AUTOMATIC COMPENSATION OF TRANSMIT POWER OF SEPARATE TRANSMIT CHAINS IN MIMO COMMUNICATION

摘要

Systems and methods are disclosed for receivers of transmit chains of a MIMO system to receive transmit power information and to compute channel characteristics of the transmit chains to enable dynamic adjustment of the transmit power on the transmit chain to optimize an overall data throughput while meeting a maximum emission limit, such as a regulatory limit on emitted power. The transmit power and the data rate on the transmit chains may be independently controlled. The receiver of the MIMO system may determine the new transmit power for the transmit chains from the computed channel characteristics and the current transmit power of the transmit chains. Alternatively, the receiver may transmit the computed channel characteristics of the transmit chains to the transmitter for the transmitter to determine the new transmit power for the transmit chains. The transmitter may use the new transmit power to transmit new data on the transmit chains.

主权项

1. A method for communicating over at least two transmit chains of a multiple-input multiple-output (MIMO) channel, comprising:
receiving, by a receiver from a transmitter, information on a current transmit power used to transmit data over each of at least two transmit chains of a plurality of transmit chains; calculating, by the receiver, channel characteristics data for each of the two transmit chains using the information received for the two transmit chains, wherein the channel characteristics data includes a data throughput for each of the two transmit chains; and determining, by the receiver, a new transmit power for at least one of the two transmit chains using the current transmit power and the channel characteristics data for each of the two transmit chains so as to increase a total data throughput for the two transmit chains, wherein a total of the new transmit power to obtain the total data throughput is below a maximum transmit power for the transmitter.