LTE (long-term evolution) communication system speech quality evaluation method

A voice quality and communication system technology, applied in the field of evaluating the voice quality of the LTE communication system, can solve the problems of inaccurate evaluation of the objective evaluation method of the voice quality, etc.

Inactive Publication Date: 2015-04-08
DALIAN UNIV OF TECH
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Problems solved by technology

The objective assessment method of voice quality based on the E-Model model still has the problem of inaccurate assessment

Method used

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  • LTE (long-term evolution) communication system speech quality evaluation method
  • LTE (long-term evolution) communication system speech quality evaluation method
  • LTE (long-term evolution) communication system speech quality evaluation method

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Embodiment Construction

[0171] The present invention will be further described below in conjunction with the accompanying drawings.

[0172] In order to verify the effectiveness of the inventive method, according to figure 1 As shown in the flow chart, relevant real-time speech quality evaluation experiments are carried out. The original speech files are randomly selected from the ITU-T P-series speech database supplement23, including 10 male voices and 10 female voices. The selected voice files are different from those selected in the training phase. According to the needs of the evaluation algorithm, these voices are divided into 126 segments, and different LTE communication system parameters (including system delay, packet loss, codec mode, etc.) are set, and then the voice quality of these segments is evaluated separately. Some results are shown in Table 4. As can be seen from Table 4, by comparing with the PESQ evaluation points, it can be seen that the correlation degree of the technical sol...

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Abstract

The invention discloses an LTE (long-term evolution) communication system speech quality evaluation method. The method includes the following steps: initializing E-Model model parameters; extracting relevant parameters; extracting speech segments; calculating speech encoding and decoding loss; calculating delay loss; calculating jitter loss; calculating MOS (mean opinion scores) and transmission grade factors R of speech evaluation, and converting the transmission grade factors R into corresponding MOS. An RTP (real-time transport protocol) and an RTCP (real-time transport control protocol) of an application layer are introduced into a speech quality evaluation scheme of an LTE communication system, and speech quality loss caused by delay and jitter in the LTE communication system can be evaluated effectively; the RTCP is introduced into an estimation method of LTE communication system network packet delay, and evaluation performance of the speech quality loss caused by delay can be improved effectively; the RTP is introduced into an estimation method of LTE communication system network packet jitter, evaluation performance of the speech quality loss caused by jitter can be improved effectively, and dispatching control and wireless resources allocation can be performed adaptively.

Description

technical field [0001] The invention relates to a speech quality evaluation technology, in particular to a method for evaluating the speech quality of an LTE communication system. Background technique [0002] LTE (Long-Term Evolution, long-term evolution) is a comprehensive evolution of the third-generation mobile communication network including the core network by 3GPP (3rd Generation Partnership Project), which uses some advanced technologies, including Orthogonal frequency division multiplexing technology, multiple-input multiple-output technology (MIMO), smart antenna technology based on beamforming, adaptive modulation and coding link technology (AMC), etc. At the access network level, the LTE communication system is mainly composed of two parts: the air radio interface and the radio access network. On the downlink, the LTE communication system adopts Orthogonal Frequency Division Multiple Access (OFDMA) technology; on the uplink, it adopts Single Carrier-Frequency Di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04W24/00G10L25/60
Inventor 陈喆殷福亮王冰倩贺锐
Owner DALIAN UNIV OF TECH
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