摘要:
Disclosed is a method for transmitting a sounding reference signal from a mobile terminal that includes plural antennas. Different plural sounding reference signal sequences that have mutual orthogonality are mapped to each antenna, and then transmitted. Or, the same sounding reference signal sequence is mapped to the plural antennas after precoding or cyclic delay diversity processing, and then transmitted.
摘要:
Disclosed is a method for transmitting a sounding reference signal from a mobile terminal that includes plural antennas. Different plural sounding reference signal sequences that have mutual orthogonality are mapped to each antenna, and then transmitted. Or, the same sounding reference signal sequence is mapped to the plural antennas after precoding or cyclic delay diversity processing, and then transmitted.
摘要:
The present invention provides a data transmission device and method in a wireless communication system. The device comprises a processor which is connected with the M antennas and which is formed so as to generate data to be transmitted through the M antennas, on the basis of a precoding matrix; the precoding matrix is generated based on a plurality of matrices; and a first matrix, which is one matrix among the plurality of matrices, is selected from within a codebook for N antennas (where N
摘要:
The present invention provides a data transmission device and method in a wireless communication system. The device comprises a processor which is connected with the M antennas and which is formed so as to generate data to be transmitted through the M antennas, on the basis of a precoding matrix; the precoding matrix is generated based on a plurality of matrices; and a first matrix, which is one matrix among the plurality of matrices, is selected from within a codebook for N antennas (where N
摘要:
Disclosed is a method for transmitting a CoMP reference signal for accurate channel estimation. The CoMP reference signal is a cell-specific reference signal or a CoMP-zone-specific reference signal. A method for transmitting the cell-specific reference signal uses a CoMP set ID or does not apply a frequency shift value, or uses a serving cell ID or a frequency shift value of the serving cell. The cell-specific reference signal is transmitted using a preset resource region. A method for transmitting the CoMP-zone-specific reference signal is configured such that the pattern of the sequence of CoMP reference signals varies in each of the CoMP zones, and the pattern can be set in advance. The reference signal is multiplexed using an orthogonal code and transmitted to plural terminals using the same CoMP zone.
摘要:
A method for transmitting a reference signal in a multi-antenna system is provided. The method includes: selecting at least one orthogonal frequency division multiplexing (OFDM) symbol in a subframe containing a plurality of OFDM symbols; allocating a channel quality indication reference signal (CQI RS) capable of measuring a channel state for each of a plurality of antennas to the selected at least one OFDM symbol; and transmitting the CQI RS, wherein the CQI RS is allocated to an OFDM symbol which does not overlap with an OFDM symbol to which a common reference signal to be transmitted to all user equipments in a cell or a dedicated reference signal to be transmitted to a specific user equipment in the cell is allocated.
摘要:
A method for transmitting a pilot signal in a downlink MIMO (Multi Input Multi Output) supporting multiple transmission antenna is disclosed. The method includes transmitting a subframe to which cell-specific pilot symbols and User Equipment-specific (UE-specific) pilot symbols are mapped, in which the cell-specific pilot symbols are mapped to a first region of the subframe and the UE-specific pilot symbols are mapped to a second region of the subframe.
摘要:
The present invention relates to a method for transmitting a pilot signal in a downlink MIMO (Multi Input Multi Output) system that supports a first UE (User Equipment) supporting N number of transmission antennae out of a total of M transmission antennae and supports a second UE supporting said M (M>N) number of transmission antennae. Said method comprises a step wherein a pilot symbol is placed as an image in the resource block (RB) region on a subframe that enables the transmission of a user-specific pilot symbol to said second UE in a base station; and a step wherein the subframe whereon said pilot symbol has been placed as an image is transmitted, wherein said RB region includes a first region and a second region, and the first region and the second region each include a certain number of continuous OFDM symbols on a respective time axis, and on said first region is placed as an image a cell-specific pilot symbol with respect to the transmission antenna ports 0 to N−1 that can recognize both said first UE and said second UE, and on said second region is placed as an image a user-specific pilot symbol with respect to the transmission antenna ports 0 to M that can recognize said UE only.
摘要:
A method and an apparatus for transmitting data in a multi-antenna system are provided. The method includes: selecting a plurality of modulation symbol blocks including at least one modulation symbol from total modulation symbols of a codeword, repeating the plurality of modulation symbol blocks in a time domain, combining the repeated plurality of modulation symbol blocks, and performing discrete Fourier transform (DFT) on the combined plurality of modulation symbol blocks.
摘要:
A user equipment in wireless communication system is provided. The user equipment includes an antenna unit including a plurality of antennas, a control unit for grouping the plurality of antennas into a predetermined number of antenna groups and controlling separately transmission power of each of the predetermined number of antenna groups, and a transmitting unit, connected to the control unit, for transmitting at least one of data and control information to a base station via at least one of the predetermined number of antenna groups.