Patent ID: 8385453
Filing Date: 2013-02-26
Classification: H04B,H04L

Abstract:
1. A data processing method for downlink transmit diversity, comprising: sequencing and grouping data symbols in a first data symbol sequence output by a modulator to obtain a second data symbol sequence, wherein the second data symbol sequence includes a third data symbol sequence, which is constructed by data symbol groups and in each of the data symbol groups, a first type data symbol and a second type data symbol are arranged in intervals and the first type data symbol have higher importance than the second type data symbol; determining a first antenna port pairing mode corresponding to a current slot according to a distribution of a reference signal at the first antenna port in the current slot; performing, for Orthogonal Frequency Division Multiplex symbols including the reference signal in the current slot by utilizing a frequency switching diversity technology, an antenna port and subcarrier mapping on symbols in a transmit diversity matrix corresponding to the data symbol groups according to the first antenna port pairing mode, wherein among two symbols mapped to a same antenna port, a subcarrier in which a symbol related to the first type data symbol is located is nearer to a subcarrier in which a reference signal at the same antenna port is located; and performing an inverse fast fourier transform and a cyclic prefix insertion processing on symbols mapped to subcarriers and then mapping the time domain symbols to a physical antenna for transmission.