Wang, Y., Xu, W., Yang, K. and Lin, J. (2012) Optimal Energy-Efficient Power Allocation for OFDM-Based Cognitive Radio Networks. IEEE Communications Letters, 16, 1420-1423.
http://dx.doi.org/10.1109/lcomm.2012.070512.120662

has been cited by the following article:

• TITLE: Hybrid Relaying Protocol for Joint Power and Subcarrier Allocation for OFDM Based Cognitive Radio Networks

  AUTHORS: Muthusamy Bhuvaneswari, Shama Srinivasa Rao Madane

  KEYWORDS: Orthogonal Frequency Division Multiplexing, Interference, Relay, Power, Amplify and Forward, Decode and Forward, Greedy Algorithm

  JOURNAL NAME: Circuits and Systems, Vol.7 No.10, August 23, 2016

  ABSTRACT: This paper aims to avoid the interference imposed by the secondary user on a primary user in Cognitive Radio Network (CRN). In CRN, the interference from secondary user enforced on primary user mainly depends on spectral interval between primary and secondary systems. Moreover, it also depends on the power allocated to the secondary user. In order to avoid interference imposed by secondary user on primary user, a Hybrid Relaying Protocol for Joint Power and Subcarrier Allocation for Orthogonal Frequency Division Multiplexing (OFDM) based Cognitive Radio Networks is proposed. In hybrid relaying protocol, a secondary user uses amplify and forward (AF) protocol and decode and forward (DF) protocol based on the requirement to maximize network throughput. A greedy algorithm is proposed for the selection of relay to get the optimal solution. Moreover, an efficient hybrid power and subcarrier algorithm is used by considering interference constraint imposed by cognitive network to the primary user.