A communication system includes a repetitive orthogonal frequency-division multiplexing (“ROFDM”)transmitter communicating with an ROFDM receiver. The ROFDM transmitter includes an ROFDM modulator, which includes a K-point Fast Fourier Transform receiving a block of time-domain data symbols and generating an initial orthogonal frequency-division multiplexing symbol. The initial orthogonal frequency-division multiplexing symbol is based on a block of frequency-domain data symbols corresponding to the block of time-domain data symbols. The initial orthogonal frequency-division multiplexing symbol includes an ending part. The ROFDM modulator includes an orthogonal frequency-division multiplexing symbol repeater generating a repetitive orthogonal frequency-division multiplexing symbol by repeatedly reproducing the initial orthogonal frequency-division multiplexing symbol. The modulator includes a cyclic prefix adder pretending a cyclic prefix to the repetitive orthogonal frequency-division multiplexing symbol to generate a baseband transmitted signal. The cyclic prefix includes the ending part of the initial orthogonal frequency-division multiplexing symbol. The ROFDM receiver includes an ROFDM demodulator.

The intelligent measurement and control communication network at least includes at least one management node and at least one common node. The whole intelligent measurement and control communication network is logically divided into a control plane and a service plane. The control plane selects a routing strategy with the shortest path to cause each management node on the control plane to communicate with all common nodes. The service plane is divided into multiple task subnets according to tasks performed by each node, and each task subnet may select different routing strategies according to task requirements of this task subnet. According to the application and scenario needs of the tasks, the control plane combines externally changed parameters and utilizes machine learning to generate a new mathematical model in real time and sends a new task instruction to the service plane.

A transmission method for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. Each signal has been modulated according to a different modulation scheme. The transmission method applies precoding on both signals using a fixed precoding matrix, applies different power change to each signal, and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.

A method for transmitting data carrying optical information over an optical channel, comprising the steps of providing an optical transmitter consisting of a light source being a Mode-Locked Optical Frequency Comb (MLFC) for generating a frequency comb of multiple carriers, each of which being modulated by a baseband signal; an optical modulator for modulating each and all of the multiple carriers in a modulation bandwidth extending up to the modes' frequency spacing between the multiple carriers; performing all-optical encoding of the modulated carriers by manipulating the optical amplitude and/or phase and/or polarization of all optically modulated carriers; and transmitting, by the optical transmitter, the encoded modulated carriers to an optical receiver, over an optical channel.

Embodiments of the present disclosure provide methods for transmitting an uplink signal and a downlink signal. A method for transmitting an uplink signal comprises detecting whether there is a beam failure; if there is a beam failure, determining at least one of whether there is a candidate downlink transmission beam(s) or candidate downlink transmission beam information; and transmitting a beam failure recovery request message to a base station, the beam failure recovery request message being used for informing the base station of at least one of whether there is a candidate downlink transmission beam(s) or candidate downlink transmission beam information. A method for transmitting a downlink signal comprises detecting a beam failure recovery request message, determining at least one of whether there is a candidate downlink transmission beam(s) or candidate downlink transmission beam information in the UE; and transmitting a feedback message corresponding to the beam failure recovery request message.

This document discloses a solution for performing anti-jamming procedures. According to an aspect, a method for a terminal device comprises: receiving a first reference signal allocation from an access node, wherein the first reference signal is unique to the terminal device in a cell managed by the access node; receiving a second reference signal allocation from the access node, wherein the second reference signal is shared with at least one other terminal device in the cell; causing transmission of payload data together with the first reference signal according to a regular transmission pattern; and breaking the regular transmission pattern by transmitting dummy data together with the second reference signal in a time-frequency resource shared with the at least one other terminal device.

The disclosure provides a method and a device for multi-antenna transmission in a base station and a User Equipment (UE). The UE, in turn, receives a first higher-layer signaling, monitors a first-type physical layer signaling in a first radio resource pool, and receives second downlink information in a second radio resource pool. The first higher-layer signaling is used for determining first information and second information, and the first information is used for multi-antenna related receiving in the first radio resource pool. The first-type physical layer signaling is detected, and the first-type physical layer signaling is used for multi-antenna related receiving in the second radio resource pool, or, the first-type physical layer signaling is not detected, and the second information is used for multi-antenna related receiving in the second radio resource pool. The second radio resource pool is related to the first radio resource pool.

A method, a computer-readable medium, and an apparatus are provided that enable use of a full transmission power for a UE having a first set of coherent antenna ports that is non-coherent to a second set of coherent antenna ports. The apparatus determines a transmission power for a data transmission from the UE to a base station based at least in part on power control signaling from the base station, determines at least one antenna port having non-zero data for transmission, and determines a transmission power split for the at least one antenna port. Then, the apparatus transmits the data transmission from the at least one antenna port, wherein a combined transmission power from the at least one antenna port corresponds to the transmission power determined based at least in part on the power control signaled from the base station.

An operating method of an electronic device including a plurality of panel antennas and storing information about a plurality of codebooks includes: determining at least one panel antenna among the plurality of panel antennas based on environmental information; receiving control information from a base station; and selecting an optimal codebook among the plurality of codebooks based on the determined at least one panel antenna and the received control information.

This document discloses a solution for performing anti-jamming procedures. According to an aspect, a method for a terminal device comprises: receiving a first reference signal allocation from an access node, wherein the first reference signal is unique to the terminal device in a cell managed by the access node; receiving a second reference signal allocation from the access node, wherein the second reference signal is shared with at least one other terminal device in the cell; causing transmission of payload data together with the first reference signal according to a regular transmission pattern; and breaking the regular transmission pattern by transmitting dummy data together with the second reference signal in a time-frequency resource shared with the at least one other terminal device.