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Future wireless communication systems must simultaneously address multiple challenges to ensure accurate data detection, deliver high Quality of Service (QoS), adding enable a high data transmission with low system design. Additionally,…

Information Theory · Computer Science 2024-10-03 Amina Darghouthi , Abdelhakim Khlifi , Belgacem Chibani

Cooperative transmission is an emerging communication technique that takes advantage of the broadcast nature of wireless channels. However, due to low spectral efficiency and the requirement of orthogonal channels, its potential for use in…

Information Theory · Computer Science 2016-11-17 Zhu Han , Xin Zhang , H. Vincent Poor

Modern 5G communication systems employ multiple-input multiple-output (MIMO) in conjunction with orthogonal frequency division multiplexing (OFDM) to enhance data rates, particularly for wideband millimetre wave (mmW) applications. Since…

Signal Processing · Electrical Eng. & Systems 2023-03-21 Parth Mehta , Agulla Surya Bharath , Kumar Appaiah , Rajbabu Velmurugan , Debasattam Pal

Orthogonal signaling or Nyquist signaling limits the number of information symbols transmitted in bandwidth $B$ and time $T$ to be $BT$, the time-bandwidth product. Transmitting more than $BT$ symbols leads to loss of orthogonality. The…

Signal Processing · Electrical Eng. & Systems 2025-08-27 Sandesh Rao Mattu , Nishant Mehrotra , Robert Calderbank

In this paper, we present a space-time-frequency joint block coding (STFBC) scheme to exploit the essential space-time-frequency degrees of freedom of multiuser MISO-MC-CDMA systems. Specifically, we use a series of orthogonal random codes…

Information Theory · Computer Science 2014-07-10 Xiaoming Chen , Xiumin Wang

Cooperative transmission is an emerging communication technique that takes advantages of the broadcast nature of wireless channels. However, due to low spectral efficiency and the requirement of orthogonal channels, its potential for use in…

Information Theory · Computer Science 2016-11-17 Zhu Han , Xin Zhang , H. Vincent Poor

This paper tackles the problem of the simultaneous interference among the multiple users in the downlink of a wireless multiantenna system. In order to exploit the multiuser interference and transform it into useful power at the receiver…

Signal Processing · Electrical Eng. & Systems 2020-11-10 Maha Alodeh , Björn Ottersten

Coordinated Multi-Point (CoMP) transmission is an infrastructural enhancement under consideration for next generation wireless networks. In this work, the capacity gain achieved through CoMP transmission is studied in various models of…

Information Theory · Computer Science 2013-10-10 Aly El Gamal , V. Sreekanth Annapureddy , Venugopal V. Veeravalli

Precoding is a method of compensating the channel at the transmitter. This work presents a novel method of data detection in turbo coded single user massive multiple input multiple output (MIMO) systems using precoding. We show via computer…

Information Theory · Computer Science 2020-08-03 K. Vasudevan , Gyanesh Kumar Pathak , A. Phani Kumar Reddy

Much of the engineering behind current wireless systems has focused on designing an efficient and high-throughput downlink to support human-centric communication such as video streaming and internet browsing. This paper looks ahead to…

Signal Processing · Electrical Eng. & Systems 2024-12-06 Sandesh Rao Mattu , Imran Ali Khan , Venkatesh Khammammetti , Beyza Dabak , Saif Khan Mohammed , Krishna Narayanan , Robert Calderbank

In this paper, we introduce novel coding schemes for wireless networks with random transmission delays. These coding schemes obviate the need for synchronicity, reduce the number of transmissions and achieve the optimal rate region in the…

Information Theory · Computer Science 2015-03-04 Niv Voskoboynik , Haim H. Permuter , Asaf Cohen

In this paper, we consider the task of introducing a new wireless data link over a given occupied frequency band using a multi-antenna transmitter and receiver. We design formally a dynamic multiple-input multiple-output (MIMO) wireless…

Networking and Internet Architecture · Computer Science 2025-04-10 Hatef Nouri , George Sklivanitis , Dimitris A. Pados , Elizabeth Serena Bentley

Interference at the radio receiver is a key source of degradation in quality of service of wireless communication systems. This paper presents a unified framework for OFDM/FBMC interference characterization and analysis in asynchronous…

Networking and Internet Architecture · Computer Science 2011-08-03 Yahia Medjahdi , Michel Terré , Didier Le Ruyet , Daniel Roviras

Orthogonal Frequency Division Multiplexing (OFDM) is a multi-carrier modulation technique which is very much popular in new wireless networks of IEEE standard, digital television, audio broadcasting and 4G mobile communications. The main…

Networking and Internet Architecture · Computer Science 2013-09-30 Ankit Chadha , Neha Satam , Beena Ballal

Time reversal (TR) recently emerged as an interesting communication technology capable of providing a good spatio-temporal signal focusing effect. New generations of large-bandwidth devices with reduced cost leverage the use of TR wideband…

Signal Processing · Electrical Eng. & Systems 2019-04-25 Trung-Hien Nguyen , Jean-François Determe , Mathieu Van Eeckhaute , Jérôme Louveaux , Philippe De Doncker , François Horlin

In wireless communication systems, Orthogonal Frequency-Division Multiplexing (OFDM) includes variants using either a cyclic prefix (CP) or a zero padding (ZP) as the guard interval to avoid inter-symbol interference. OFDM is ideally suited…

Signal Processing · Electrical Eng. & Systems 2020-08-18 Koosha Pourtahmasi Roshandeh , Mostafa Mohammadkarimi , Masoud Ardakani

This paper investigates channel estimation for linear time-varying (LTV) wireless channels under double sparsity, i.e., sparsity in both the delay and Doppler domains. An on-grid approximation is first considered, enabling rigorous…

Information Theory · Computer Science 2025-11-10 Wissal Benzine , Ali Bemani , Nassar Ksairi , Dirk Slock

In this contribution, we consider a two-tiered network and focus on the coexistence between the two tiers at physical layer. We target our efforts on a long term evolution advanced (LTE-A) orthogonal frequency division multiple access…

Information Theory · Computer Science 2013-02-21 Marco Maso , Merouane Debbah , Lorenzo Vangelista

In dynamically varying optical wireless communication (OWC) links, conventional quadrature amplitude modulation (QAM) in optical orthogonal frequency-division multiplexing (OFDM) requires frequent channel estimation and equalization,…

Optics · Physics 2026-03-19 Tian Cao , Ping Wang , Tianfeng Wu , Kaile Wang , Jian Song

The standardization of the sixth-generation (6G) has recently commenced to address the rapidly growing demands for enhanced wireless network services. Nevertheless, existing wireless systems, particularly at the physical layer waveform…