Channel power balancing in a multi-channel transceiver system
View Patent ↗A transceiver according to some embodiments of the present invention receives data from a plurality of frequency separated transmission channels from a complementary transmitter of another transceiver and adjusts the power output of certain channels in a transmitter of the receiver. Upon start-up, the power output levels of signals in individual channels in the transmitter can be preset. A power balance can determine new power output levels of the transmitter from parameters in the receiver while receiving data transmitted by a similarly situated complementary transmitter in a second transceiver coupled to the transceiver. In some embodiments, a complementary receiver of the other transceiver determines the power outputs of the transmitter and the power levels are transmitted to the transmitter by the other transceiver.
1. A transceiver, comprising:
a receiver that can receive data on a plurality of frequency-separated channels from a transmission medium;
a transmitter that can transmit data on the plurality of frequency separated channels on the transmission medium; and
a power balancer that adjusts the power output on at least one of the plurality of frequency separated channels on the transmitter based on signals received from the receiver, by adjusting at least one gain of at least one amplifier coupled to transmit signals on at least one of the plurality of frequency separated channels wherein the signals received from the receiver are gain values to amplifiers amplifying signals down-converted from each of the plurality of frequency-separated channels, wherein the gain values are determined in response to data received from a complementary transmitter transmitting through the transmission medium, wherein the at least one gain is adjusted by multiplying the at least one gain by a ratio of a corresponding one of the gain values and an average gain value.
2. The transceiver of claim 1 , wherein the gain values are determined in an automatic gain circuit.
3. The transceiver of claim 1 , wherein the at least one gain is adjusted by multiplying the at least one gain by a ratio of a corresponding one of the gain values and a threshold gain value.
4. The transceiver of claim 3 , wherein the at least one gain is adjusted only if the corresponding one of the gain values is greater than the threshold gain value.
5. The transceiver of claim 1 , wherein the power balancer is enabled during a start-up process.