A performance comparison for the 64-bit block cipher (Triple-DES, IDEA, CAST-128, MISTY1, and KHAZAD) FPGA hardware implementations is given in this paper. All these ciphers are under consideration from the ISO/IEC 18033-3 standard in order to provide an international encryption standard for the 64-bit block ciphers. Two basic architectures are implemented for each cipher. For the non-feedback ...

During the last years, multiple-input multiple-output (MIMO) technology has attracted great attentions in the area of wireless communications. The hardware implementation of MIMO decoders becomes a challenging task as the complexity of the MIMO system increases. This thesis presents hardware/software co-design architecture and implementations of two typical lattice decoding algorithms, includin...

Abstract — Performance of parallel applications on networks of workstations can be different from that on a parallel machine. Therefore, it is important to understand the factors that influence the performance of parallel applications on this type of systems. To gain this understanding, we study the performance of a matrix multiplication application on a NOW-based system that uses the PVM. We h...

Long Term Evolution (LTE) is the next step towards in the arena of 3G cellular wireless services. Expected in the 2008 time frame, it is a 3GPP standard which provides an uplink transmission rate of up to 50 megabits per second (Mbps) and a downlink transmission rate of up to 100 Mbps. LTE evolved from an early 3GPP wireless standard identified as Universal Mobile Telecommunication System (UMTS...

Vehicle-to-vehicle (V2V) communication is a technology that can wirelessly exchange information on the speed and position of nearby vehicles, helping to avoid collisions, alleviate traffic congestion, improve environment. The 3rd Generation Partnership Project (3GPP) has specified methods reliability V2V sidelink (SL) by implementing hybrid automatic repeat request (HARQ) in casting strategy co...

Privacy amplification (PA) is an essential part in a quantum key distribution (QKD) system, distilling highly secure from partially string by public negotiation between two parties. The optimization objectives of privacy for QKD are large block size, high throughput and low cost. For the global these objectives, novel algorithm proposed this paper combining multilinear-modular-hashing modular a...

Long Term Evolution is designed to have wider channels up to 20MHz, with low latency and packet optimized radio access technology. The peak data rate envisaged for LTE is 100 Mbps in downlink and 50 Mbps in the uplink. Unfortunately, different constraints have a strong influence on system performance such as the velocity of user equipment and effect of multipath channel. To achieve data rate co...

A runtime reconfigurable architecture for high speed Viterbi and Turbo decoding is designed and implemented on an FPGA. The architecture can be reconfigured to decode a range of convolutionally coded data with constraint lengths varying from 3 to 9, rates 1/2 and 1/3, and various generator polynomials. It can also be reconfigured to decode Turbo coded data with constraint length 4 and rate 1/3....

ABSTRACT We have developed an image-sensor-based optical receiver for free-space optical communications. In our scheme, each pixel has a function of an optical receiver as well as an image sensor. The functional mode can be selected pixel by pixel. The position of a communication target is detected from the image captured in the image sensor mode. Then, functional mode of the pixel receiving op...

Small RNAs are central players in RNA silencing, yet their cytoplasmic compartmentalization and the effects it may have on their activities have not been studied at the genomic scale. Here we report that Arabidopsis microRNAs (miRNAs) and small interfering RNAs (siRNAs) are distinctly partitioned between the endoplasmic reticulum (ER) and cytosol. All miRNAs are associated with membrane-bound p...