Digital communication method based on hexadecimal 8-8 constellation diagram mapping

Abstract

The invention discloses a digital communication method based on hexadecimal 8-8 constellation diagram mapping, and relates to the technical field of wireless measurement and control communication. Based on the communication method of the invention, a 16APSK signal constellation diagram is designed, the constellation diagram is designed into eight constellation points on the inner ring and eight constellation points on the outer ring, a differential encoding mode is adopted to carry out constellation diagram phase mapping, amplitude modulation is adopted to carry out constellation diagram amplitude mapping, and an amplitude mapping and differential phase mapping method is adopted at a demodulation end to carry out demodulation judgment. According to the invention, transmission of burst high-capacity detonation data can be ensured within tens of microseconds of survival time. The proposed novel 16APSK (8-8 constellation diagram) telemetry signal has the characteristics of high bandwidthefficiency, high energy efficiency, suitability for high-code burst rate data transmission and the like, and is a novel telemetry system capable of realizing rapid synchronization and low-complexity receiving demodulation.

Description

technical field [0001] The invention relates to the technical field of wireless measurement and control communication, in particular to a digital communication method based on hexadecimal 8-8 constellation map mapping. Background technique [0002] The detonation data measurement environment is a wireless environment with large dynamics, extremely short survival time, and extremely limited platform space and power. Under this condition, the realization of high bit rate telemetry will face the following series of problems: 1. Telemetry allocation S frequency, available The bandwidth is 200Mhz, and the spectrum resources are limited, so it is necessary to choose a high-order modulation system with high spectral efficiency; 2. The increase in the modulation order and the code rate will reduce the system sensitivity. In order to ensure the operating distance, the energy consumption must be increased, and the detonation platform The space is limited, and the power efficiency must...

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Problems solved by technology

[0004] In order to overcome the defects and deficiencies in the above-mentioned prior art, the present invention provides a digital communication method based on hexadecimal 8-8 constellation map mapping, and the purpose of the invention is to solve the telemetry signal communication in the above-mentioned prior art The method cannot be applied to the problem of bursty large-capacity telemetry communication. The communication method of the present invention designs a 16APSK signal constellation diagram. The constellation diagram is designed as 8 constellation points in the inner circle and 8 constellation points in the outer circle, and adopts differential coding Constellation phase mapping is carried out by means of amplitude modulation, and the demodulator adopts amplitude mapping and differential phase mapping methods for demodulation judgment

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