TY - GEN
T1 - On the performance limits of cognitive MIMO channels
AU - Akin, Sami
AU - Gursoy, Mustafa Cenk
PY - 2011
Y1 - 2011
N2 - In this paper, throughput of cognitive multiple-input multiple-output (MIMO) systems operating under quality-of-service (QoS) constraints is studied. It is assumed that transmission power and the covariance of the input signal vector are varied depending on the sensed activities of primary users in the system. Considering the reliability of the transmission and channel sensing results, a state-transition model is provided. Effective capacity is determined, and expressions for the first and second derivatives of the effective capacity are obtained at SNR = 0. The minimum bit energy requirements in the presence of QoS limitations are identified. Numerical results are provided.
AB - In this paper, throughput of cognitive multiple-input multiple-output (MIMO) systems operating under quality-of-service (QoS) constraints is studied. It is assumed that transmission power and the covariance of the input signal vector are varied depending on the sensed activities of primary users in the system. Considering the reliability of the transmission and channel sensing results, a state-transition model is provided. Effective capacity is determined, and expressions for the first and second derivatives of the effective capacity are obtained at SNR = 0. The minimum bit energy requirements in the presence of QoS limitations are identified. Numerical results are provided.
UR - http://www.scopus.com/inward/record.url?scp=79959301206&partnerID=8YFLogxK
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U2 - 10.1109/WCNC.2011.5779381
DO - 10.1109/WCNC.2011.5779381
M3 - Conference contribution
AN - SCOPUS:79959301206
SN - 9781612842547
T3 - 2011 IEEE Wireless Communications and Networking Conference, WCNC 2011
SP - 1640
EP - 1645
BT - 2011 IEEE Wireless Communications and Networking Conference, WCNC 2011
T2 - 2011 IEEE Wireless Communications and Networking Conference, WCNC 2011
Y2 - 28 March 2011 through 31 March 2011
ER -