Arbitrary code rate universal MPSK demodulation system and demodulation method thereof

A technology of a demodulation system and a demodulation method, which is applied in the universal MPSK demodulation system of any code rate and its demodulation field, can solve the problems that 8PSK does not have bit error rate performance and is difficult to meet the high standard requirements of communication quality, and achieves Guarantee the effect of excellent performance, excellent compatibility, and low consumption of hardware resources

Active Publication Date: 2022-05-06
天津讯联科技有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, 8PSK does not have good bit error rate performance, and it is difficult to meet the high standard requirements of the system for communication quality. Under the condition that the information rate, signal transmission power, and noise power spectral density of BPSK and QP...

Method used

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  • Arbitrary code rate universal MPSK demodulation system and demodulation method thereof
  • Arbitrary code rate universal MPSK demodulation system and demodulation method thereof
  • Arbitrary code rate universal MPSK demodulation system and demodulation method thereof

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Embodiment 1

[0085] The modulated signal first passes through the cavity filter to realize band-pass filtering and suppress out-of-band noise. The cavity filter adopts the company's self-developed XL-BLP2250-100-QT module, which has strong out-of-band suppression ability and excellent noise figure small features. After the signal is first amplified by the low noise amplifier, the low noise amplifier adopts the CMA-545+ chip of Mini-Circuits Company. This amplifier has many advantages such as low noise figure, high compression power point and wide operating frequency range. The secondary amplifier adopts the DVGA1-242A+ chip of Mini-Circuits Company, which has the characteristics of large magnification and high compression power point. The broadband transceiver uses the ADRV9009BBCZ chip of Analog Devices to complete the quadrature down-mixing function of the signal. This chip has many advantages such as wide operating frequency range, large dynamic range, and wide RF channel bandwidth, and...

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Abstract

The invention provides a general MPSK demodulation system for any code rate and a demodulation method thereof. The general MPSK demodulation system comprises an orthogonal down-conversion module, a first variable time length integrator module, a second variable time length integrator module, a complex multiplier module, a CORDIC phase discrimination module, a demodulation module, a PI controller module, a numerical control oscillator module, a symbol synchronization module and a phase adjustment module. The arbitrary code rate universal MPSK demodulation system and the demodulation method thereof have the advantages that the arbitrary code rate can be adjusted, the modulation mode of any MPSK can be compatible, the excellent performance of a demodulator is guaranteed through a variable time length integrator and a cordic phase discrimination algorithm, and the demodulation method is low in hardware resource consumption and convenient for hardware implementation.

Description

technical field [0001] The invention belongs to the technical field of deep space detection, and in particular relates to a universal MPSK demodulation system with an arbitrary code rate and a demodulation method thereof. Background technique [0002] In the field of deep space exploration, PSK modulation is the most suitable for telemetry. This is because this modulation method has the lowest demodulation threshold and is the easiest to implement. It is a constant envelope modulation and has low linearity requirements for the transmitting power amplifier. Among them, 8PSK does not have good bit error rate performance, and it is difficult to meet the high standard requirements of the system for communication quality. Under the condition that the information rate, signal transmission power, and noise power spectral density of BPSK and QPSK are the same, the average error rate of BPSK and QPSK The bit rate is the same, but the main lobe width of the power spectrum of QPSK is h...

Claims

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Application Information

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IPC IPC(8): H04L27/227H04L27/00
CPCH04L27/2273H04L27/0008Y02D30/70
Inventor 王仁智刘建梁奉辉秦文张丹丹
Owner 天津讯联科技有限公司
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