Efficient high-bit rate signal bit error rate test method

A technology of bit error rate testing and high bit rate, which is applied in the field of efficient high bit rate signal bit error rate testing, can solve the problems of constellation diagram spurious and unsatisfactory output code pattern, and achieve accurate calibration and bit error rate curve precise effect

Inactive Publication Date: 2017-10-24
SHANGHAI SATELLITE ENG INST
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Problems solved by technology

[0003] When the satellite downlink transmits high-bit rate data signals, when the signal is added with noise, the constellation diagram of the signal received by the receiver equipment becomes spurious, and the demodulated data has bit errors, but this phenomenon is not linear , but has a specific mathematical curve, and this bit

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Embodiment Construction

[0017] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solution of the present invention in detail.

[0018] Such as figure 1 As shown, the efficient high bit rate signal bit error rate testing method measuring method of the present invention comprises the steps:

[0019] Step 101, the high bit rate data signal transmitted by the satellite is connected to the noise source, and the output power is divided into two channels after the noise source is added to the noise, one is connected to the spectrum analyzer to measure the frequency spectrum and signal-to-noise ratio, and the other is connected to the high bit rate demodulation device for signal to demodulate;

[0020] Step 102, open the bit error rate testing software, set the number of measurements N of the software, the number of times is the ratio of the satellite download data time to a single measurement time, and set the range of...

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Abstract

The invention discloses an efficient high-bit rate signal bit error rate test method. The method comprises the following steps that: step 1, a satellite transmits high-bit rate data signals, and the high-bit rate data signals are connected with a noise source, after noises are added to the high-bit rate data signals by the noise source, output power is divided into two paths, wherein one path is connected with a spectrum analyzer so that the spectrum analyzer can measure a spectrum and a signal to noise ratio, and the other path is connected with a high-bit rate demodulation device so that the high-bit rate demodulation device can perform demodulation; and step 2, error rate test software is enabled, the number of the measurement times of the software is set to be N, and the number of the measurement times is a ratio of time when the satellite transmits the data to singe measurement time, and the range of the output power of the noise source is set, and the range can be set according to the power of the transmitted signals, and N is a natural number. With the method of the invention adopted, bit error rate-signal to noise ratio curve calibration time is greatly shortened, and a bit error rate curve can be accurately calibrated.

Description

technical field [0001] The invention relates to a method for testing the bit error rate of a satellite ground, in particular to an efficient method for testing the bit error rate of a signal with a high bit rate. Background technique [0002] With the increasing demand of users, the amount of satellite load data is gradually increasing, and the design of the downlink becomes complicated, including high downlink code rate, etc. In addition to the quality of the channel, the design of the spreading code is also of great significance , a good spread spectrum pattern, its anti-noise performance is also good, and the bit error rate of the downlink data is low. [0003] When the satellite downlink transmits high-bit rate data signals, when the signal is added with noise, the constellation diagram of the signal received by the receiver equipment becomes spurious, and the demodulated data has bit errors, but this phenomenon is not linear , but has a specific mathematical curve, and...

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Application Information

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IPC IPC(8): H04B17/336H04B17/309
CPCH04B17/309H04B17/336
Inventor 卢丹闫蕾董房撒文彬李伟强
Owner SHANGHAI SATELLITE ENG INST
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