Decoder decoding performance test method and device

Abstract

The embodiment of the invention provides a testing method and apparatus for a decoding performance of a decoder. The method comprises: a testing tool sends a testing code source to a decoder and thus the decoder carries out decoding on the testing code source, wherein the testing code source includes a sample code source and a correct message code and the sample code source may cause failed decoding of the decoder; the testing tool obtains decoding time and a decoding result of decoding on the testing code source by the decoder; and the testing tool determines the decoding performance of the decoder according to the decoding time and the decoding result. According to the embodiment of the invention, the interference-included testing code source is sent to the decoder by the testing tool, so that the decoder carries out decoding on the interference-included testing code source; and the testing tool determines the decoding performance of the decoder based on the decoding time and the decoding result of the testing tool. Therefore, testing on the decoding performance of the decoder is realized under the circumstance that the code source is under interference.

Description

technical field [0001] The embodiments of the present invention relate to the field of communication technologies, and in particular to a method and device for testing decoding performance of a decoder. Background technique [0002] Transponder systems are now widely used in railway systems, including ground equipment and on-board equipment. BTM is the core equipment in on-board equipment. The core function of BTM is decoding. Specifically, the decoder of BTM is responsible for the TA signal received by BTM to decode. After research, it is found that the decoding performance of the decoder is directly related to the immunity of BTM and the maximum speed of the train using BTM. [0003] The decoding performance of the decoder can be considered in two aspects: 1) Decoding time refers to the time from when the decoder receives the correct frame message code source to finally solving the legal user message, and the decoding time The shorter the decoding performance, the better...

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Problems solved by technology

[0003] The decoding performance of the decoder can be considered in two aspects: 1) Decoding time refers to the time from when the decoder receives the correct frame message code source to finally solving the legal user message, and the decoding time The shorter the decoding performance, the better; 2) The shortest code source length that can be decoded, when the code sources are all good codes, that is, the code source is not disturbed, the shortest code source length that can be decoded for a long message is 1100 bits, the shortest code source length that can be decoded for a short message is 462 bits, but when the code source is interfered, the shortest code source length that can be decoded for a long message is greater than 1100 bits, and the shortest code source length for a short message is The length of the code source that can be decoded is greater than 462 bits. If the length of the shortest code source that can be decoded is too large, it will cause the decoder to not decode and a crash state will occur.

[0004] In the existing technology, large-scale simulation equipment is used to perform functional tests on the BTM machine, or to test the decoding performance of the decoder only when the code source is not disturbed. However, in the field test environment, the code source will be affected by various The interference of the decoder will reduce the decoding performance of the decoder, and there is no method in the prior art to test the decoding performance of the decoder when the code source is interfered.

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