Opportunistic carrier sensing for energy-efficient information retrieval in sensor networks
EURASIP Journal on Wireless Communications and Networking - Special issue on advanced signal processing algorithms for wireless communications
EURASIP Journal on Wireless Communications and Networking
Sensitivity and Coding of Opportunistic ALOHA in Sensor Networks with Mobile Access
Journal of VLSI Signal Processing Systems
Generalized model for scheduling in MIMO multiple access systems: a cross-layer approach
Signal Processing - Special section: Advances in signal processing-assisted cross-layer designs
Distributed opportunistic scheduling for ad-hoc communications: an optimal stopping approach
Proceedings of the 8th ACM international symposium on Mobile ad hoc networking and computing
Noncooperative power control and transmission scheduling in wireless collision channels
SIGMETRICS '08 Proceedings of the 2008 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
A multigroup priority queueing MAC protocol for wireless networks with multipacket reception
EURASIP Journal on Wireless Communications and Networking - Intelligent Systems for Future Generation Wireless Networks
Wireless networks with retransmission diversity and carrier-sense multiple access
IEEE Transactions on Signal Processing
Fast multiple access selection through variable power transmissions
IEEE Transactions on Wireless Communications
PHY-aware distributed scheduling for ad hoc communications with physical interference model
IEEE Transactions on Wireless Communications
Dual power multiple access with multipacket reception using local CSI
IEEE Transactions on Wireless Communications
IEEE Transactions on Information Theory
Distributed opportunistic communication protocol for wireless multihop networks
International Journal of Mobile Network Design and Innovation
Distributed adaptive algorithms for optimal opportunistic medium access
WiOPT'09 Proceedings of the 7th international conference on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks
Decentralized optimization for multichannel random access
IEEE Transactions on Communications
A distributed opportunistic access scheme and its application to OFDMA systems
IEEE Transactions on Communications
Transmission control with imperfect CSI in channel-aware slotted ALOHA networks
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
IEEE Transactions on Signal Processing
Analytical throughput for the channel MAC paradigm
MSN'07 Proceedings of the 3rd international conference on Mobile ad-hoc and sensor networks
APCC'09 Proceedings of the 15th Asia-Pacific conference on Communications
Channel aware distributed random access
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Transmission control with imperfect CSI in channel-aware slotted ALOHA networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Distributed multi-user scheduling for improving throughput of wireless LAN
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Monotonicity of constrained optimal transmission policies in correlated fading channels with ARQ
IEEE Transactions on Signal Processing
On exploiting idle channels in opportunistic multichannel ALOHA
IEEE Communications Letters
Opportunistic multi-channel CSMA protocol for OFDMA systems
IEEE Transactions on Wireless Communications
On queueing and multilayer coding
IEEE Transactions on Information Theory
Exploiting cooperative advantages in slotted ALOHA random access networks
IEEE Transactions on Information Theory
Distributed Adaptive Algorithms for Optimal Opportunistic Medium Access
Mobile Networks and Applications
Channel-aware distributed medium access control
IEEE/ACM Transactions on Networking (TON)
Proceedings of the second ACM international symposium on Design and analysis of intelligent vehicular networks and applications
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We study the use of channel state information (CSI) for random access in fading channels. Traditionally, random access protocols have been designed by assuming simple models for the physical layer where all users are symmetric, and there is no notion of channel state. We introduce a reception model that takes into account the channel states of various users. Under the assumption that each user has access to its CSI, we propose a variant of Slotted ALOHA protocol for medium access control, where the transmission probability is allowed to be a function of the CSI. The function is called the transmission control. Assuming the finite user infinite buffer model we derive expressions for the maximum stable throughput of the system. We introduce the notion of asymptotic stable throughput (AST) that is the maximum stable throughput as the number of users goes to infinity. We consider two types of transmission control, namely, population-independent transmission control (PITC), where the transmission control is not a function of the size of the network and population-dependent transmission control (PDTC), where the transmission control is a function of the size of the network. We obtain expressions for the AST achievable with PITC. For PDTC, we introduce a particular transmission control that can potentially lead to significant gains in AST. For both PITC and PDTC, we show that the effect of transmission control is equivalent to changing the probability distribution of the channel state. The theory is then applied to code-division multiple-access (CDMA) networks with linear minimum mean-square error (LMMSE) receivers and matched filters (MF) to illustrate the effectiveness of using channel state. It is shown that through the use of channel state, with arbitrarily small power, it is possible to achieve an AST that is lower-bounded by the spreading gain of the network. This result has implications for the reachback problem in large sensor networks.