Method and device for decoding short burst signal in high dynamic range

Abstract

The invention discloses a method and a device for decoding a short burst signal in a high dynamic range, relates to the field of satellite communication, and solves the problem that the decoding performance of the short burst signal is reduced due to the fact that the influence of signal amplitude is not considered during decoding processing or other problems occur when the signal amplitude is considered in the prior art. The method comprises the steps: performing soft demodulation on the short burst signal received by the receiver to obtain likelihood information, and acquiring a data sequence of the short burst signal according to the likelihood information; performing mean value calculation on the data sequence to obtain a data mean value of the data sequence, and obtaining a scaling factor of the data mean value according to the data mean value; scaling the data sequence according to the scaling factor to obtain scaled data; and carrying out decoding processing on the scaled data to obtain a decoding result. The signal dynamic range supported by decoding is increased, short burst signals can be processed without analog or digital AGC, and the decoding performance is improved.

Description

Technical field [0001] The present invention relates to the field of satellite communications, and more particularly, it relates to a decoding method and apparatus for short burst signals at a high dynamic range. Background technique [0002] With the rapid development of aerospace technology, satellite communication has become one of the mainstream communication methods. Satellite communications has a wide communication range, strong disaster relief, and supports a variety of business features that have become one of the indispensable communication methods. [0003] Channel coding technology has a relatively independent position throughout the communication system, one of its key technologies, which determines the performance of the communication system. In recent years, Xiangnong limit coding, such as turbo, ldpc, etc. By comparing Turbo, LDPC, Polar code performance, it is understood that in the case of short bursts, the theoretical performance of Turbo codes is superior to th...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a decoding method and device for a short burst signal in a high dynamic range, so as to solve the problem of not considering the influence of the signal amplitude when doing Turbo decoding in the prior art, or considering the signal amplitude But there will be other problems, such as the increase of hardware cost or the slow convergence of the loop; the problem that the decoding performance of the short burst signal is reduced. The present invention considers the influence of the signal amplitude on the decoding performance, and increases the decoding support The dynamic range of the signal improves the reliability of signal transmission in the communication system, and it can process short burst signals without analog or digital AGC, which improves the decoding performance and does not bring additional costs in hardware implementation.

Images