calculating a total objective function J until the total objective function J is either constant or below a threshold error margin, the calculation of the total objective function J including iterating calculations with a plurality of combinations of a frequency bin p and a time slot q;
• apply the weights of the obtained first matrix W to the equalizer;
• and
• process a received signal in the equalizer using the applied weights, the received signal being a signal that is received at the receiver side of the FBMC-OQAM transmission system based on a signal that is transmitted over the wireless communication channel from the transmitter side,
• wherein the weights of the obtained first matrix W are configured to minimize a total outage probability Pout,TOTAL with regard to received signals received after the weights are applied to the equalizer, which the total outage probability Pout,TOTAL is a probabality that data will not be received over the wireless communication channel for a time-frequency batch of symbols.

A non-transitory computer readable medium that stores a program that when executed by processing circuitry of a filter bank multi-carrier with offset quadrature amplitude modulation (FBMC-OQAM) transmission system, that includes a transmitter side and a receiver side disposed on opposite sides of a wireless communication channel and that performs blind equalization, causes the processing circuitry to perform a method including:

• obtaining a first matrix W, which is a matrix of weights to be applied to an equalizer provided in the receiver side of the FBMC-OQAM transmission system, by dividing a second matrix V by a receiver waveform matrix G, wherein the second matrix V is obtained by calculating a total objective function J until the total objective function J is either constant or below a threshold error margin, the calculation of the total objective function J including iterating calculations with a plurality of combinations of a frequency bin p and a time slot q;
• applying the weights of the obtained first matrix W to the equalizer;
• and
• processing a received signal in the equalizer using the applied weights, the received signal being a signal that is received at the receiver side of the FBMC-OQAM transmission system based on a signal that is transmitted over the wireless communication channel from the transmitter side,
• wherein the weights of the obtained first matrix W are configured to minimize a total outage probability Pout,TOTAL with regard to received signals received after the weights are applied to the equalizer, which the total outage probability Pout,TOTAL is a probabality that data will not be received over the wireless communication channel for a time-frequency batch of symbols.