Paper Info
Title
Amplify-and-forward secondary spectrum access in multicarrier cognitive radio systems
Abstract
Innovative spectrum sharing policies, possibly leveraged by cognitive radio (CR) technologies, are expected to play a significant role in forthcoming 5G systems, employing multicarrier techniques for modulation and multiple-access. In this paper, we propose an opportunistic amplify-and-forward relaying scheme for a multicarrier CR network, where a secondary user (SU) is allowed to share communication resources with a primary user (PU) transmitting with orthogonal frequency-division multiplexing (OFDM) technology. Instead of minimizing the interference to the PU, the SU transmitter relays the received PU signal on the different OFDM subcarriers by using a precoding matrix depending on the symbols that must be delivered to the SU receiver. The information-theoretic capacity of the proposed protocol is assessed, showing that, under mild conditions, the SU can gain a significant data-rate performance, while not degrading (but even improving) the PU performance.
Year
DOI
Venue
2015
10.1109/IWMN.2015.7322992
2015 IEEE International Workshop on Measurements & Networking (M&N)
Keywords
Field
DocType
amplify-and-forward secondary spectrum access,multicarrier cognitive radio system,innovative spectrum sharing policy,5G system,OFDM modulation,OFDM multiple access,opportunistic amplify-and-forward relaying scheme,communication resources share,primary user,orthogonal frequency-division multiplexing technology,OFDM subcarrier,secondary user transmitter relay,precoding matrix,secondary user receiver,protocol information-theoretic capacity
Frequency domain,Transmitter,Computer network,Modulation,Electronic engineering,Interference (wave propagation),Engineering,Spectrum sharing,Multiplexing,Orthogonal frequency-division multiplexing,Cognitive radio
Conference
Citations 
PageRank 
References 
1
0.35
16
Authors
3
Name
Order
Citations
PageRank
Donatella Darsena118217.78
Giacinto Gelli221122.46
Francesco Verde325424.42