Leveraging multi-carrier access offers a promising approach to boosting access quality in mobile networks. However, our experiments show that the potential benefits are hard to fu lfill due to fundamental limitations in the network-controlled design. To overcome these limitations, we propose iCellular, which allows users to define and intelligently select their own cellu lar network access from...

The state of the art in self-consistent numerical modeling of semiconductor devices is reviewed. The physical assumptions which are required to describe carrier transport are discussed. Particular emphasis is put on the models for space charge, carrier mobility, carrier temperature, and carrier generationrecombination. Investigations about three-dimensional effects due to the field oxide in MOS...

Carrier-specific suppressor T cells can suppress antibody secretion by high avidity IgG plaque-forming cells (PFC) within 90 min in vitro. This process can be blocked by the inclusion of soluble carrier in the cell mixture or by the exposure of target cells to anti-carrier antibodies or pronase. Moreover, suppression can be augmented by PFC exposure to the soluble hapten-carrier conjugate. Fina...

19S and 7S memory is analyzed in a system of cooperating antigenic determinants. Cooperation occurs in the induction of both 19S and 7S secondary antibodies, and for both responses carrier specificity can be entirely accounted for by presensitization of the animal to carrier determinants. The class distribution of secondary anti-hapten antibody depends on the dose of the hapten primary-carrier ...

We present LoRea an architecture consisting of a backscatter tag, a reader and multiple carrier generators that overcomes the power, cost and range limitations of existing backscatter systems such as Computational Radio Frequency Identification (CRFID). LoRea achieves this by: First, generating narrow-band backscatter transmissions. Second, by mitigating self-interference without the complex de...

Even though capacity can be achieved in parallel multiple-input multiple-output (MIMO) broadcast channels by coding separately on each carrier, joint coding across carriers (socalled carrier-cooperative transmission) can lead to performance gains in MIMO broadcast channels with a restriction to linear transceivers. In principle, carrier-cooperative transmission can be optimized in an equivalent...