120 search results - page 1 / 24 » Spectrum Allocation in Two-Tier Networks |
CORR
2008
Springer
13 years 3 months ago
2008
Springer
Abstract-- Two-tier networks, comprising a conventional cellular network overlaid with shorter range hotspots (e.g. femtocells, distributed antennas, or wired relays), offer an eco...
SECON
2010
IEEE
13 years 2 months ago
2010
IEEE
Market mechanisms have been exploited as important means for spectrum acquisition and access in cognitive radio networks. In this paper, we propose a two-tier market for decentrali...
WICON
2008
13 years 6 months ago
2008
Demand-driven spectrum allocation can drastically improve performance for WiFi access points struggling under increasing user demands. While their frequency agility makes cognitive...
INFOCOM
2012
IEEE
11 years 7 months ago
2012
IEEE
Cognitive radio (CR) techniques improve the spectrum utilization by exploiting temporarily-free frequency bands (i.e., in the time domain). The spectrum utilization can be boosted...
INFOCOM
2012
IEEE
11 years 7 months ago
2012
IEEE
—In this paper we study the resource allocation in OFDM-based cognitive radio (CR) networks, under the consideration of many practical limitations such as imperfect spectrum sens...