Please use this identifier to cite or link to this item: https://doi.org/10.1109/CROWNCOM.2008.4562464
Title: Optimal transmission strategy for cognitive radio networks with partial channel state information
Authors: Zhang, L.
Liang, Y.-C.
Xin, Y. 
Issue Date: 2008
Source: Zhang, L.,Liang, Y.-C.,Xin, Y. (2008). Optimal transmission strategy for cognitive radio networks with partial channel state information. Proceedings of the 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CrownCom 2008 : -. ScholarBank@NUS Repository. https://doi.org/10.1109/CROWNCOM.2008.4562464
Abstract: In this paper, we consider a spectrum sharing based cognitive radio (CR) network where the secondary user (SU) coexists with the primary user (PU) as long as the interference power received by the PU is less than a acceptable threshold. Suppose that the SU's transmitter and receiver are equipped with multiple antennas and the PU's receiver are equipped with single receive antenna. We assume that the SU's channel state information (CSI) is known at the SU transmitter perfectly, however, due to less cooperation between the SU and the PU, only partial CSI between SU and PU is available at the SU transmitter. We seek to determine the optimal transmit signal covariance to maximize the transmission rate of the SU where the covariance is subject to the average interference power constraint of the PU as well as the transmit power constraint of the SU transmitter. Two iterative algorithms are proposed to solve these problems, and it is shown that the algorithms can converge to the optimal solution. Simulation results are provided to show the effectiveness of the algorithms.
Source Title: Proceedings of the 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CrownCom 2008
URI: http://scholarbank.nus.edu.sg/handle/10635/71311
ISBN: 9781424423026
DOI: 10.1109/CROWNCOM.2008.4562464
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