8 citations · 34 across the 13 of their papers we have counts for
14 papers
Optimum Spectrum Extension for PAPR Reduction of DFT-s-OFDM
Renaud-Alexandre Pitaval, Fredrik Berggren, Branislav M. Popovic
Uplink coverage in cellular networks is constrained by the maximum UE transmit power, making peak-to-average power ratio (PAPR) reduction essential. While DFT-s-OFDM with frequency…
Transforming faces into video stories -- VideoFace2.0
Branko Brkljač, Vladimir Kalušev, Branislav Popović +1
Face detection and face recognition have been in the focus of vision community since the very beginnings. Inspired by the success of the original Videoface digitizer, a pioneering…
Beamforming Performances of Holographic Surfaces
Peng Wang, Majid Nasiri Khormuji, Branislav M. Popovic
In this paper, we investigate the beamforming performances of holographic surfaces implemented as lossless antenna arrays with less than half-wavelength spacing. We first develop a…
Permutation Polynomial Interleaved Zadoff-Chu Sequences
Fredrik Berggren, Branislav M. Popovic
Constant amplitude zero autocorrelation (CAZAC) sequences have modulus one and ideal periodic autocorrelation function. Such sequences are used in cellular radio communications sys…
All you need is feedback: Communication with block attention feedback codes
Emre Ozfatura, Yulin Shao, Alberto Perotti +2
Deep learning based channel code designs have recently gained interest as an alternative to conventional coding algorithms, particularly for channels for which existing codes do no…
Joint radar and communications with multicarrier chirp-based waveform
Fredrik Berggren, Branislav M. Popovic
We consider a multicarrier chirp-based waveform for joint radar and communication (JRC) systems and derive its time discrete periodic ambiguity function (AF). An advantage of the w…
AttentionCode: Ultra-Reliable Feedback Codes for Short-Packet Communications
Yulin Shao, Emre Ozfatura, Alberto Perotti +2
Ultra-reliable short-packet communication is a major challenge in future wireless networks with critical applications. To achieve ultra-reliable communications beyond 99.999%, this…
DRF Codes: Deep SNR-Robust Feedback Codes
Mahdi Boloursaz Mashhadi, Deniz Gunduz, Alberto Perotti +1
We present a new deep-neural-network (DNN) based error correction code for fading channels with output feedback, called deep SNR-robust feedback (DRF) code. At the encoder, parity…
Accumulative Iterative Codes Based on Feedback
Alberto G. Perotti, Branislav M. Popovic, Anahid R. Safavi
The Accumulative Iterative Code (AIC) proposed in this work is a new error correcting code for channels with feedback. AIC sends the information message to the receiver in a number…
Deep Extended Feedback Codes
Anahid Robert Safavi, Alberto G. Perotti, Branislav M. Popovic +2
A new deep-neural-network (DNN) based error correction encoder architecture for channels with feedback, called Deep Extended Feedback (DEF), is presented in this paper. The encoder…
Zero Correlation Zone Sequences With Flexible Block-Repetitive Spectral Constraints
Branislav M. Popovic, Peng Wang, Fredrik Berggren +1
A general construction of a set of time-domain sequences with sparse periodic correlation functions, having multiple segments of consecutive zero-values, i.e. multiple zero correla…
Spectrally-Precoded OFDM for 5G Wideband Operation in Fragmented sub-6GHz Spectrum
Renaud-Alexandre Pitaval, Branislav M. Popović, Medhat Mohamad +2
We consider spectrally-precoded OFDM waveforms for 5G wideband transmission in sub-6GHz band. In this densely packed spectrum, a low out-of-band (OOB) waveform is a critical 5G com…
Non-Orthogonal Multiple Access for Degraded Broadcast Channels: RA-CEMA
Alberto G. Perotti, Branislav M. Popovic
A new non-orthogonal multiple access scheme performing simultaneous transmission to multiple users characterized by different signal-to-noise ratios is proposed. Different users ar…
Enhanced Trellis Coded Multiple Access (ETCMA)
Alberto G. Perotti, Branislav M. Popovic
We propose an enhanced version of trellis coded multiple access (TCMA), an overloaded multiple access scheme that outperforms the original TCMA in terms of achieved spectral effici…