Implantable UWB-BPSK transmission system and method based on carrier frequency tracking technology

Abstract

The invention discloses an implantable UWB-BPSK transmission system and an implantable UWB-BPSK transmission method based on a carrier frequency tracking technology. The implantable UWB-BPSK transmission system comprises a wireless power supply receiving and recovery unit, a carrier recovery unit, a first-order Gaussian pulse generating unit, a BPSK modulation unit, a numerical control gain power amplifier, an ASK uncorrelated demodulator and a signal attenuator. The implantable UWB-BPSK transmission system adjusts carrier frequency of a narrowband ASK extracorporal modulation signal to achieve the extracorporal real-time tracking technology for intracorporal carrier frequency; the implantable UWB-BPSK transmission system obtains an UWB-BPSK modulation signal with a spectral gap through carrying out BPSK modulation, provides required spectrum space and frequency band range for a narrowband ASK modulation signal uA by utilizing the spectral gap, ensures the real-time alignment of the spectral gap of the UWB-BPSK signal and spectrum of the extracorporal narrowband ASK modulation signal, achieving frequency band and spectrum sharing of the UWB signal and the narrowband signal, and has the advantages of adjustable system carrier frequency and adjustable power spectrum frequency range. The implantable UWB-BPSK transmission system can be widely used in the bio-medical treatment field.

Description

technical field [0001] The invention relates to the technical field of communication circuits, in particular to an implantable UWB-BPSK transmitting system and method based on carrier frequency tracking technology. Background technique [0002] The rapid development of biomedical microelectronics technology for the purpose of biomedicine has accelerated the research on cutting-edge technology fields such as biological EEG signal acquisition, ECG signal monitoring, epilepsy and spinal injury rehabilitation medicine, and visual restoration. In order to meet the objective needs of long-term real-time monitoring and recording of a large number of neural signals and other bioelectrical behavioral signals, wireless communication methods with low power consumption, high data rate, large bandwidth, and high security that meet the requirements of biological implants have also become the industry's demand. The pursuit of goals. [0003] At present, traditional biomedical research gen...

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Problems solved by technology

[0004] At present, the industry is in the initial research stage of wireless transmission of bioelectrical signals in an implanted environment. A communication method is used in the frequency band to ensure communication quality and security, and to avoid spectrum interference and other phenomena. This method greatly reduces the utilization rate of the spectrum

In addition, this type of implantable device is often powered by an implanted built-in battery, so that the implanted device cannot obtain a long service life, and there are also problems in terms of the volume of the implanted device, chemical pollution of the battery, and biological rejection. There is a problem

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