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Method and test device for detecting an error rate

A technology for testing equipment and bit error rates, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems that do not take into account the ability of different data rates

Active Publication Date: 2006-07-05
ROHDE & SCHWARZ GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A disadvantage of this known method is that it does not take into account the ability of modern transmission systems to implement different data rates in the two transmission directions

Method used

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  • Method and test device for detecting an error rate
  • Method and test device for detecting an error rate
  • Method and test device for detecting an error rate

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Embodiment Construction

[0024] FIG. 1 schematically shows the process steps for determining the bit error rate of a device under test. The following description relates to applications in mobile telephone systems, in particular third generation mobile telephone systems, however, in which explicit reference is made to the fact that the method according to the invention can also be used in which in the first transmission direction and other communication systems capable of achieving no data rates in the second transmission direction. One system of this type is, for example, the Internet, and modems used in the Internet can be tested using the method according to the invention.

[0025] In FIG. 1 , a connection is established between a test device 1 and a device under test 2 , which in this example is a mobile telephone device. During the establishment of the connection between the test device 1 and the device under test 2, all parameters necessary for the operation of a mobile telephone device within ...

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Abstract

The invention relates to a test device and a method for detecting an error rate of a receiver device of data transmitted in a first transmission direction (3) to a device (2) that is to be checked. A test device (1) generates a first data block having a first length and a test signal generated on the basis of said first data block is sent. The test signal is received and evaluated by the device (2) to be checked. A second data block having a second, different length is generated on the basis of the evaluated test signal in order to obtain different data rates in the directions of transmission, said second data block being sent as response signal in a second direction of transmission (4). The response signal is received and evaluated by the transmitter / receiver device of the test device (1) and the error rate is detected by an evaluation unit (11) of the test device (1) that compares the contents of both data blocks, wherein the content of the shorter data block (31) is compared with the content of a corresponding segment (29.1) of the longer data block (29) in order to determine the error rate.

Description

technical field [0001] The invention relates to a method and test equipment for measuring the bit error rate of receiver equipment. Background technique [0002] In order to determine the quality of a signal receiver device, a test signal is sent to the device under test which contains the receiver device to be tested. The test signal is generated from the first data block according to the transmission protocol. The device under test receives the test signal and evaluates it; that is, the device under test reverses the processing carried out based on the transmission protocol in order to recover the original data contained in the test signal. In an ideal situation, where no error occurs on the transmission path or in the estimation process, the estimated test signal of the device under test corresponds perfectly to the content of the first data block originally sent. match; that is, are identical bit-wise. [0003] From the estimated test signal, the device under test the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04Q7/34H04L69/40H04W24/00
CPCH04L43/50H04L12/2697H04W24/00
Inventor 皮尔名·斯博克尤维·贝德尔托马斯·布劳恩
Owner ROHDE & SCHWARZ GMBH & CO KG