Seamless change of depth of a general convolutional interleaver during transmission without loss of data

Abstract

Methods and communication systems are presented, in which impulse noise is monitored on a communication channel, and an interleaver depth is adjusted according to the monitored impulse noise without interrupting communication service.

Description

technical field [0001] The present invention relates generally to communication systems, and more particularly to adaptive communication methods using Digital Subscriber Line (DSL). Background technique [0002] Digital Subscriber Line (DSL) technology provides high-speed data transmission between two modems connected by ordinary telephone lines, in which digital data transfer rates from tens of kilobits per second to tens of megabits per second are transmitted over standard telephone lines (such as twisted pair) to support, while still providing plain old telephone service (POTS). Asymmetric Digital Subscriber Line (ADSL) and Very High Speed ​​Digital Subscriber Line (VDSL) have emerged as popular applications of DSL systems, among which ADSL is defined by the American National Standards Institute (ANSI) standard T1. ) standards G.992.3, G.992.5 to define, and VDSL is defined by ANSI standard T1.424 and ITU-T standard G.993.1. ADSL, VDSL, and other similar DSL systems (co...

AI Technical Summary

Problems solved by technology

However, this solution has the disadvantage that data communication is completely interrupted for a few seconds

As a result, the change of D results in a gap of "12" in the data transmission

Since the usual value of I is e.g. 30, a change of D from 1 will result in a delay jump of 900 bytes

To hide these transitions, a continuous buffer must be added outside the transceiver, which may cause additional (unwanted) continuous latency

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