Full-duplex acoustic communication method for high-traffic multi-hop UACNs

2021 ◽  
Author(s):  
Guang Yang ◽  
Jie Zhang ◽  
Guangjie Han ◽  
Yujie Qian
Keyword(s):  
Acoustic Communication ◽  
Full Duplex ◽  
Communication Method

scholarly journals Study of Full-Duplex Communication with Excellent Security by 3-Level Communication Method

Electronics ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 1186
Author(s):  
Seong-Mi Park ◽  
Sung-Jun Park ◽  
Sang-Kil Lim
Keyword(s):  
Communication System ◽  
Full Duplex ◽  
Communication Security ◽  
Communication Line ◽  
Network Construction ◽  
Communication Signal ◽  
Half Duplex ◽  
Current Transmission ◽  
Communication Method ◽  
Time Division

Currently, the industry is using the MODBUS communication method, utilizing RS485 for the distributed equipment and network construction. This method has a rather good transmission and reception distance but has a disadvantage in that it is a half-duplex communication method that cannot simultaneously transmit and receive. Therefore, there is a great need for a full-duplex communication system that can simultaneously transmit and receive two-wire communications. Therefore, in this paper, we propose new communication hardware equipment that can implement a full-duplex communication method by communication signal level in order to overcome the disadvantage of communication speed when using a full-duplex communication method by time division method. The proposed communication hardware is a structure that can transmit and receive at the same time in such a way that two pieces of equipment communicating by two-wire communication can apply the outgoing signal to the same communication line and detect the received signal at the same time. Therefore, the receiving side can analyze the received signal based on the information on the current transmission signal. This signal can only be analyzed by the two communicating devices, indicating that communication security is very good.

Study on Acoustic Communication Methods in Periodic Tube Structure

2012 ◽  
Vol 241-244 ◽  
pp. 2323-2326
Author(s):  
Zhi Gang Li ◽  
Wen Jie Shu ◽  
Zhi Chuan Guan ◽  
Ming Quan Huang
Keyword(s):  
Acoustic Communication ◽  
Transmission Power ◽  
Communication Method ◽  
Actual Environment ◽  
Communication Methods ◽  
Experimental Structure ◽  
Tube Structure ◽  
Periodic Tube ◽  
Bpsk Modulation

With many periodical discontinuous boundaries, periodic tube structure is prone to inter-symbol interference in acoustic communication. To look for the appropriate communication method and improve the quality of acoustic communication in the structure, experiments were carried out in the real periodic structure using raised cosine ASK, FSK and BPSK modulation respectively. The results show that：in periodic tube structure, ASK, FSK, and BPSK all can realize normal acoustic communication in the condition without noise or the noise is weak. Raised cosine ASK modulation can better use transmission power and get the highest data rate (up to 65.7Kbps in the experimental structure) in un-noise environment. BPSK has the best noise immunity in the condition with noise. So, the BPSK is more suitable for the actual acoustic communication in periodic tube structure in the actual environment.

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