A slotted CDMA protocol with BER scheduling for wireless multimedia networks
IEEE/ACM Transactions on Networking (TON)
Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
MC-CDMA Based IEEE 802.11 Wireless LAN
MASCOTS '04 Proceedings of the The IEEE Computer Society's 12th Annual International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunications Systems
Performance analysis of exponential backoff
IEEE/ACM Transactions on Networking (TON)
Comparison of Multichannel MAC Protocols
IEEE Transactions on Mobile Computing
THE ALOHA SYSTEM: another alternative for computer communications
AFIPS '70 (Fall) Proceedings of the November 17-19, 1970, fall joint computer conference
Retransmission Diversity in Large CDMA Random Access Systems
IEEE Transactions on Signal Processing - Part I
A novel random wireless packet multiple access method using CDMA
IEEE Transactions on Wireless Communications
Analyzing multi-channel medium access control schemes with ALOHA reservation
IEEE Transactions on Wireless Communications
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
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We propose a contention based MAC protocol which will extend traditional contention based single channel wireless network such as IEEE 802.11 distributed coordination function (DCF) to be used in multiple code channels DS-CDMA wireless networks. In particular, we assume the system exist a maximum allowable simultaneously transmissions M which is dependent on the degree of multiple access interference (MAI). To control the access of multiple code channels in DS-CDMA wireless network, we define the channel regulation (CR) which is smaller than M and three channel states which are random access (RA) state, CR state and busy state respectively. The channel is in RA state, CR state and busy state whenever simultaneously transmissions are smaller than CR, between CR and M and larger than M respectively. Nodes can randomly access channel whenever they detect RA state and do p-persistent transmission while CR state is detected. If channel is detected in busy state, nodes have to run backoff algorithm to prepare next time of transmission. The simulation results show that the proposed MAC protocol algorithm performs very well.