Abstract: In this paper, a novel tunnel field effect transistor (TFET) is introduced, thatdue to its superior gate controllability, can be considered as a promising candidate forthe conventional TFET. The proposed electrically doped heterojunction TFET(EDHJTFET) has a 3D core-shell nanotube structure with external and internal gatessurrounding the channel that employs el...

.........................................................................................................................................................................1 Roadside Drainage Design for Channel Stability ..........................................................................................................2 Allowable Velocity and Shear Stress.......................................

This letter proposes a method to design a vector quantizer (VQ) for robust performance under noisy channel conditions. By re-optimizing the quantizer at progressively lower levels of assumed channel noise, the design is less susceptible to poor local optima. The method is applied to: 1) channel-optimized VQ design; and 2) index assignment for a source-optimized VQ. For both problems, we demonst...

The Filtered Multitone (FMT) modulation requires both equalization of the transmission channel and of the transmit subchannel filters. Since decision feedback equalization is affected by error propagation and yields a greater complexity when combined with coding, in this paper we consider the use of pre-coding for FMT. However, by observing that precoding disrupts partially the subchannel ortho...

ETRI Journal, Volume 26, Number 6, December 2004 In this paper, we discuss the design problem and the robustness of space-frequency trellis codes (SFTCs) for multiple input multiple output, orthogonal frequency division multiplexing (MIMO-OFDM) systems. We find that the channel constructed by the consecutive subcarriers of an OFDM block is a correlated fading channel with the regular correlatio...

Abstract— The Ocean is a dynamic and complex environment; it is a very complicated transmission channel that can change rapidly with the environmental conditions. Hence, to avoid failure of underwater monitoring missions, it’s crucial to predict the behavior of underwater acoustic channel. In this paper, several fundamental key aspects of underwater acoustic channel are investigated. A model ch...

The problem of training symbol placement and power for the channel estimation of OFDM over block-fading channel in the presence of null subcarriers is considered. We use convex optimization techniques to find a pilot design that results in near-optimal channel estimation. We design OFDM preamble and then, based on the obtained preambles, we design pilot symbols and their placements for pilot ai...

To account for nonstationarity, channel characterization and system design methods that employ the non-widesense stationary uncorrelated scattering (non-WSSUS) assumption are desirable. Furthermore, the inadequacy of the Doppler shift operator to properly account for the frequency shift in wideband channel implies that the timefrequency characterization methods that employ the Doppler shift ope...