SUB-CARRIER ALLOCATION METHOD, RESOURCE MAPPING DEVICE AND DATA TRANSMISSION METHOD AND DEVICE

摘要

A sub-carrier allocation method, resource mapping device and data transmission method and device are disclosed. Said data transmission method includes: performing channel encoding and modulation on user data to obtain symbol data stream; dividing said symbol data stream into data symbol blocks; modulating and mapping said data symbol block to generate unit block; performing weighing repetition on said unit block to obtain repeated block; mapping said repeated block to discrete sub-carrier bands; performing the frequency-time transform on said mapped data to obtain the signals of time domain; sending said signals of time domain. A corresponding sub-carrier allocation method, resource mapping device and data transmission device are also provided.