Abstract:
A transmission line includes an outer housing, an outer conductor, a support plate, and an inner conductor. The outer housing may include a first housing and a second housing that are fastened to each other. The first housing has a first groove, the second housing has a second groove, and the first groove and the second groove are enclosed to form a path. The outer conductor may include a first conducting layer and a second conducting layer. The first conducting layer is located on an inner wall of the first groove, and the second conducting layer is located on an inner wall of the second groove. The support plate is suspended in the path, and at least a part of an edge of the support plate is fastened between the first housing and the second housing.
Abstract:
A method for transmission and reception in parallel on dual channels includes, when detecting that a first channel is occupied by CSMA contention, determining, by an AP, first transmission duration of a first channel data packet. The method additionally includes determining, by means of CCA detection, that a second channel is idle, where the second channel is used to transmit a second channel data packet whose transmission direction is opposite to a transmission direction of the first channel. The method additionally includes determining, by using the first transmission duration, second transmission duration for transmitting the second channel data packet, and transmitting the second channel data packet according to the second transmission duration, where an end time of transmission of the second channel data is not later than an end time of transmission of the first channel data.
Abstract:
Embodiments of the present application provide a signal processing method and apparatus, and a device. The embodiments relate to an MU-MIMO system. The signal processing apparatus includes: a signal obtaining module and a sending module. A signal includes N spatial flows, and the signal includes a training field, where the training field includes a first part and a second part. Sub-carriers of an OFDM symbol in the second part of the training field are divided into N training sub-carrier sets TSSs in a division manner that is the same as a division manner of sub-carriers of an OFDM symbol in the first part of the training field, and each spatial flow corresponds to at least one sub-carrier in a TSS, in each frequency domain location, of each OFDM symbol in the second part of the training field. So that precision of the channel estimation is improved.
Abstract:
A method for interference cancellation is provided. The method includes: determining, by a first base station, a channel parameter from a transmit antenna of a second base station to a receive antenna of the first base station; receiving, by the first base station, a first signal using a first resource, where the first signal includes: a first interference signal and an uplink wanted signal, and the first interference signal is an interference signal generated when a downlink second signal is sent by the second base station by using the first resource; receiving, by the first base station, reconstruction information that is of the second signal and that is sent by the second base station; and determining, by the first base station, the first interference signal in the first signal according to the channel parameter and the reconstruction information of the second signal, and canceling the first interference signal.
Abstract:
The embodiments of present disclosure provide a method for estimating a response of a baseband self-interference channel and an apparatus, where the method includes: estimating a response of a baseband self-interference channel to obtain a first estimation response of the baseband self-interference channel; starting to perform first full duplex communication; canceling baseband self-interference in a first baseband received signal according to the first estimation response, where the first baseband received signal is a baseband signal received during the first full duplex communication; determining a first parameter of the baseband self-interference channel; determining an estimation policy of the baseband self-interference channel according to the first parameter; and estimating the response of the baseband self-interference channel according to the estimation policy.
Abstract:
Embodiments of the present invention provide an apparatus for self-interference cancellation. The apparatus includes: a first splitter, configured to perform splitting processing on a local oscillator signal generated by a local oscillator to separately transmit the local oscillator signal to an up-converter and a delayer; the up-converter, configured to perform up-conversion processing on a baseband transmit signal according to the local oscillator signal to generate a transmit signal; the delayer, configured to perform delaying processing on the local oscillator signal according to a preset target delay; a first down-converter, configured to perform, based on the local oscillator signal obtained after the delaying processing, down-conversion processing on a receive signal to acquire a baseband receive signal, and transmit the baseband receive signal to a self-interference canceller; and the self-interference canceller, configured to perform self-interference cancellation processing on the baseband receive signal.
Abstract:
A method for transmission and reception in parallel on dual channels includes, when detecting that a first channel is occupied by CSMA contention, determining, by an AP, first transmission duration of a first channel data packet; determining, by means of CCA detection, that a second channel is idle, where the second channel is used to transmit a second channel data packet whose transmission direction is opposite to a transmission direction of the first channel; determining, using the first transmission duration, second transmission duration for transmitting the second channel data packet, and transmitting the second channel data packet according to the second transmission duration, where an end time of transmission of the second channel data is not later than an end time of transmission of the first channel data.
Abstract:
An information transmission method and apparatus, the method including determining, by a first communications apparatus, an area in which a terminal device is located, where the area includes overlapping coverage area between the first communications apparatus and at least one second communications apparatus, and, non-overlapping coverage area between the first communications apparatus and the at least one second communications apparatus, and the first communications apparatus is adjacent to the at least one second communications apparatus, and sending, by the first communications apparatus, information to the terminal device through a first channel if the terminal device is located in the overlapping coverage area, and sending, by the first communications apparatus, information to the terminal device through a second channel if the terminal device is located in the non-overlapping coverage areas.
Abstract:
This application provides a multichannel-based signal transmission method and apparatus. The method includes: combining N groups of lower-order modulation symbols into N groups of higher-order modulation symbols, where an ith higher-order modulation symbol in each group of higher-order modulation symbols is obtained by combining ith lower-order modulation symbols in all the N groups of lower-order modulation symbols, each group of lower-order modulation symbols includes M lower-order modulation symbols, i=1, 2, . . . , M, N is a positive integer greater than 1, and M is a positive integer greater than 1; determining N to-be-sent signals based on the N groups of higher-order modulation symbols; and sending a kth to-be-sent signal in the N to-be-sent signals by using a kth channel in N channels, where k=1, 2, . . . , N.
Abstract:
Embodiments of the present invention provide a wireless communication method, device, and system, which relate to the field of communications technologies, and can resolve a problem of low carrier utilization in a wireless communications system. In the method, a wireless access device communicates with user equipment on a first carrier by using at least three timeslots, where the at least three timeslots include at least one full-duplex timeslot, at least one downlink timeslot, and at least one uplink timeslot; the wireless access device performs one or more of signal sending or signal reception in the full-duplex timeslot; the wireless access device sends a downlink signal in the downlink timeslot; and the wireless access device receives an uplink signal in the uplink timeslot. The embodiments of the present invention are used for wireless communication.