Title:
INTRA-HUMAN BODY ULTRASONIC COMMUNICATION METHOD AND DEVICE BASED ON PACKET INDEX MODULATION
Document Type and Number:
WIPO Patent Application WO/2021/082221
Kind Code:
A1
Abstract:
Disclosed are an intra-human body ultrasonic communication method and device based on packet index modulation. The method comprises dividing serial information into blocks at a transmitting node, each information block comprising a modulation bit and an index bit; dividing each transmission frame into a plurality of packets; performing index modulation on the packets of each transmission frame, and determining, according to the index bit, an active packet sequence number corresponding to the packet; performing digital modulation on the modulation bit of each information block, and mapping the digitally modulated modulation bit to the active packet corresponding to the active packet sequence number; sequentially performing parallel-to-serial conversion, pulse shaping, and ultrasonic conversion on a plurality of information blocks processed in parallel, to obtain a transmission signal, and transmitting the transmission signal in a human body by using transmission frames; and receiving at a receiving node the transmission signal transmitted through the human body, and demodulating the transmission signal to obtain the index bits and modulation bits. The present invention can effectively overcome the multipath effect of the human body and achieve high-speed energy-saving intra-human body ultrasonic communication.
Inventors:
GUAN QUANSHENG (CN)
WANG QIANQIAN (CN)
WANG QIANQIAN (CN)
Application Number:
PCT/CN2019/126368
Publication Date:
May 06, 2021
Filing Date:
December 18, 2019
Export Citation:
Assignee:
UNIV SOUTH CHINA TECH (CN)
International Classes:
H04B14/02; H04B11/00; H04B13/00
Foreign References:
| CN110166142A | 2019-08-23 | |||
| CN108289259A | 2018-07-17 | |||
| CN101199427A | 2008-06-18 | |||
| US20170149599A1 | 2017-05-25 |
Attorney, Agent or Firm:
GUANGZHOU HUAXUE INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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