نتایج جستجو برای: hierarchical modulation

تعداد نتایج: 241433  

In this paper, a complete review of published researches about hierarchical facility location and hub network problems is presented. Hierarchical network is a system where facilities with different service levels interact in a top-down way or vice versa. In Hierarchical systems, service levels are composed of different facilities. Published papers from (1970) to (2015) have been studied and a c...

In this paper a feature-based modulation classification algorithm is developed for discriminating PSK signals. The candidate modulation types are assumed to be QPSK, OQPSK, π/4 DQOSK and 8PSK. The proposed method applies an 8PSK baseband demodulator in order to extract required features from observed symbols. The received signal with unknown modulation type is demodulated by an 8PSK demodulator...

Journal: :IEEE Access 2023

One of the major challenges in change detection (CD) high-resolution remote sensing images is high requirement for computational resources. Besides, to get best result, it must spot only important changes while omitting unimportant ones, which requires learning complex interactions between multi-scale objects on images. Despite Convolution Neural Network (CNN) efficiently extracting features fr...

Journal: :international journal of information science and management 0
z. hayati ph.d. , department of librarianship and information science , shiraz university p. tajer m.s. , islamic azad university – marvdasht branch , marvdasht

this survey is aimed to compare the hierarchical structure of subject directories, including yahoo, the open directory and looksmart with dewey decimal classification (ddc) in 10 selective subjects. five questions are raised to compare the broadness and the depth of the hierarchical structures in the subject directories and ddc and to study the effectiveness of the usage of ddc in the organizat...

Journal: :EURASIP J. Wireless Comm. and Networking 2010
Tomas Uricar Jan Sykora

The unavoidable parametrization of the wireless link represents a major problem of the network-coded modulation synthesis in a 2-way relay channel. Composite (hierarchical) codeword received at the relay is generally parametrized by the channel gain, forcing any processing on the relay to be dependent on channel parameters. In this paper, we introduce the codebook design criteria, which ensure ...

2012
Oded Ghitza

Recent hypotheses on the potential role of neuronal oscillations in speech perception propose that speech is processed on multi-scale temporal analysis windows formed by a cascade of neuronal oscillators locked to the input pseudo-rhythm. In particular, Ghitza (2011) proposed that the oscillators are in the theta, beta, and gamma frequency bands with the theta oscillator the master, tracking th...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید