| 摘要 |
FIELD: radio engineering, communication.SUBSTANCE: invention relates to communication engineering and can be used in wireless communication systems. A terminal device allows constraints on user allocation to be prevented and spread codes to be allocated in a scheduler when non-adaptive HARQ is employed using a PHICH. A codeword generator (103) generates code words (CW) by encoding data, a layer mapping section (108) places each CW in one or a plurality of layers, a DMRS generator (110) generates a reference signal for each layer in which a CW is placed by using any resource from a plurality of resources defined by a mutually orthogonal plurality of OCC, and an ACK/NACK demodulator (102) receives a response signal indicating a retransmission request. When a response signal requesting retransmission of only a CW placed in a plurality of layers is received, the DMRS generator (110) uses each resource having the same OCC from the plurality of resources for the reference signals generated in the corresponding layers.EFFECT: high transmission throughput.20 cl, 10 dwg |
