Wireless communication method and wireless communication device

1. An electronic device for a first communication device in a wireless communication system, comprising:

a storage device configured to store an analog codebook for the first communication device, the analog codebook comprising a plurality of sets of first configuration parameters for a set of phase shifters of the first communication device; and

a processing circuit configured to:

perform channel estimation on a first channel from a second communication device to the first communication device respectively based on the plurality of sets of first configuration parameters and signal transmission from the second communication device,

select from the plurality of sets of first configuration parameters of the analog codebook a particular set of first configuration parameters corresponding to respective channel estimation results that satisfy a first predetermined condition so as to generate a reduced analog sub-codebook,

configure signal transmission from the first communication device to the second communication device based on the analog sub-codebook, to perform channel estimation on a second channel from the first communication device to the second communication device.

2. The electronic device according to claim 1 , wherein each set of the plurality of sets of first configuration parameters corresponds to a weight vector, and each weight vector is used to configure phase values for phase shifters of the set of phase shifters.

3. The electronic device according to claim 1 , wherein the processing circuit is further configured to: correct the reduced analog sub-codebook based on a signal transmission frequency between the first communication device and the second communication device to obtain a corrected analog sub-codebook, and configure signal transmission from the first communication device to the second communication device by using the corrected analog sub-codebook.

4. The electronic device according to claim 1 , wherein the processing circuit is further configured to determine one set of the plurality of sets of first configuration parameters for configuring signal transmission through the second channel based on feedback of the channel estimation results of the second channel provided by the second communication device, wherein the feedback of the channel estimation results includes a channel estimation result corresponding to one set of the plurality sets of first configuration parameters which corresponds to an optimal channel estimation result.

5. The electronic device according to claim 1 , wherein the wireless communication system is a frequency division duplex communication system.

6. The electronic device according to claim 1 , wherein the first predetermined condition is a first predetermined number of channel qualities which have optimal channel qualities in the channel estimation results.

7. The electronic device according to claim 1 , wherein the signal transmission includes a pilot signal.

8. The electronic device according to claim 4 , wherein the electronic device operates as the first communication device, and the first communication device further comprises the set of phase shifters, a radio frequency link, and a plurality of antennas, wherein the set of phase shifters are disposed between the radio frequency link and the plurality of antennas, wherein the processing circuit of the electronic device configures phases of the set of the phase shifters based on the analog sub-codebook, and uses the plurality of antennas to transmit signal to the second communication device.

9. The electronic device according to claim 8 , wherein the first communication device is a base station, the first channel corresponds to an uplink channel, and the second channel corresponds to a downlink channel.

10. The electronic device according to claim 8 , wherein the first communication device is a user equipment, the first channel corresponds to a downlink channel, and the second channel corresponds to an uplink channel.

11. The electronic device according to claim 9 , wherein the processing circuit is further configured to, before performing estimation on the channel quality of the first channel from the second communication device to the first communication device, generate a control message for configuring signal transmission from the second communication device to the first communication device, the control message including control parameters for the signal transmission.

12. The electronic device according to claim 9 , further comprising a plurality of radio frequency links, wherein each of the radio frequency links is coupled to a set of phase shifters, the first communication device further comprises a digital precoder coupled to the plurality of radio frequency links, the processing circuit is further configured to generate a digital precoding matrix based on feedback of channel quality estimation results of the channel estimation results from a plurality of the second communication devices, to enable the digital precoder to perform digital precoding of data signals for the plurality of second communication devices.