Search Results for author: Vahid Pourahmadi

Found 11 papers, 5 papers with code

Parallel and Limited Data Voice Conversion Using Stochastic Variational Deep Kernel Learning

no code implementations8 Sep 2023 Mohamadreza Jafaryani, Hamid Sheikhzadeh, Vahid Pourahmadi

On the other hand, statistical methods are effective with limited data but have difficulties in modelling complex mapping functions.

Voice Conversion

Fast Classification with Sequential Feature Selection in Test Phase

1 code implementation25 Jun 2023 Ali Mirzaei, Vahid Pourahmadi, Hamid Sheikhzadeh, Alireza Abdollahpourrostam

During the test phase, the proposed approach utilizes Fisher scores for feature ranking to identify the most important feature at each step.

Classification feature selection

Progressive Transmission using Recurrent Neural Networks

1 code implementation3 Aug 2021 Mohammad Sadegh Safari, Vahid Pourahmadi, Patrick Mitran, Hamid Sheikhzadeh

The transmitter aims to send the data to the receiver as fast as possible and with as few channel uses as possible (as channel conditions permit) while the receiver refines its estimate after each channel use.

Sleep Stage Scoring Using Joint Frequency-Temporal and Unsupervised Features

no code implementations10 Apr 2020 Mohamadreza Jafaryani, Saeed Khorram, Vahid Pourahmadi, Minoo Shahbazi

Detection of such sleep disorders is usually possible by analyzing a number of vital signals that have been collected from the patients.

SensorDrop: A Reinforcement Learning Framework for Communication Overhead Reduction on the Edge

no code implementations3 Oct 2019 Pooya Khandel, Amir Hossein Rassafi, Vahid Pourahmadi, Saeed Sharifian, Rong Zheng

As such decisions are application dependent and may change over time, they should be learned during the operation of the system, for that we propose a method based on Advantage Actor-Critic (A2C) reinforcement learning which gradually learns which sensor's data is cost-effective to be sent to the central node.

reinforcement-learning Reinforcement Learning (RL)

Propagation Channel Modeling by Deep learning Techniques

no code implementations19 Aug 2019 Shirin Seyedsalehi, Vahid Pourahmadi, Hamid Sheikhzadeh, Ali Hossein Gharari Foumani

This paper presents a novel propagation channel model which considers the time-frequency response of the channel as an image.

Image-to-Image Translation Translation

Deep Feature Selection using a Teacher-Student Network

1 code implementation17 Mar 2019 Ali Mirzaei, Vahid Pourahmadi, Mehran Soltani, Hamid Sheikhzadeh

In this paper, we present a novel teacher-student feature selection (TSFS) method in which a 'teacher' (a deep neural network or a complicated dimension reduction method) is first employed to learn the best representation of data in low dimension.

Clustering Dimensionality Reduction +1

Deep UL2DL: Channel Knowledge Transfer from Uplink to Downlink

1 code implementation16 Dec 2018 Mohammad Sadegh Safari, Vahid Pourahmadi, Shabnam Sodagari

As such, we extracted the environment information from the UL channel response to a latent domain and then transferred the derived environment information from the latent domain to predict the DL channel.

Transfer Learning

DeepPos: Deep Supervised Autoencoder Network for CSI Based Indoor Localization

no code implementations27 Nov 2018 Peyman Yazdanian, Vahid Pourahmadi

Unlike the previous fingerprinting approaches, in this work, we do not store the {CSI/RSS} of fingerprints and instead we model the environment only with a single SAE.

Indoor Localization

Deep Learning-Based Channel Estimation

4 code implementations13 Oct 2018 Mehran Soltani, Vahid Pourahmadi, Ali Mirzaei, Hamid Sheikhzadeh

This scheme considers the pilot values, altogether, as a low-resolution image and uses an SR network cascaded with a denoising IR network to estimate the channel.

Denoising Image Restoration +1

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