Transmission diversity scheme on physical uplink control channel (PUCCH) with ACK/NACK differentiation

A method for transmitting uplink control information (UCI) using a physical uplink control channel (PUCCH) transmit diversity scheme, comprising:

• coding UCI with a Forward Error Correction code to obtain a coded UCI;
• mapping coded UCI to quadrature phase shift keying (QPSK) symbols to obtain a mapped coded UCI;
• selecting a phase shift pattern, wherein the phase shift pattern comprises multiple phase shifts for a plurality of symbols based on an acknowledge/negative-acknowledge (ACK/NACK);
• applying a phase shift from the phase shift pattern to the mapped coded UCI to obtain a phase shifted mapped coded UCI;
• sending the mapped coded UCI using a PUCCH resource on a first antenna;
• and
• sending the phase shifted mapped coded UCI using a PUCCH resource on a second antenna.