The method of mapping the stream flows empty space, apparatus and data transmission method, apparatus

The present invention provides a method of spatial flow stream mapped space-time, the method of flow mapping includes apparatus and data transmission method, apparatus, space flows empty: The network of the space-time coding indication bit determines whether to use space-time coding; when the determination result is that the M orthogonal to the n-th spatial stream carried by frequency division multiplexing OFDM symbols are mapped onto the OFDM symbol 2n-1 space-time streams and streams carried 2n space-time, where, n = 1,2, ......, N, N is the total number of spatial streams in the network, M is the number of OFDM symbols carried by each spatial stream, and M is an even number greater than zero. According to the present invention can improve system performance.