TY - GEN
T1 - On the performance of spectrum sharing systems with multiple antennas
AU - Yang, Liang
AU - Alouini, Mohamed-Slim
AU - Qaraqe, Khalid A.
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2012
Y1 - 2012
N2 - In this paper, we study the capacity of spectrum sharing (SS) multiple-input multiple-output (MIMO) systems over Rayleigh fading channels. More specifically, we present closed-form capacity formulas for such systems with and without optimal power and rate adaptation. A lower bound on the capacity is also derived to characterize the scaling law of the capacity. Results show that increasing the number of antennas has a negative effect on the system capacity in the low signal-to-noise (SNR) regime and the scaling law at high SNR is similar to the conventional MIMO systems. In addition, a lower bound on the capacity of the SS keyhole MIMO channels is analyzed. We also present a capacity analysis of SS MIMO maximal ratio combining (MRC) systems and the results show that the capacity of such systems always decreases with the increase of the number of antennas. Numerical results are finally given to illustrate our analysis. © 2012 ICST.
AB - In this paper, we study the capacity of spectrum sharing (SS) multiple-input multiple-output (MIMO) systems over Rayleigh fading channels. More specifically, we present closed-form capacity formulas for such systems with and without optimal power and rate adaptation. A lower bound on the capacity is also derived to characterize the scaling law of the capacity. Results show that increasing the number of antennas has a negative effect on the system capacity in the low signal-to-noise (SNR) regime and the scaling law at high SNR is similar to the conventional MIMO systems. In addition, a lower bound on the capacity of the SS keyhole MIMO channels is analyzed. We also present a capacity analysis of SS MIMO maximal ratio combining (MRC) systems and the results show that the capacity of such systems always decreases with the increase of the number of antennas. Numerical results are finally given to illustrate our analysis. © 2012 ICST.
UR - http://hdl.handle.net/10754/564501
UR - http://eudl.eu/doi/10.4108/icst.crowncom.2012.249480
UR - http://www.scopus.com/inward/record.url?scp=84869478956&partnerID=8YFLogxK
U2 - 10.4108/icst.crowncom.2012.249480
DO - 10.4108/icst.crowncom.2012.249480
M3 - Conference contribution
SN - 9781936968558
SP - 101
EP - 105
BT - Proceedings of the 7th International Conference on Cognitive Radio Oriented Wireless Networks
PB - European Alliance for Innovation n.o.
ER -