We show how to design a modulation and error correcting code (ECC) to achieve near-capacity performance on a deep space optical link. We begin by comparing the capacity of various modulations, given the power and bandwidth constraints of the channel and show that pulse position modulation (PPM) is near-optimal for a nominal mission scenario to Mars. We present a coded PPM solution comprised of ...

Coded distributed computing introduced by Li et al. in 2015 is an efficient approach to trade computing power to reduce the communication load in general distributed computing frameworks such as MapReduce. In particular, Li et al. show that increasing the computation load in the Map phase by a factor of r can create coded multicasting opportunities to reduce the communication load in the Reduce...

In this paper, we present a novel design criterion for low-density parity-check (LDPC)-coded modulations based on the concatenation of an LDPC code with a coded modulator (CM) tailored for the specific transmission channel. Although we use an analysis based on extrinsic information transfer (EXIT) charts, we focus on the bit error rate (BER) performance as opposed to the convergence threshold. ...

Multiterminal (MT) source coding refers to separate lossy encoding and joint decoding of multiple correlated sources. This paper presents two practical MT coding schemes under the same general framework of Slepian-Wolf coded quantization (SWCQ) for both direct and indirect quadratic Gaussian MT source coding problems with two encoders. The first asymmetric SWCQ scheme relies on quantization and...

A chemiluminescent DNA probe (Accuprobe) assay developed by Gen Probe, Inc., for the rapid identification of Histoplasma capsulatum was evaluated and compared with the exoantigen test by using 162 coded cultures including Histoplasma capsulatum var. capsulatum, Histoplasma capsulatum var. duboisii, Histoplasma capsulatum var. farciminosum, Blastomyces dermatitidis, Coccidioides immitis, Paracoc...

Multiple input multiple output radars transmit partially coherent or noncoherent waveforms for improving spatial resolution or spatial diversity. While waveform design for SIMO radars concentrate on improving the delay and Doppler resolution characteristics, waveform design for MIMO radars involve optimization of delay, Doppler and spatial resolution characteristics. The resolution properties o...

This research aims to reveal trends on social inequality in curriculum studies based the carried out between 2014-2019 international literature. For this purpose, a systematic literature review was out. Some criteria have been specified for determine journals and articles be analyzed within purpose questions. In line with determined criteria, Scopus database searched, 262 reached as result of s...

We present a model of opinion dynamics where agents adjust continuous opinions on the occasion of random binary encounters whenever their difference in opinion is below a given threshold. High thresholds yield convergence of opinions towards an average opinion, but low thresholds result in several opinion clusters: members of the same cluster share the same opinion but do not adjust any more wi...

Optimization of truss-structures for finding optimal cross-sectional size, topology, and configuration of 2-D and 3-D trusses to achieve minimum weight is carried out using real-coded genetic algorithms (GAs). All the above three optimization techniques have been made possible by using a novel representation scheme. Although the proposed GA uses a fixed-length vector of design variables represe...

A design method for recursive space-time trellis codes and parallel-concatenated space-time turbo coded modulation is proposed that can be applied to an arbitrary existing space-time trellis code. The method enables a large, systematic increase in coding gain while preserving the maximum transmit diversity gain and bandwidth efficiency property of the considered spacetime trellis code. Applying...