Information processing device, network node and information processing method

[0065] In Embodiment A, the precoding module may perform precoding processing on the N time-domain data streams through a precoding matrix to obtain effective parts of OFDM symbols that need to be transmitted on each antenna.

[0066] For example, if figure 2 As shown, in the figure 2 In , assuming that there are 3 data streams, by encoding and modulating the 3 data streams respectively, 3 frequency domain data streams are obtained, namely frequency domain data stream 1, frequency domain data stream 2 and frequency domain data stream 3, where frequency Domain data stream 1, frequency domain data stream 2 and frequency domain data stream 3 are carried on the same sub-band; IFFT sub-module 1, IFFT sub-module 2 and IFFT sub-module 3 respectively 2 and frequency domain data stream 3 are respectively subjected to IFFT processing; then, the time domain data stream obtained from frequency domain data stream 1, the time domain data stream obtained from frequency domain data stream ...

[0079] In embodiment B, N frequency-domain data streams and N time-domain data streams can be carried on S subbands, S is a positive integer greater than or equal to 2, and N is a positive integer greater than or equal to 2, wherein one frequency domain The data stream and the time domain data stream obtained based on the one frequency domain data stream are carried on one subband, which means that each subband in the S subbands carries different frequency domain data streams and Different time-domain data streams among the N time-domain data streams, for example, frequency-domain data stream 1, frequency-domain data stream 2, and time-domain data stream 1 and time-domain data stream based on frequency-domain data stream 1 and frequency-domain data stream 2 Data stream 2 is carried on subband 1, frequency domain data stream 3, frequency domain data stream 4, and time domain data stream 3 and time domain data stream 4 obtained based on frequency domain data stream 3 and frequenc...

[0113] In embodiment C, the N time-domain data streams can be precoded by using a precoding matrix to obtain the effective part of the OFDM symbol that needs to be sent on each antenna.

[0114] Specifically, the following will describe in detail in combination with specific embodiments. In this embodiment, it is assumed that the device has 500 antennas in total, and for a certain subframe, 8 data streams are transmitted in total. The OFDM system has a total of 500 subcarriers, uses the same precoding matrix P, and the length of the IFFT is 512. The device 100 can perform the following steps:

[0115] Step 1: Obtain the frequency domain data streams corresponding to the 8 data streams:

[0116] Perform independent coding and modulation on the 8 data streams to generate corresponding frequency domain data x n (k), wherein, n is the serial number of the stream number (n=1, 2, ..., 8), and k is the serial number of the data symbol of the frequency domain data stream (k = 1, 2....