5752 search results - page 990 / 1151 » Informative Labeling Schemes |
ICC
2007
IEEE
14 years 4 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...
ICC
2007
IEEE
14 years 4 months ago
2007
IEEE
— This paper deals with a system level design solution to support information gathering in the presence of a mobile querying node that experiences frequent disconnections from a ...
ICC
2007
IEEE
14 years 4 months ago
2007
IEEE
Abstract—In this paper we propose a low complexity frequency domain channel estimator for pilot-symbol-assisted (PSA) orthogonal frequency division multiplexing (OFDM) systems in...
ICC
2007
IEEE
14 years 4 months ago
2007
IEEE
— In multiuser systems, multiuser diversity gains can be achieved by assigning channels to users with higher channel quality. To avoid the extensive information exchange required...
ICC
2007
IEEE
14 years 4 months ago
2007
IEEE
—Peak-to-average power ratio (PAR) reduction in OFDM using antenna arrays (MIMO OFDM) is considered. In particular, generalizations of selected mapping (SLM) recently proposed in...