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In this paper, a novel joint bit and power loading algorithm is proposed for orthogonal frequency division multiplexing (OFDM) systems operating in fading environments. The algorithm jointly maximizes the throughput and minimizes the…

Signal Processing · Electrical Eng. & Systems 2019-02-13 Ebrahim Bedeer , Octavia A. Dobre , Mohamed H. Ahmed , Kareem E. Baddour

Based on the application of the Sum-Product algorithm (SPA) over factor graphs, this paper presents a graphical representation of generalized frequency division multiplexing (GFDM) and filter bank multicarrier with offset QAM (FBMC-OQAM).…

Signal Processing · Electrical Eng. & Systems 2019-09-04 Ivo Bizon Franco de Almeida , Guilherme Pedro Aquino , Luciano Leonel Mendes

In this paper, we consider the problem of preamble design in multiple-input multiple-output (MIMO) systems employing offset quadrature amplitude modulation based filter bank multicarrier (OQAM/FBMC) and propose a preamble optimization…

Information Theory · Computer Science 2018-02-13 Wenfeng Liu , Da Chen , Kai Luo , Tao Jiang , Daiming Qu

In the beginning of 21st century there has been a dramatic shift in the market dynamics of telecommunication services. The transmission from base station to mobile or downlink transmission using M-ary Quadrature Amplitude modulation (QAM)…

Other Computer Science · Computer Science 2010-03-30 M. A. Masud , M. Samsuzzaman , M. A. Rahman

Efficient implementation of massive multiple-input-multiple-output (MIMO) transceivers is essential for the next-generation wireless networks. To reduce the high computational complexity of the massive MIMO transceiver, in this paper, we…

Information Theory · Computer Science 2024-11-15 Yiming Fang , Li Chen , Yunfei Chen , Huarui Yin

In massive multiple-input multiple-output (MIMO) systems, acquisition of the channel state information at the transmitter side (CSIT) is crucial. In this paper, a practical CSIT estimation scheme is proposed for frequency division duplexing…

Networking and Internet Architecture · Computer Science 2016-10-13 Zhiyi Zhou , Xu Chen , Dongning Guo , Michael L. Honig

A method for estimating the performance of low-density parity-check (LDPC) codes decoded by hard-decision iterative decoding algorithms on binary symmetric channels (BSC) is proposed. Based on the enumeration of the smallest weight error…

Information Theory · Computer Science 2007-07-13 Hua Xiao , Amir H. Banihashemi

We introduce a novel online convex optimization (OCO) framework to estimate the user's signal-to-interference-plus-noise ratio (SINR) from ACK/NACK feedback, channel quality indicator (CQI) reports, and previously selected modulation and…

Information Theory · Computer Science 2026-03-16 Lorenzo Maggi , Boris Bonev , Reinhard Wiesmayr , Sebastian Cammerer , Alexander Keller

This paper presents a fully blind phase-aware expectation-maximization (EM) algorithm for OFDM systems with the phase-shift keying (PSK) modulation. We address the well-known local maximum problem of the EM algorithm for blind channel…

Signal Processing · Electrical Eng. & Systems 2025-11-27 Chin-Hung Chen , Ivana Nikoloska , Wim van Houtum , Yan Wu , Alex Alvarado

Herein, an atomic norm based method for accurately estimating the location and orientation of a target from millimeter-wave multi-input-multi-output (MIMO) orthogonal frequency-division multiplexing (OFDM) signals is presented. A novel…

Signal Processing · Electrical Eng. & Systems 2021-10-12 Jianxiu Li , Maxime Ferreira Da Costa , Urbashi Mitra

This paper presents enhanced receiver metrics for joint estimation-detection in short blocklength transmissions, addressing scenarios with unknown channel state information and low or sparse training resource density. We show that it is…

Information Theory · Computer Science 2025-10-08 Mody Sy , Raymond Knopp

We consider a multi-user multiple-input multiple-output (MU-MIMO) system that uses orthogonal frequency division multiplexing (OFDM). Several receivers are developed for data detection of MU-MIMO transmissions where two users share the same…

Information Theory · Computer Science 2015-02-03 Ahmad Gomaa , Louay M. A. Jalloul , Krishna S. Gomadam , Djordje Tujkovic , Mohammad M. Mansour

This work deals with turbo coded single user massive multiple input multiple output (SU-MMIMO) systems, with and without precoding. SU-MMIMO has a much higher spectral efficiency compared to multi-user massive MIMO (MU-MMIMO) since…

Information Theory · Computer Science 2021-07-07 K. Vasudevan , A. Phani Kumar Reddy , Gyanesh Kumar Pathak , Mahmoud Albreem

This paper focuses on the non-coherent detection in ambient backscatter communication, which is highly appealing for systems where the trade-off between signaling overhead and the actual data transmission is very critical. Modeling the…

Information Theory · Computer Science 2021-04-28 J. Kartheek Devineni , Harpreet S. Dhillon

Filter bank-based multicarrier (FBMC) systems are currently being considered as a prevalent candidate for replacing the long established cyclic prefix (CP)-based orthogonal frequency division multiplexing (CP-OFDM) in the physical layer of…

Information Theory · Computer Science 2016-10-03 Eleftherios Kofidis , Christos Chatzichristos , Andre L. F. de Almeida

The problem of modulation classification for a multiple-antenna (MIMO) system employing orthogonal frequency division multiplexing (OFDM) is investigated under the assumption of unknown frequency-selective fading channels and…

Information Theory · Computer Science 2016-04-11 Yu Liu , Osvaldo Simeone , Alexander M. Haimovich , Wei Su

We present the performance of MIMO for in vivo environments, using ANSYS HFSS and their complete human body model, to determine the maximum data rates that can be achieved using an IEEE 802.11n system. Due to the lossy nature of the in vivo…

Information Theory · Computer Science 2016-02-18 Chao He , Yang Liu , Thomas P. Ketterl , Gabriel E. Arrobo , Richard D. Gitlin

In time-domain synchronous OFDM (TDS-OFDM) system for digital television terrestrial multimedia broadcasting (DTMB) standard, the baseband OFDM signal is upsampled and shaping filtered by square root raised cosine (SRRC) filter before…

Information Theory · Computer Science 2016-11-15 Zhen Gao , Chao Zhang , Yu Zhang , Hang Zhang

We address the problem of the bit error rate (BER) performance gap between the sub-optimal and optimal linear precoder (LP) for a multiuser (MU) multiple input and multiple output (MIMO) broadcast systems in this paper. Particularly, mobile…

Information Theory · Computer Science 2016-12-08 Md. Abdul Latif Sarker

Training sequences are designed to probe wireless channels in order to obtain channel state information for block-fading channels. Optimal training sounds the channel using orthogonal beamforming vectors to find an estimate that optimizes…

Information Theory · Computer Science 2014-04-04 Andrew J. Duly , Taejoon Kim , David J. Love , James V. Krogmeier
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