Method for setting transceiving system integrating mixer circuit and digital subscriber loop

Abstract

The invention discloses a method for setting a transceiving system integrating a mixer circuit and a digital subscriber loop. The mixer circuit comprises a transmission unit, a transceiving coil, a transceiving circuit, a mixing and matching circuit and a receiving unit, the transmission unit generates a pair of uploading signals according to a subscriber transmission signal, the transceiving coil transmits the uploading signals to a local side through a pair of twisted pairs and receives a pair of downloading signals from the local side, the mixing and matching circuit receives an adjusting signal to adjust optional impedance of mixing and matching circuit units, the receiving unit receives the downloading signals and generates the adjusting signal according to uploading and downloading signal rates and the signals of the mixing and matching circuit, and the transmission unit adjusts transmission power and bandwidth of the transmission unit and the receiving unit adjusts bandwidth of the receiving unit to realize optimization of the uploading and downloading rates.

Description

technical field [0001] The present invention relates to a mixer circuit for a digital subscriber loop transceiver system and a setting method for a digital subscriber loop transceiver system integrating the mixer circuit, especially a method that can not only increase the upload signal rate, but also effectively A transceiver system for a digital subscriber loop and a setting method for the transceiver system of a digital subscriber loop for reducing the echo noise of an upload signal coupled to a receiving unit. Background technique [0002] Please refer to figure 1 , figure 1 is a schematic diagram illustrating a transceiver system 100 for a digital subscriber loop for the prior art. Such as figure 1 As shown, a transmit driver 102 can generate a pair of upload signals after receiving a user transmit signal US. The coils 1042 and 1044 of the transceiver circuit 104 receive and couple the upload signal to the transceiver coil 106 . Then, the transmitting and receiving ...

AI Technical Summary

Problems solved by technology

Although the matching circuits 114, 116 can be designed as matching circuits with variable impedance, because the matching circuits 114, 116 have not taken into account the power at the transmitting end of the transceiver system 100, the bandwidth of the filter at the transmitting end of the transceiver system 100, the The relationship between the bandwidth of the filter at the receiving end of the system 100 and the corresponding uplink and downlink signal rate, and the reduction of echo, so the echo cancellation capability of the matching circuits 114 and 116 may not be good, resulting in the inability to optimize the uplink and downlink rate

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