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The design of codes for feedback-enabled communications has been a long-standing open problem. Recent research on non-linear, deep learning-based coding schemes have demonstrated significant improvements in communication reliability over…

Information Theory · Computer Science 2023-06-09 Junghoon Kim , Taejoon Kim , David Love , Christopher Brinton

Designing codes that combat the noise in a communication medium has remained a significant area of research in information theory as well as wireless communications. Asymptotically optimal channel codes have been developed by mathematicians…

Information Theory · Computer Science 2019-11-11 Yihan Jiang , Hyeji Kim , Himanshu Asnani , Sreeram Kannan , Sewoong Oh , Pramod Viswanath

In this paper, we investigate and assess the performance of intra-channel nonlinearity compensation (IC-NLC) in long-haul coherent optical transmission systems with a symbol rate of 200 GBaud and beyond. We first evaluate the potential gain…

Optics · Physics 2025-07-29 Zhiyuan Yang , Mengfan Fu , Yihao Zhang , Qizhi Qiu , Lilin Yi , Weisheng Hu , Qunbi Zhuge

In this paper, we propose a constructive interference (CI)-based block-level precoding (CI-BLP) approach for the downlink of a multi-user multiple-input single-output (MU-MISO) communication system. Contrary to existing CI precoding…

Information Theory · Computer Science 2024-10-28 Ang Li , Chao Shen , Xuewen Liao , Christos Masouros , A. Lee Swindlehurst

Symbol-level precoding (SLP) manipulates the transmitted signals to accurately exploit the multi-user interference (MUI) in the multi-user downlink. This enables that all the resultant interference contributes to correct detection, which is…

Information Theory · Computer Science 2022-11-29 Junwen Yang , Ang Li , Xuewen Liao , Christos Masouros

We propose a unitary precoding scheme, namely polar-precoding, to improve the performance of polar-coded MIMO systems. In contrast to the traditional design of MIMO precoding criteria, the proposed polar-precoding scheme relies on the…

Information Theory · Computer Science 2021-09-15 Jinnan Piao , Kai Niu , Jincheng Dai , Lajos Hanzo

Communications over power lines in the frequency range above 2 MHz, commonly referred to as broadband (BB) power line communications (PLC), has been the focus of increasing research attention and standardization efforts in recent years.…

Information Theory · Computer Science 2018-05-21 Nir Shlezinger , Roee Shaked , Ron Dabora

Joint optimization of nonlinear precoders and receive filters is studied for both the uplink and downlink in a cellular system. For the uplink, the base transceiver station (BTS) receiver implements successive interference cancellation, and…

Information Theory · Computer Science 2015-10-28 Mingguang Xu , Dongning Guo , Michael L. Honig

This paper considers the performance analysis of constructive interference (CI) precoding technique in multi-user multiple-input multiple-output (MU-MIMO) systems with a finite constellation phase-shift keying (PSK) input alphabet. Firstly,…

Signal Processing · Electrical Eng. & Systems 2019-10-09 Abdelhamid Salem , Christos Masouros

We investigate Gaussian widely linear precoding known as improper Gaussian signaling for the cellular uplink with inter-cell interference, known as interference multiple access channel (IMAC). This transmission scheme provides extra degrees…

Information Theory · Computer Science 2018-05-31 Ali Kariminezhad , Stefan Roth , Aydin Sezgin , Anas Chaaban

In this paper, we present an unsupervised learning neural model to design transmit precoders for integrated sensing and communication (ISAC) systems to maximize the worst-case target illumination power while ensuring a minimum…

Signal Processing · Electrical Eng. & Systems 2023-03-14 R. S. Prasobh Sankar , Sidharth S. Nair , Siddhant Doshi , Sundeep Prabhakar Chepuri

In this paper we propose a matched decoding scheme for convolutionally encoded transmission over intersymbol interference (ISI) channels and devise a nonlinear trellis description. As an application we show that for coded continuous phase…

Information Theory · Computer Science 2012-08-02 Fabian Schuh , Johannes B. Huber

This paper studies the achievable rates of Gaussian interference channels with additive white Gaussian noise (AWGN), when improper or circularly asymmetric complex Gaussian signaling is applied. For the Gaussian multiple-input…

Information Theory · Computer Science 2016-11-18 Yong Zeng , Cenk M. Yetis , Erry Gunawan , Yong Liang Guan , Rui Zhang

Tomlinson-Harashima precoding (THP) is considered as a prominent precoding scheme due to its capability to efficiently cancel out the known interference at the transmitter side. Therefore, the information rates achieved by THP are superior…

Information Theory · Computer Science 2011-01-06 Bing Hui , Manar Mohaisen , KyungHi Chang

Intersymbol Interference (ISI) is a major bottleneck in Molecular Communication via Diffusion (MCvD), degrading system performance. This paper introduces two families of linear channel codes to mitigate ISI: Zero Pad Zero Start (ZPZS) and…

Information Theory · Computer Science 2025-07-01 Tamoghno Nath , Krishna Gopal Benerjee , Adrish Banerjee

Recent information theoretic results suggest that precoding on the multi-user downlink MIMO channel with delayed channel state information at the transmitter (CSIT) could lead to data rates much beyond the ones obtained without any CSIT,…

Information Theory · Computer Science 2012-07-10 Xinping Yi , David Gesbert

Matched decoding is a technique that enables the efficient maximum-likelihood sequence estimation of convolutionally encoded PAM-transmission over ISI-channels. Recently, we have shown that the super-trellis of encoder and channel can be…

Information Theory · Computer Science 2012-08-02 Fabian Schuh , Andreas Schenk , Johannes B. Huber

In this paper, we propose successive optimization non-linear precoding strategies for physical-layer security in wireless networks. We also investigate different precoding techniques for multi-user MIMO systems under various conditions of…

Information Theory · Computer Science 2014-06-17 X. Luo , R. C. de Lamare , K. Zu

Dealing with nonlinear effects of the radio-frequency(RF) chain is a key issue in the realization of very large-scale multi-antenna (MIMO) systems. Achieving the remarkable gains possible with massive MIMO requires that the signal…

Information Theory · Computer Science 2021-06-29 Amine Mezghani , Daniel Plabst , Lee A. Swindlehurst , Inbar Fijalkow , Josef A. Nossek

Precoding has stood out as a promising multi-user transmission technique to meet the emerging throughput demand of satellite communication systems while awaiting the technological maturity for exploiting higher bands. Precoding enables the…

Signal Processing · Electrical Eng. & Systems 2020-11-04 Bhavani Shankar Mysore , Eva Lagunas , Symeon Chatzinotas , Bjorn Ottersten