Device and method for eliminating near-end crosstalk in multi-wire-to-copper wire transmission

Abstract

The invention discloses a device for eliminating near-end cross-talk in transmission of multiple copper wire pairs. The device comprises local ends and clients which cooperate with the local ends. The device further comprises a signal generator which is arranged at the side of the local ends and is used for generating synchronous clock signals with rising edges and falling edges for the local ends; FPGA (Field Programmable Gate Array) chips which are arranged at the local ends and connected with the signal generator so as to control the data transmission state of the local ends based on the received synchronous clock signals and are connected with the clients; and a storage mechanism connected with the FPGA chips. The invention provides a device for eliminating near-end cross-talk in transmission of multiple copper wire pairs and a method applying the device, so that different copper wire pair transmission systems can send and receive signals at the same time, the sent signals are prevented from interfering near-end receiving ends, the effective transmission bandwidth is improved, the access capability of residential customers, commercial customers and the like is improved.

Description

technical field [0001] The invention relates to a method for eliminating near-end crosstalk used in communication transmission situations. More specifically, the present invention relates to an apparatus and method for eliminating near-end crosstalk in multi-pair copper transmission under the condition of coexistence in the same bundle of cables. Background technique [0002] Copper wire transmission systems have rapidly developed into the most widely used and most successful fixed broadband access. With the sharp increase in the demand for access bandwidth, the line frequency band of the copper wire transmission system is also continuously increasing. The high frequency band of some systems has reached dozens of MHz, or even hundreds of MHz. Ratio drops, the line transmission rate is reduced or the bit error rate is increased or even the line is dropped, which seriously affects the stability of the system and customer experience. The crosstalk problem has become the main f...

AI Technical Summary

Problems solved by technology

However, for the transmission system with the same frequency band of the uplink / downlink line, the filter cannot eliminate the near-end crosstalk well. Therefore, in the copper wire transmission system, because the sending and receiving frequencies of different wire pairs are the same, if one pair and another wire pair If the sending and receiving data are not synchronized, serious near-end crosstalk will occur, and how to realize the synchronization of sending and receiving data in the copper wire transmission system of bundled wire pairs is the key problem to be solved by the present invention

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