Dynamic channel selection method for direct spectrum division transmission in CSMA systems
- Resource Type
- Conference
- Authors
- Murayama, Daisuke; Nakahira, Katsuya; Morikura, Masahiro
- Source
- 2015 21st Asia-Pacific Conference on Communications (APCC) Communications (APCC), 2015 21st Asia-Pacific Conference on. :380-385 Oct, 2015
- Subject
- Aerospace
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Photonics and Electrooptics
Signal Processing and Analysis
Bandwidth
Time-frequency analysis
Proposals
Throughput
Frequency conversion
Wireless communication
Computational modeling
- Language
This paper proposes a dynamic channel selection method for direct spectrum division transmission systems, which are autonomous decentralized control systems like CSMA/CA systems, in order to use frequency resources efficiently. In the method each terminal monitors the usage status of the whole system bandwidth, then searches for and memorizes all combinations of currently vacant channels. When the terminal transmits data it selects the combination having the lowest occupancy rate for the transmission. The method's effectiveness was confirmed in discrete event simulations with probabilistic resource sharing between terminals. The aggregate throughput improvement compared with simple random selection achieved in the simulations ranged between 2.5% and 11%.