Optimal precoder design for non-regenerative multiple-input multiple-output cognitive relay systems with perfect and imperfect channel state information

• Published in: Wireless communications and mobile computing Vol. 15; no. 8; pp. 1213 - 1224
• Main Authors: Li, Quanzhong, Luo, Liping, Qin, Jiayin
• Format: Journal Article
• Language: English
• Published: Oxford Blackwell Publishing Ltd 10.06.2015; John Wiley & Sons, Inc
• Subjects: Algorithms; Channels; cognitive radio; Design engineering; Interference; Mathematical models; MIMO; non-regenerative relay; Optimization; perfect and imperfect CSI; Plutonium; precoder; Relay systems

This paper studies optimal precoder design for non‐regenerative multiple‐input multiple‐output (MIMO) cognitive relay systems, where the secondary user (SU) and relay station (RS) share the same spectrum with the primary user (PU). We aim to maximize the system capacity subject to the transmit power...