نتایج جستجو برای: raised cosine

تعداد نتایج: 79029  

2014
Jun Ye Huancheng West

Similarity measures are an important tool in pattern recognition and medical diagnosis. To overcome some disadvantages of existing cosine similarity measures for simplified neutrosophic sets (SNSs) in vector space, this paper proposes improved cosine similarity measures for SNSs based on the cosine function, including single valued neutrosophic cosine similarity measures and interval neutrosoph...

2014
Md. Sohrab Ansari Mathew Oommen

Spread spectrum technology has blossomed from a military technology into one of the fundamental building blocks in current and next-generation wireless systems. The spread-spectrum technology provides antijam capabilities through a processing gain that results from using a wideband (large bandwidth) signal and it also provides capacity enhancement and robustness against noise. This paper presen...

2013
Sohail Asghar Rocío del Río José Manuel de la Rosa

This paper presents a continuous-time fourth-order band-pass Σ∆ Modulator for digitizing radio-frequency signals in software-defined-radio mobile systems. The modulator architecture is made up of two resonators and a 16-level quantizer in the feedforward path and a raised-cosine finite-impulsiveresponse feedback DAC. The latter is implemented with a reduced number of filter coefficients as comp...

2015
un Ye

Objective: In pattern recognition and medical diagnosis, similarity measure is an important mathematical tool. To overcome some disadvantages of existing cosine similarity measures of simplified neutrosophic sets (SNSs) in vector space, this paper proposed improved cosine similarity measures of SNSs based on cosine function, including single valued neutrosophic cosine similarity measures and in...

Journal: :IEEE Transactions on Wireless Communications 2022

In this paper, we propose eigenvalue decomposition (EVD)-precoded faster-than-Nyquist (FTN) signaling with power allocation in a frequency-selective fading channel. More specifically, derive the mutual information associated proposed FTN signaling. Then, optimal coefficients are calculated such that derived is maximized. Our analytical performance results show scheme achieves higher rate than c...

Journal: :Photonics 2021

Symbol rate and chromatic dispersion (CD) are very important for optical performance monitoring. The CD, however, hinders the symbol detection. In this paper, we proposed a joint estimation of dispersion. We show that, when signal conjugates multiplies with delayed replica, spectral line can be restored. method provides fast simple solution as traditional tentative CD scanning is time consuming...

Journal: :Journal of physics 2021

Abstract M-ary frequency shift keying (FSK) is a low-power, low-data-rate modulation scheme currently used by manufacturers of data transmission equipment. Inter symbol interference (ISI) occurs in all communication systems. To analyze the effect raised cosine filter and adaptive equalizer on reducing ISI, binary FSK (BFSK) technique has been studied extensively this research. In study, we have...

2012
Rupesh Yadav Puran Gour Rajesh Nema

Pulse shaping filters have been designed and implemented by using Raised cosine filter, Nyquist filter and optimized half band filters for software defined radio (SDR) based wireless applications. In signal processing, a finite impulse response (FIR) filter is a filter whose impulse response (or response to any finite length input) is of finite duration, because it settles to zero in finite tim...

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