An Improved CDMA-Based MAC Protocol for Underwater Acoustic Wireless Sensor Networks

2011 ◽  
Author(s):  
Guangyu Fan ◽  
Huifang Chen ◽  
Lei Xie ◽  
Kuang Wang
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Mac Protocol ◽  
Wireless Sensor ◽  
Underwater Acoustic

scholarly journals An Adaptive OFDMA-Based MAC Protocol for Underwater Acoustic Wireless Sensor Networks

Sensors ◽  
2012 ◽  
Vol 12 (7) ◽  
pp. 8782-8805 ◽  
Author(s):  
Issa M. Khalil ◽  
Yasser Gadallah ◽  
Mohammad Hayajneh ◽  
Abdallah Khreishah
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Mac Protocol ◽  
Wireless Sensor ◽  
Underwater Acoustic

scholarly journals OSPG-MAC: An OFDMA-Based Subcarrier Pregrouping MAC Protocol for Underwater Acoustic Wireless Sensor Networks

2019 ◽  
Vol 2019 ◽  
pp. 1-12
Author(s):  
Yishan Su ◽  
Yongpeng Zuo ◽  
Zhigang Jin ◽  
Xiaomei Fu
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Network Performance ◽  
Mac Protocol ◽  
Mac Protocols ◽  
Wireless Sensor ◽  
Media Access Control ◽  
Underwater Acoustic ◽  
Available Bandwidth ◽  
Multiple User

In underwater acoustic wireless sensor networks (UAWSNs), designing media access control (MAC) protocols is highly challenging because of their significant influence on network performance. It is a great challenge to design suitable MAC protocols for UAWSNs because of the specific characteristics of underwater acoustic channels, such as low communication rates, large propagation delays, and limited available bandwidth. Orthogonal frequency division multiple access (OFDMA) is a special case of OFDM-based multicarrier modulation in which multiple user symbols are transmitted simultaneously using different subcarriers with overlapping orthogonal frequency bands. In this paper, we propose an OFDMA-based subcarrier pregrouping MAC protocol for UAWSNs, termed OSPG-MAC. To make it easier to allocate subcarriers and avoid conflict, we group all the subcarriers into fixed subchannels in advance and allocate them in terms of these subchannels. To maximize the total throughput on each subchannel, a bit and power allocation algorithm for the protocol is proposed, termed the OSPG-MAC algorithm. Simulation results show that the performance of OSPG-MAC is better than that of classic underwater MAC protocols, including SFAMA and T-Lohi.

Aμ-MAC: An Adaptive MAC Protocol for Wireless Sensor Networks

2010 ◽  
Vol 36 (1) ◽  
pp. 54-59 ◽  
Author(s):  
Lian-Hua GU ◽  
Liang-Lun CHENG ◽  
Quan-Min ZHU
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Mac Protocol ◽  
Wireless Sensor
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