375 search results - page 2 / 75 » Accessible Capacity of Secondary Users |
ICC
2009
IEEE
14 years 27 days ago
2009
IEEE
—In this paper, quality of service (QoS) provisioning for voice service over cognitive radio networks is considered. As voice traffic is sensitive to delay, the presence of prim...
JCM
2007
13 years 6 months ago
2007
— Spectrum scarcity is becoming a major issue for service providers interested in either deploying new services or enhancing the capacity for existing applications. On the other ...
TMC
2010
13 years 4 months ago
2010
—In this paper, we analyze the achievable capacity of the secondary service for overlay and underlay access strategies. We then propose a novel mixed access strategy in which in ...
ICASSP
2011
IEEE
12 years 10 months ago
2011
IEEE
The problem of distributed multiuser medium access of a hierarchical cognitive radio network with multiple primary and secondary users is considered. Each primary user has a licen...
NTMS
2009
IEEE
14 years 26 days ago
2009
IEEE
—Inter-cell interference (ICI) mitigation is always a big challenge issue in cellular systems. In this work we propose an Enhanced Fractional Frequency Reuse (EFFR) scheme combin...