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Discrete Cosine Transform (DCT) can be used instead of conventional Discrete Fourier Transform (DFT) for the Orthogonal Frequency Division Multiplexing (OFDM) construction, which offers many advantages. In this paper, the…

信息论 · 计算机科学 2023-11-28 Khaled Ramadan

This paper considers an integrated sensing and communication (ISAC) system with monostatic radar functionality using a zero-padding orthogonal frequency division multiplexing (ZP-OFDM) downlink transmission. We focus on ISAC's sensing…

信号处理 · 电气工程与系统科学 2024-02-02 Roberto Bomfin , Marwa Chafii

This work considers the problem of enabling maximum multipath diversity of orthogonal chirp division multiplexing (OCDM)-based systems. We define and study an Affine OCDM (A-OCDM) system in which a chirp parameter is adapted to enable…

信号处理 · 电气工程与系统科学 2024-11-26 Sidong Guo , Xiaoli Ma , Yiyin Wang

A new circularly pulse-shaped (CPS) precoding orthogonal frequency division multiplexing (OFDM) waveform, or CPS-OFDM for short, is proposed in this paper. CPS-OFDM, characterized by user-specific precoder flexibility, possesses the…

信息论 · 计算机科学 2024-10-30 Yenming Huang , Borching Su

Filter bank multiple access (FBMA) without subbands orthogonality has been proposed as a new candidate waveform to better meet the requirements of future wireless communication systems and scenarios. It has the ability to process directly…

信息论 · 计算机科学 2020-10-14 Yuhao Qi , Jian Dang , Zaichen Zhang , Liang Wu , Yongpeng Wu

A novel basis signal optimization method is proposed for reducing the interference in the N-continuous orthogonal frequency division multiplexing (NC-OFDM) system. Compared to conventional NC-OFDM, the proposed scheme is capable of…

信号处理 · 电气工程与系统科学 2020-11-04 Peng Wei , Yue Xiao , Wei Xiang

Unipolar communications systems can transmit information using only real and positive signals. This includes a variety of physical channels ranging from optical (fiber or free-space), to RF wireless using amplitude modulation with…

信息论 · 计算机科学 2011-12-14 Nirmal Fernando , Yi Hong , Emanuele Viterbo

Product distribution matching (PDM) is proposed to generate target distributions over large alphabets by combining the output of several parallel distribution matchers (DMs) with smaller output alphabets. The parallel architecture of PDM…

信息论 · 计算机科学 2017-02-27 Georg Böcherer , Patrick Schulte , Fabian Steiner

The orthogonal frequency division multiplexing is a very efficient modulation technique that can achieve very high throughput by transmitting many carriers simultaneously and it is spectrally efficient because of the proximity of the…

信号处理 · 电气工程与系统科学 2022-06-07 Usha S. M , Mahesh H. B

Orthogonal signal-division multiplexing (OSDM) is an attractive alternative to conventional orthogonal frequency-division multiplexing (OFDM) due to its enhanced ability in peak-to-average power ratio (PAPR) reduction. Combining OSDM with…

信号处理 · 电气工程与系统科学 2019-06-27 Jing Han , Shengqian Ma , Yujie Wang , Geert Leus

The underwater acoustic channel continues to present significant challenges to efficient throughput performance of underwater acoustic sensor networks (UASNs) in varying scenarios. As a result, cross-layer approaches that explore joint…

信息论 · 计算机科学 2016-04-05 Yanling Yin , Sumit Roy , Payman Arabshahi

In this paper, we propose a cross subcarrier precoder design (CSPD) for massive multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems. The aim is to maximize the weighted sum-rate (WSR) performance…

信息论 · 计算机科学 2025-03-11 Yuxuan Zhang , An-An Lu , Xiqi Gao

Recently, a new precoding technique called orthogonal time-frequency signaling (OTFS) has been proposed for time- and frequency-selective communication channels. OTFS precodes a data frame with a complete set of spreading sequences and…

信息论 · 计算机科学 2017-10-30 Thomas Zemen , Markus Hofer , David Loeschenbrand

Current implementations of OFDM/OQAM are restricted to band-limited symmetric filters. To circumvent this, non-symmetric conjugate root (CR) filters are proposed for OQAM modulation. The system is applied to Generalized Frequency Division…

信息论 · 计算机科学 2016-05-04 Maximilian Matthé , Gerhard Fettweis

This paper proposes a low-complexity iterative receiver for the recently proposed Orthogonal Chirp Division Multiplexing (OCDM) modulation scheme, where we consider a system under frequency-selective channels and constrained to channel…

信号处理 · 电气工程与系统科学 2019-03-20 Roberto Bomfin , Marwa Chafii , Gerhard Fettweis

In orthogonal time frequency space (OTFS) systems, the impact of frequency-dependent Doppler which is referred to as the Doppler squint effect (DSE) is accumulated through longer duration, whose negligence has prevented OTFS systems from…

信息论 · 计算机科学 2023-10-12 Xuehan Wang , Xu Shi , Jintao Wang , Jian Song

We investigate the coexistence of orthogonal time-frequency space (OTFS) modulation with current fourth- and fifth-generation (4G/5G) communication systems that primarily use orthogonal frequency-division multiplexing (OFDM) waveforms. We…

信号处理 · 电气工程与系统科学 2024-10-23 Akram Shafie , Jinhong Yuan , Paul Fitzpatrick , Taka Sakurai , Yuting Fang

This paper proposes a deep learning approach to channel sensing and downlink hybrid beamforming for massive multiple-input multiple-output systems operating in the time division duplex mode and employing either single-carrier or…

信息论 · 计算机科学 2022-06-30 Kareem M. Attiah , Foad Sohrabi , Wei Yu

OFDM (Orthogonal Frequency Division Multiplexing)provides the promising physical layer for 4G and 3GPP LTE Systems in terms of efficient use of bandwidth and data rates. This paper highlights the implementation of OFDM in Digital Video…

信息论 · 计算机科学 2014-05-01 Farhan Farhan

The original Python Testbed for Federated Learning Algorithms is a light FL framework, which provides the three generic algorithms: the centralized federated learning, the decentralized federated learning, and the TDM communication (i.e.,…

分布式、并行与集群计算 · 计算机科学 2026-01-15 Miroslav Popovic , Marko Popovic , Pavle Vasiljevic , Ilija Basicevic