Method and device for operating a precoded MIMO system

摘要

A method is provided for generating precoder data, comprising: obtaining transmit power data indicative of a transmit power of a plurality of multiple-input/multiple-output signals; obtaining signal quality data, the signal quality data including at least one measure of a quality of the plurality of multiple-input/multiple-output signals; obtaining channel data with respect to a wireless channel, the channel data including a measure of respective channel parameters of each of a plurality of channel paths in the wireless channel; constraining one or more system performance parameters; and determining first and second precoder diagonal values (wA and wB) based on the signal quality data, the transmit power data, the channel data, and the one or more constrained system performance parameters.

主权项

1. A method for generating communications over a multiple-input multiple-output (MIMO) channel between a transmitter having a plurality of transmitter antennas and a receiver having a plurality of receiver antennas, the method comprising:
obtaining one or more transmit power data indicative of a transmit power of a plurality of received MIMO signals; obtaining one or more noise variance data from the plurality of received MIMO signals received via the plurality of receiver antennas respectively, the noise variance data including at least one measure of noise associated with the plurality of received MIMO signals; obtaining one or more channel data associated with the MIMO channel; constraining two or more system performance parameters by constraining a first and a second signal-to-interference-plus-noise ratio (SINR) of two respective symbols to be contained in a plurality of transmit signals, wherein each of the two or more system performance parameters comprises the first and the second SINR of the two respective symbols; determining first and second precoder diagonal values based on the noise variance data, the transmit power data, the channel data, and the two or more constrained system performance parameters; and generating communications over the MIMO channel using a precoder matrix that includes the determined first and second precoder diagonal values.