An on-vehicle transmission system includes: an antenna-side circuit unit including a plurality of wireless circuits connected in series and configured to receive radio signals in frequency bands different from each other, the antenna-side circuit unit configured to combine the radio signals received by the respective wireless circuits and output a resultant radio signal; and a path part configured to transmit the radio signal resulting from the combination and received from the antenna-side circuit unit, to an on-vehicle device side mounted on the vehicle, wherein, in the antenna-side circuit unit, each wireless circuit is connected according to an order determined for each wireless circuit.

A vehicle capable of providing diversity of DSRC communication using a DSRC antenna for the DSRC communication and a WiFi antenna for WiFi communication is disclosed. The vehicle includes a first antenna configured to receive a first signal; a second antenna configured to receive a second signal; and a controller configured to synthesize the first signal and the second signal and process a signal in which the first signal and the second signal are synthesized according to a first communication method, in a first mode, and to alternately perform processing of a synthesized signal, in which the first signal and the second signal are synthesized, according to the first communication method and processing of the second signal according to a second communication method, in a second mode.

In an embodiment, an apparatus includes a first plurality of digital beamformers associated with a first channel, the first plurality of digital beamformers configured to encode each data beam of a first plurality of data beams of the first channel to generate an encoded first plurality of data beams; a second plurality of digital beamformers associated with a second channel different from the first channel, the second plurality of digital beamformers configured to encode each data beam of a second plurality of data beams of the second channel to generate an encoded second plurality of data beams; and a channel combiner, electrically coupled to the first and second plurality of digital beamformers, and configured to generate a combined channel comprising an aggregation of at least a portion of the encoded first plurality of data beams and at least a portion of the encoded second plurality of data beams.

A first OFDM frame signal includes a grid of multiple frequency subcarriers and multiple time periods.—An OFDM symbol is transmitted using multiple frequency subcarriers during a time period and includes known reference OFDM symbols assigned to corresponding time-frequency resource elements in the grid. —Each resource element is defined by a one of the multiple frequency subcarriers and one of the multiple time periods. —A second OFDM frame signal is also generated, but the resource elements assigned to the known reference OFDM symbols are different from the time-frequency resource elements in the grid assigned to the known reference OFDM symbols in the first OFDM frame signal. The first and second OFDM frame signals are converted to a first and second radio signals. The first radio signal is transmitted from a first antenna and the second radio signal from a second, different antenna.

A method for downlink signal transmission includes that: when downlink signals or transmission configuration indicator (TCI) states respectively associated with two downlink signals to be transmitted satisfy a preset condition, a terminal receives the two downlink signals on a same time-domain resource. A terminal is also provided for implementing the above method for downlink signal transmission.

A network node in a wireless communication network generates configuration information that configures an extent to which a wireless communication device autonomously adapts a number of different receiver components that the wireless communication device uses under different conditions at the wireless communication device, subject to minimum receiver component requirements respectively specified for the different conditions. In some examples, the different conditions may be associated with correlation of propagation channels received at the wireless communication device. The network node transmits the configuration information to the device. Correspondingly, the device autonomously adapts the number of different receiver components that the wireless communication device uses in accordance with the configuration information.

There is provided mechanisms for processing uplink signals. A method is performed by a RRU (200). The method comprises obtaining uplink signals (S102) as received from wireless devices at antenna elements of an antenna array of the RRU (200), each wireless device being associated with its own at least one user layer. The method comprises capturing (S104) energy per user layer by combining the received uplink signals from the antenna array for each user layer into combined signals, resulting in one combined signal per user layer. The combining for each individual user layer is based on channel coefficients of the wireless device associated with said each individual user layer. The method comprises providing (S106) the combined signals to a BBU (300).

There is provided mechanisms for processing uplink signals. A method is performed by a RRU (200). The method comprises obtaining uplink signals (S102) as received from wireless devices at antenna elements of an antenna array of the RRU (200), each wireless device being associated with its own at least one user layer. The method comprises capturing (S104) energy per user layer by combining the received uplink signals from the antenna array for each user layer into combined signals, resulting in one combined signal per user layer. The combining for each individual user layer is based on channel coefficients of the wireless device associated with said each individual user layer. The method comprises providing (S106) the combined signals to a BBU (300).

With a receiver according to the present disclosure, a phase of the other modulated wave is adjusted so that a relative phase of the other modulated wave to a reference modulated wave is to be minimum and, then, a notch of the reference modulated wave is compensated with a frequency component of the other modulated wave. Thus, with the receiver according to the present disclosure, it is possible to prevent notches generated due to fading, and to improve a communication quality.

A radio-frequency integrated chip (RFIC) is described which provides a number of low noise amplifiers (LNAs) and load circuits. The low noise amplifiers are organized in groups. In some embodiments, a load circuit may be dedicated to a group or shared between groups. The RFIC includes an LNA group including a plurality of LNAs configured to amplify carrier signals related to a plurality of frequency bands, a second LNA group configured to amplify a plurality of second carrier signals, a first load circuit group dedicated to the first LNA group, a second load circuit group dedicated to the second LNA group, and a third load circuit group shared between the first LNA group and the second LNA group. In some embodiments the third load circuit group adaptively performs frequency down-conversion on a carrier signal amplified by at least one of the first LNA group and the second LNA group.