5G New Radio (NR) is expected to support new ultra-reliable low-latency communication (URLLC) service targeting at supporting the small packets transmissions with very stringent latency and reliability requirements. Current Long Term Evolution (LTE) system has been designed based on grant-based (GB) (i.e., dynamic grant) random access, which can hardly URLLC Grant-free (GF) configured access pr...

In this contribution we focus on the physical layer of UMTS Long Term Evolution (LTE) and propose an alternative transceiver concept which might be considered for further extensions of the standard. A simple repetition code is combined with a complex mapper with bit doping resulting in a BitInterleaved Coded Modulation with Iterative Decoding (BICM-ID) scheme. Allowing feed-back based multiple ...

We present a new, misuse-resistant scheme for online authenticated encryption, following the framework set forth by Fleischmann et al. (FSE 2012). Our scheme, COBRA, is roughly as efficient as the GCM mode of operation for nonce-based authenticated encryption, performing one block cipher call plus one finite field multiplication per message block in a parallelizable way. The major difference fr...

The temporal jerkiness removal for the H.263/H.263+ video conferencing system is the main object of this research. We proposed a fast block-based motion-compensated frame interpolation (FMCI) scheme which does not require any motion search in the decoder end, and therefore the complexity is low enough for achieving the real-time frame rate increase. In order to further improve the visual qualit...

We address the problem of massive random access for an uncoordinated Gaussian multiple access channel (MAC). The performance of T-fold irregular repetition slotted ALOHA (IRSA) scheme for this channel is investigated. The main difference of this scheme in comparison to IRSA is as follows: any collisions of order up to T can be resolved with some probability of error introduced by Gaussian noise...

Noisy network coding is recently proposed for the general multi-source network by Lim, Kim, El Gamal and Chung. This scheme builds on compress-forward (CF) relaying but involves three new ideas, namely no Wyner-Ziv binning, relaxed simultaneous decoding and message repetition. In this paper, using the two-way relay channel as the underlining example, we analyze the impact of each of these ideas...

one of the methods to recognize national background and roots, also to maintain historical and cultural nature is to study different dimensions of physical, martial and athletic activities in ancient iran. the aim of the present study was to identify different sport fields and equipment in ancient iran using content analysis of nine versions of ferdowsi’s “shahnameh” and related literature. als...

The purpose of the present study was to develop a repetition-load scheme for the eccentric-only bench press exercise. Nine resistance trained men (age: 21.6 ± 1.0 years; 1-repetition maximum [RM] bench press: 137.7 ± 30.4 kg) attended four testing sessions during a four week period. During the first session each subject’s 1-RM bench press load utilizing the stretch-shortening cycle was determin...

We report on a mid-infrared fiber laser that uses single-walled carbon nanotube saturable absorber mirror to realize the mode-locking operation. The generates 3.5 µm ultra-short pulses from an erbium-doped fluoride by utilizing dual-wavelength pumping scheme. Stable is achieved at band with repetition rate of 25.2 MHz. maximum average power acquired in regime 25 mW. experimental results indicat...