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Title: A MAC protocol based on a S-ALOHA/overlapped CDMA system supporting multirate applications
Authors: Raad, Robert
Inaty, Elie 
Affiliations: Department of Electrical Engineering 
Department of Electrical Engineering 
Keywords: Slotted ALOHA
Overlapped CDMA
Variable bit rate
Issue Date: 2006
Publisher: IEEE
Part of: VTC-2005-Fall. 2005 IEEE 62nd Vehicular Technology Conference, 2005.
Start page: 2073
End page: 2076
Conference: VTC-2005-Fall 2005 IEEE 62nd Vehicular Technology Conference (28 September 2005 : Dallas, TX, USA) 
In this paper, we propose a new multirate network based on a hybrid Slotted-ALOHA/Overlapped CDMA (SALOHA/O-CDMA) system as an effective way of integrating multirate traffic. The key issue in this proposal is to exploit the potential of the overlapped CDMA (O-CDMA) when jointly used with the S-ALOHA protocol in a link layer. The newly proposed system is modeled using general Markov chain from which both the system throughput and the average delay are derived. Our system is then compared to the classical S-ALOHA/variable processing gain (VPG) CDMA (S-ALOHA/VPG-CDMA) system. Finally, system stability passing through general finite user model is also envisaged. Numerical results show that our system outperforms the latter.
Ezproxy URL: Link to full text
Type: Conference Paper
Appears in Collections:Department of Electrical Engineering

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