3733 search results - page 461 / 747 » Logics of communication and change |
170
click to vote
ICC
2007
IEEE
16 years 1 months ago
2007
IEEE
— This paper proposes an adaptive radio resource allocation (ARRA) algorithm for downlink OFDMA/SDMA systems with multimedia traffic. Considering multiple service classes and di...
206
click to vote
ICC
2007
IEEE
16 years 1 months ago
2007
IEEE
— This paper presents an architecture for adaptive cognitive radio networks based on the concept of a “global control plane”. The proposed control architecture uses a predete...
199
click to vote
ICC
2007
IEEE
16 years 1 months ago
2007
IEEE
— Key management has long been a challenging problem in wireless Distributed Sensor Networks (DSNs) due to their high security requirements and strict resource constraints. Recen...
195
click to vote
ICC
2007
IEEE
16 years 1 months ago
2007
IEEE
— We consider a point-to-multipoint cognitive radio network that shares a set of channels with a primary network. Within the cognitive radio network, a base station (BS) controls...
121
click to vote
ICC
2007
IEEE
16 years 1 months ago
2007
IEEE
—In this paper, we study a new family of carrier-hopping prime codes (CHPCs), so-called quadraticcongruence CHPC (QC-CHPC), with expanded code cardinality by relaxing the maximum...