Linear detection method for signals in non-free space environment around human body

Abstract

The invention belongs to the technical field of signal processing, and relates to a linear detection method for signals in non-free space environment around a human body, which comprises the following steps of: preprocessing received wireless signals and beginning timing; performing primary detection on the received signals by using the conventional linear detection methods respectively, and taking a linear detection method with the priority for detecting a performance curve as a primary detection method; when an electrocardiosignal of the human body meets physical realization conditions, detecting the received signals by using the primary detection method as the optimal detection method, otherwise, detecting the received signals by using an energy detection method as the optimal detection method; and in the process of detecting the received signals by using the optimal detection method, detecting again when the posture of the human body is changed or the time of a timer is greater than a time threshold. The linear detection method effectively avoids the problem that a single detection method cannot treat various channel conditions, improves the efficiency of screening the detection methods, and improves the detection performance in the non-free space environment around the human body.

Description

technical field [0001] The invention relates to a method in the technical field of signal processing, in particular to a linear detection method for signals in a non-free space environment around a human body. Background technique [0002] Wireless devices are developing towards miniaturization and personalization, among which the development of wireless ad hoc networks is very representative. In many wireless application fields, medical wireless technology has been developed very rapidly. In order to achieve the purpose of real-time medical monitoring, it is necessary to place sensors in many parts of the body and process the data measured by these sensors in a timely manner. So the concept of Wireless Body Area Network (WBAN) is proposed. In the application of wireless body area network in the medical field, it is necessary to monitor the physiological information of the human body through wireless devices placed on the surface of the human body, and the body area networ...

AI Technical Summary

Problems solved by technology

However, this technology is developed around the wireless standard free space, and does not specifically study the actual channel characteristics in the wireless body area network.

Any of the independent linear detection methods can only complete signal detection in a fixed environment. Considering the complexity of human body posture changes, the method proposed in this technology cannot cope with the changing wireless environment around the human body. The signal detection needs