摘要:
Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter is for use with NT transmit antennas and includes a precoder unit configured to precode data for transmission using a preceding matrix selected from a nested codebook, wherein the nested codebook provides codebooks corresponding to different transmission layers that are derived from column subsets of multiple NT×NT preceding matrices. The transmitter also includes a transmit unit configured to transmit the precoded data. In another embodiment, the receiver includes a receive unit configured to receive preceded data. The receiver also includes a precoder selection unit configured to select a preceding matrix from a nested codebook for the preceded data, wherein the nested codebook provides codebooks corresponding to different transmission layers that are derived from column subsets of multiple NT×NT preceding matrices.
摘要:
A method of feedback in wireless telephony includes a hybrid of implicit and explicit feedback. The implicit and explicit feedback are transmitted in distinct subframes. These distinct set of subframes may have the same periodicity but differing offsets. The distinct set of subframes may have periodicities related by an integral factor. Either set of subframes may include aperiodic subframes.
摘要:
An electronic device includes a first circuit (111) operable to generate a precoding matrix index (PMI) vector associated with a plurality of configured subbands, and further operable to form a compressed PMI vector from the PMI vector wherein the compressed PMI vector includes one reference PMI and at least one differential subband PMI defined relative to the reference PMI; and a second circuit (113) operable to initiate transmission of a signal communicating the compressed PMI vector. Other electronic devices, processes and systems are also disclosed.
摘要:
An electronic device includes a first circuit (111) operable to generate a precoding matrix index (PMI) vector associated with a plurality of configured subbands, and further operable to form a compressed PMI vector from said PMI vector wherein the compressed PMI vector includes one reference PMI and at least one differential subband PMI defined relative to the reference PMI; and a second circuit (113) operable to initiate transmission of a signal communicating the compressed PMI vector. Other electronic devices, processes and systems are also disclosed.
摘要:
Embodiments of the present disclosure provide a reporting allocation unit, an indicator interpretation unit and methods of operating a reporting allocation unit and an indicator interpretation unit. In one embodiment, the reporting allocation unit includes an indicator configuration module configured to provide reporting interval and offset values of corresponding rank and channel quality indicators for user equipment. The reporting allocation unit also includes a sending module configured to transmit the reporting interval and offset values to the user equipment.
摘要:
This application considers the need for enhancements to the baseline CSI reporting mechanisms including maximum payload size, CQI/PMI reporting configurations and CSI transmission in the event of collision between CSI reports from different CCs.
摘要:
This invention is codebook sub-sampling of the reporting of RI, CQI, W1 and W2. If CSI mode 1 is selected RI and W1 are jointly encoded using codebook sub-sampling in report 1. If CSI mode 2 is selected W1 and W2 are jointly encoded using codebook sub-sampling in report 2.
摘要:
A transmitter is for use with multiple transmit antennas and includes a precoder unit configured to precode data for a transmission using a precoding matrix selected from a codebook, wherein the codebook corresponds to the following three transmission properties for an uplink transmission: 1) all precoding elements from the precoding matrix have a same magnitude, 2) each precoding element from the precoding matrix is taken from a set of finite values and 3) there is only one non-zero element in any row of the precoding matrix. The transmitter also includes a transmit unit configured to transmit the precoded data.
摘要:
This invention is a method and an apparatus to up link transmission of data from a user equipment to a base station for single user multiple input, multiple output. This invention includes receiving at least one codeword, permuting the received codewords, precoding the permuted codewords and transmitting the predecoded codewords on plural antennas. The codewords may be permuted by layer permutation or by codeword permutation.
摘要:
In one embodiment, the transmitter is for use with a cellular communication network and includes an offset determination unit configured to select a shift parameter for a channel quality indication, wherein the shift parameter corresponds to an adjustment in an energy per resource element ratio for reporting the channel quality indication. The transmitter also includes a sending unit configured to signal the shift parameter. In another embodiment, a receiver is for use with a cellular communication network and includes a reception unit that receives a transmission. The receiver also includes an offset interpretation unit configured to interpret a shift parameter for a channel quality indication from the transmission, wherein the shift parameter corresponds to an adjustment in an energy per resource element ratio for reporting the channel quality indication.