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System And Method For Consecutive Identical Digit Reduction

一种数字、字节的技术，应用在用于减少连续相同数字的系统和方法领域

Inactive Publication Date: 2012-04-18
ALCATEL LUCENT SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The combined overhead of 9B10B encoding and FEC encoding is 25%

Method used

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  • System And Method For Consecutive Identical Digit Reduction
  • System And Method For Consecutive Identical Digit Reduction
  • System And Method For Consecutive Identical Digit Reduction

Examples

Experimental program
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Embodiment Construction

[0019] exist figure 2 The flowchart 100 shows a method for, for example, figure 1 A method for performing transmission in the PON 10 data transmission network. In step 101, a transport stream to be transmitted from a sending end (ie, OLT 12 or ONU 16)' of the network is analyzed to determine whether the transport stream includes more than a threshold number of consecutive identical numbers. For transport streams that include more than a threshold number of consecutive identical digits, an error is generated in the transport stream that reduces the number of consecutive identical digits below the threshold (step 102). The transport stream including the generated errors is then sent to the receiver component of the PON (step 103).

[0020] exist image 3 , shows an example of GPON's transmitter and receiver components that can be modified to provide improved CID performance. The above process can be implemented for downlink transmission or can be implemented for uplink com...

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Abstract

In a data transmission network, such as a passive optical network, the consecutive identical digit (CID) handling requirements may be reduced by providing a CID monitoring module at the transmitter end that monitors the number of CIDs in a transmission stream. Where the CID number exceeds a threshold, an error generation module induces an error in the transmission stream to reduce the CID below the threshold. The modified transmission stream may then be transmitted to a receiver, allowing clock recovery be performed with improved stability at the receiver. Once clock recovery is achieved, the receiver can then process the transmission stream to correct the errors induced at the transmitter end.

Description

[0001] Related Application Citations [0002] This application claims priority to US Provisional Patent Application Serial No. 61 / 214,780, filed April 28, 2009, the entire contents of which are hereby incorporated by reference. technical field [0003] The present disclosure relates to systems and methods for reducing consecutive identical digit (CID) requirements in data transmission systems including, but not limited to, optical networks, electrical interfaces, and the like. Background technique [0004] An optical network, such as a Passive Optical Network (PON), is a flexible access network capable of providing a variety of broadband and narrowband services to business and residential users. Network operators consider their infrastructure to be relatively inexpensive because no active equipment or power is required between the operator's central office (CO) and the customer's premises (CP). Such as figure 1 As shown in the PON 10, the downlink PON service is designat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L7/00H04L7/033H03L7/08H03L7/099H04B10/08
CPCH04L1/0042H04L25/4908H04B10/07
Inventor W·韦伯
Owner ALCATEL LUCENT SAS