Method for controlling transmit power in multichannel system, receive end, and transmit end

摘要

The present invention discloses a method. The method includes: receiving, through N receive channels, N signals sent by a transmit end, where the N signals include a channel estimation sequence; determining a total receive power of an ith receive channel; determining a channel matrix according to a received channel estimation sequence; determining a useful receive power of the ith receive channel according to the channel matrix and the total receive power of the ith receive channel; determining, according to the channel matrix and a receive power that is required by single-channel communication, a receive power required by the ith receive channel; and sending a power adjustment message to the transmit end if the useful receive power of the ith receive channel does not match the receive power required by the ith receive channel, so that the transmit end adjusts a transmit power of an ith signal.

主权项

1. A method for controlling a transmit power in a multichannel system, the method comprising:
receiving, through N receive channels, N signals sent by a transmit end, wherein an ith signal in the N signals is sent on an ith transmit channel in N transmit channels by the transmit end, each signal in the N signals comprises a channel estimation sequence, N is a positive integer, N≧2, and i=1, 2, . . . , N; determining a total receive power of an ith receive channel in the N receive channels; determining a channel matrix H according to a received channel estimation sequence; determining a useful receive power of the ith receive channel according to the channel matrix H and the total receive power of the ith receive channel, wherein the useful receive power of the ith receive channel indicates a receive power, which is occupied by the ith signal, in the total receive power of the ith receive channel; determining, according to the channel matrix H and a receive power that is required by single-channel communication, a receive power required by the ith receive channel; and sending a power adjustment message to the transmit end if the useful receive power of the ith receive channel does not match the receive power required by the ith receive channel, so that the transmit end adjusts a transmit power of the ith signal according to the power adjustment message.