Use of dual-polarized arrays in multiple-input multiple-output (MIMO) systems is addressed in this paper. A new and simple analytical model of dual-polarized Rayleigh and Ricean fading channels is taken, which relies on a limited number of physical parameters, such as the spatial correlations, the co-polar gain imbalance and the cross-polar discrimination. Then, the multiplexing advantage of du...

This paper has dual aims. First is to develop practical universal coding methods for unlabeled graphs. Second is to use these for graph anomaly detection. The paper develops two coding methods for unlabeled graphs: one based on the degree distribution, the second based on the triangle distribution. It is shown that these are efficient for different types of random graphs, and on real-world grap...

We propose a photonic method to generate and transmit dual-band dual-chirp microwave waveforms based on dual-polarization dual-parallel Mach-Zehnder modulator (DP-DPMZM). The key novelty of this work is the generation with flexible central frequency relationship meet requirement radar system, transmission generated elimination power fading. In proposed method, are by applying two different RF s...

A compact and cost-effective photonic approach for generating switchable multi-format linearly chirped signals is proposed experimentally demonstrated. The core component a dual-drive Mach–Zehnder modulator driven by coding sequence waveform. By properly setting the amplitudes of sequence, signal with different formats, including frequency shift keying (FSK), phase (PSK), dual-band PSK, FSK/PSK...

In this paper, we present CodeDrip, a data dissemination protocol for Wireless Sensor Networks. Dissemination is typically used to query nodes, send commands, and reconfigure the network. CodeDrip utilizes Network Coding to improve energy efficiency, reliability, and speed of dissemination. Network coding allows recovery of lost packets by combining the received packets thereby making dissemina...

Conway and Sloane have previously given an upper bound on the minimum distance of a singly-even self-dual binary code, using the concept of the shadow of a self-dual code. We improve their bound, finding that the minimum distance of a selfdual binary code of length n is at most 4bn=24c+4, except when nmod24 = 22 , when the bound is 4bn=24c + 6. We also show that a code of length a multiple of 2...

Based on dual coding theory, this study predicted that pictorial typography (PT), a device involving direct visual integration of a written word into a picture of its referent, is more effective for ESL children’s pre-literacy skills, than the non-integrated paring of word and picture on flashcards (FC). The two types of instruction were given to thirty-two Korean children aged six and seven, b...