TY - GEN
T1 - Cognitive relaying and opportunistic spectrum sensing in unlicensed multiple access channels
AU - Gambini, Jonathan
AU - Simeone, Osvaldo
AU - Spagnolini, Umberto
PY - 2008
Y1 - 2008
N2 - In this paper, a cognitive multiple access channel with one primary node and M secondary nodes is considered, and the impact of the following techniques on the stability region of the system is investigated: (i) relaying by the secondary nodes of the primary traffic (cognitive relaying); (ii) opportunistic spectrum sensing at the secondary nodes. Specifically, inner bounds on the stability region of the system for the case of M = 2 secondary nodes are derived by assuming cognitive relaying and both simultaneous and opportunistic spectrum sensing at the secondary nodes. The analysis is carried out by defining convenient systems which statistically dominate the original ones (dominant systems). Numerical results provide insight into the performance advantages of the different strategies in terms of stability region.
AB - In this paper, a cognitive multiple access channel with one primary node and M secondary nodes is considered, and the impact of the following techniques on the stability region of the system is investigated: (i) relaying by the secondary nodes of the primary traffic (cognitive relaying); (ii) opportunistic spectrum sensing at the secondary nodes. Specifically, inner bounds on the stability region of the system for the case of M = 2 secondary nodes are derived by assuming cognitive relaying and both simultaneous and opportunistic spectrum sensing at the secondary nodes. The analysis is carried out by defining convenient systems which statistically dominate the original ones (dominant systems). Numerical results provide insight into the performance advantages of the different strategies in terms of stability region.
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U2 - 10.1109/ISSSTA.2008.74
DO - 10.1109/ISSSTA.2008.74
M3 - Conference contribution
AN - SCOPUS:57849165831
SN - 9781424422043
T3 - IEEE International Symposium on Spread Spectrum Techniques and Applications
SP - 371
EP - 375
BT - 2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications - Proceedings, ISSSTA2008
T2 - 2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications, ISSSTA2008
Y2 - 25 August 2008 through 28 August 2008
ER -