| 摘要 |
An OFDM communication system and a method and a device for receiving and transmitting signals. The method for transmitting signals includes that: M transmitting antennas are grouped to enable all groups of transmitting antennas to correspondingly form U transmitting ports, without correlation between antennas of different groups, M being greater than or equal to U; P data streams are formed in multiple input multiple output mode, wherein P=U/2, and P is less than or equal to the number of receiving ports; Two modulation symbols in each data stream, namely 2P modulation symbols in total, as a group are mapped to a resource element pair to form SFBC coding relationship, and are transmitted by the formed U transmitting ports. The method for receiving signals includes that: Q receiving antennas are divided into S groups without correlation between antennas of different groups, antennas of each group corresponding to a receiving port, Q and S being greater than or equal to 2; The signals transmitted with the signal transmitting method are respectively received by each receiving port, and the modulated symbols of each data stream mapped to the resource element pair are separated. The technical solution can improve data transmission performance. |
