Terminal apparatus and base station apparatus

A terminal apparatus that transmits a data signal to a base station apparatus, the terminal apparatus comprising:

• a transmission parameter configuration unit configured to generate a sequence including a zero and to transmit the data signal;
• a spread unit configured to multiply a modulation symbol of the data signal by the sequence;
• and
• a mapping unit configured to map the data signal multiplied by the sequence to a first radio resource area or a second radio resource area each including multiple resource elements, wherein
• the transmission parameter configuration unit causes the sequence by which the modulation symbol mapped to the first radio resource area is multiplied and the sequence by which the modulation symbol mapped to the second radio resource area is multiplied to be differently configured depending on whether the transmission of the data signal is an initial transmission or a retransmission.