Patent ID: 8369437
Filing Date: 2013-02-05
Classification: H04B

Abstract:
1. A signal transmission method for a multiple input multiple output (MIMO) antenna system, the MIMO antenna system having a first signal transmission channel and at least one second signal transmission channel, the signal transmission method comprising the steps of: enabling a first signal transmission apparatus to transmit a signal with a first transmission mode and a first transmission power via the first signal transmission channel; enabling a second signal transmission apparatus to receive the signal; enabling the second signal transmission apparatus to calculate and transmit an interference value of the first signal transmission channel, wherein the interference value is related to a transmission power of the at least one second signal transmission channel; enabling the first signal transmission apparatus to calculate a power weight value according to the interference value; enabling the second signal transmission apparatus to calculate and transmit a signal to noise ratio (SNR) of the signal; enabling the first signal transmission apparatus to receive an acknowledgement (ACK) of the signal from the second signal transmission apparatus; enabling the first signal transmission apparatus to determine that the SNR of the signal is less than a predetermined threshold value; enabling the first signal transmission apparatus to determine that the SNR of the signal falls within a predetermined threshold range; enabling the first signal transmission apparatus to subtract a correction value from the predetermined threshold value; enabling the first signal transmission apparatus to set a system threshold value as the subtracting result; enabling the first signal transmission apparatus to update the predetermined threshold value into the subtracting result, wherein the subtracting result falls within the predetermined threshold range; enabling the first signal transmission apparatus to determine a second transmission power of the first signal transmission channel according to the power weight value; and enabling the first signal transmission apparatus to determine a second transmission mode of the first signal transmission channel according to the system threshold value.