| 摘要 |
Disclosed are a transmission device and a transmission method for a data frame, which relate to the field of communications, save signalling overheads, and reduce a time delay in the reception of a data part. The specific solution is: an acquisition unit acquiring LTF parameters and acquiring a starting location I of an allocated sub-carrier, wherein the LTF parameters comprise: a frequency domain transformation parameter and a time domain transformation parameter needed for generating an LTF sequence; according to the frequency domain transformation parameter and the starting location I, a frequency domain transformation unit performing frequency domain transformation on an LTF basic sequence to obtain an LTF symbol; according to the time domain transformation parameter, a time domain transformation unit performing time domain transformation on the LTF symbol to obtain the LTF sequence; and a sending unit carrying the LTF sequence in a first data frame and sending same to a second device, so that the second device determines the LTF basic sequence according to the LTF sequence and performs channel estimation according to the LTF basic sequence. The present invention is used in a transmission process of a data frame. |
