Title
Optimal linear precoding for opportunistic spectrum sharing under arbitrary input distributions assumption.
Abstract
Cognitive radio network with multiple-input multiple-output is an effective method to improve not only spectrum efficiency, but also energy efficiency. In this article, a linear precoding matrix optimization algorithm, named gradient-aided mutual information optimization (GAMIO), is designed to maximize the secondary users' spectrum efficiency. Unlike the previous algorithms which were developed under a specific input assumption, the GAMIO algorithm can work without imposing any input assumption. Furthermore, a framework is also proposed to develop the energy-efficient algorithm which can work with arbitrary spectrum-efficient algorithm. In this way, an energy-efficient algorithm, which can work under arbitrary input assumption, be developed based on the GAMIO algorithm (EEGAMIO). Numerical results indicate that either the GAMIO algorithm or the EEGAMIO algorithm shows the best performance at the present time.
Year
DOI
Venue
2013
10.1186/1687-6180-2013-59
EURASIP JOURNAL ON ADVANCES IN SIGNAL PROCESSING
Field
DocType
Volume
Mathematical optimization,Computer science,Efficient energy use,Effective method,Mutual information,Artificial intelligence,Spectral efficiency,Channel capacity,Precoding,Machine learning,Cognitive radio,Channel state information
Journal
2013
Issue
ISSN
Citations 
1
1687-6180
8
PageRank 
References 
Authors
0.44
17
5
Name
Order
Citations
PageRank
Rui Zhu1167.74
Yifei Zhao2947.61
Yunzhou Li334536.62
Jing Wang41038105.16
Hao Hong580.44