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TWC
2008
159views more  TWC 2008»
13 years 8 months ago
Resource allocation for spectrum underlay in cognitive radio networks
A resource allocation framework is presented for spectrum underlay in cognitive radio networks. We consider both interference constraints for primary users and quality of service (...
Long Bao Le, Ekram Hossain
SECON
2008
IEEE
14 years 2 months ago
Per User Throughput in Large Wireless Networks
— Previous results show that a node’s throughput scales poorly as the network size increases when every node has traffic. However, in many cases, only a fraction of nodes in l...
Dan Xu, Xin Liu
MOBICOM
2009
ACM
14 years 3 months ago
Impact of mobility on spectrum sensing in cognitive radio networks
In cognitive radio networks (CRNs), spectrum sensing is key to opportunistic spectrum access while preventing any unacceptable interference to primary users’ communications. Alt...
Alexander W. Min, Kang G. Shin
CORR
2008
Springer
155views Education» more  CORR 2008»
13 years 8 months ago
Weighted Sum Rate Optimization for Cognitive Radio MIMO Broadcast Channels
In this paper, we consider a cognitive radio (CR) network in which the unlicensed (secondary) users are allowed to concurrently access the spectrum allocated to the licensed (prim...
Lan Zhang, Yan Xin, Ying-Chang Liang
CORR
2010
Springer
186views Education» more  CORR 2010»
13 years 8 months ago
Cooperative Sequential Spectrum Sensing Algorithms for OFDM
This paper considers the problem of spectrum sensing in cognitive radio networks when the primary user is using Orthogonal Frequency Division Multiplexing (OFDM). For this we devel...
ArunKumar Jayaprakasam, Vinod Sharma, Chandra R. M...