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|Title:||Robust designs for MISO-based cognitive radio networks with primary user's partial channel state information|
|Citation:||Zhangt, L., Liang, Y.-C., Xin, Y. (2008). Robust designs for MISO-based cognitive radio networks with primary user's partial channel state information. GLOBECOM - IEEE Global Telecommunications Conference : 4386-4390. ScholarBank@NUS Repository. https://doi.org/10.1109/GLOCOM.2008.ECP.841|
|Abstract:||Cognitive radio is an emerging technology improving the spectrum utilization efficiency in communication systems. In this paper, we are interested in a multiple-input single-output (MISO) based cognitive radio (CR) network where the secondary user (SU) shares the same frequency band with the primary user (PU). It is assumed that the SU transmitter (SU-Tx) has perfect channel information (CSI) from SU-Tx to SU receiver (SU-Rx), but partial CSI from SU-Tx to PU receiver. We propose a robust design method to determine the optimal transmission covariance of SU-Tx to maximize the rate of the SU while keeping the interference power to the PU less than a threshold with high probability. This problem is formulated as a semi-infinite programming (SIP) problem. Two algorithms are proposed to transform this SIP problem into a finite constraint problem, and it is shown that these algorithms obtain the optimal solution. Simulations are presented to validate the effectiveness of the proposed algorithms. © 2008 IEEE.|
|Source Title:||GLOBECOM - IEEE Global Telecommunications Conference|
|Appears in Collections:||Staff Publications|
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