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In this work, we propose a novel low-complexity reduced-rank scheme and consider its application to linear interference suppression in direct-sequence ultra-wideband (DS-UWB) systems. Firstly, we investigate a generic reduced-rank scheme…

Information Theory · Computer Science 2013-05-16 Sheng Li , Rodrigo C. de Lamare

In order to effetively suppress intersymbol interference (ISI) at low complexity, we propose in this paper an approximate maximum likelihood (ML) decision feedback block equalizer (A-ML-DFBE) for doubly selective (frequency-selective,…

Information Theory · Computer Science 2011-12-06 Lingyang Song , Rodrigo C. de Lamare , Are Hjorungnes , Alister G. Burr

In this paper, we study the equalization design for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems with insufficient cyclic prefix (CP). In particular, the signal detection performance is…

Information Theory · Computer Science 2020-07-24 Yan Sun , Chao Wang , Huan Cai , Chunming Zhao , Yiqun Wu , Yan Chen

In this paper, we propose a widely-linear (WL) receiver structure for multiple access interference (MAI) and {jamming signal (JS)} suppression in direct-sequence code-division multiple-access (DS-CDMA) systems. A vector space projection…

Networking and Internet Architecture · Computer Science 2014-07-08 J. Yang , R. C. de Lamare

This paper investigates the design and analysis of minimum mean square error (MMSE) turbo decision feedback equalization (DFE), with expectation propagation (EP), for single carrier modulations. Classical non iterative DFE structures have…

Signal Processing · Electrical Eng. & Systems 2018-07-03 Serdar Şahin , Antonio M. Cipriano , Charly Poulliat , Marie-Laure Boucheret

This paper proposes a unified approach to joint adaptive parameter estimation and interference cancellation (IC) for direct sequence code-division-multiple-access (DS-CDMA) systems in multipath channels. A unified framework is presented in…

Information Theory · Computer Science 2013-04-23 Rodrigo C. de Lamare , Are Hjorungnes , Raimundo Sampaio-Neto

Reliable communication over bandlimited and non-linear channels usually requires equalization to simplify receiver processing. Equalizers that perform joint detection and decoding (JDD) achieve the highest information rates but are often…

Information Theory · Computer Science 2024-08-28 Daniel Plabst , Tobias Prinz , Francesca Diedolo , Thomas Wiegart , Georg Böcherer , Norbert Hanik , Gerhard Kramer

Consider a multiuser multiple-input multiple-output (MU-MIMO) downlink system in which the base station (BS) sends multiple data streams to multi-antenna users via symbol-level precoding (SLP), where the optimization of receive combining…

Signal Processing · Electrical Eng. & Systems 2023-07-28 Xiao Tong , Ang Li , Lei Lei , Fan Liu , Fuwang Dong

In this paper, taking the view that a linear parallel interference canceller (LPIC) can be seen as a linear matrix filter, we propose new linear matrix filters that can result in improved bit error performance compared to other LPICs in the…

Information Theory · Computer Science 2007-09-17 T. Srikanth , K. Vishnu Vardhan , A. Chockalingam , L. B. Milstein

Communications in dispersive direct-sequence code-division multiple-access (DS-CDMA) channels suffer from intersymbol and multiple-access interference, which can significantly impair performance. Joint maximum \textit{a posteriori}…

Information Theory · Computer Science 2007-07-13 Husheng Li , H. V. Poor

This work presents joint interference suppression and power allocation algorithms for DS-CDMA networks with multiple hops and decode-and-forward (DF) protocols. A scheme for joint allocation of power levels across the relays subject to…

Information Theory · Computer Science 2013-04-09 Rodrigo C. de Lamare

A new adaptive receiver design for the Multicarrier (MC) DS-CDMA is proposed employing successive interference cancellation (SIC) architecture. One of the main problems limiting the performance of SIC in MC DS-CDMA is the imperfect…

Information Theory · Computer Science 2011-03-01 Indu Shakya , Falah H. Ali , Elias Stipidis

This paper presents joint power allocation and interference mitigation techniques for the downlink of spread spectrum systems which employ multiple relays and the amplify and forward cooperation strategy. We propose a joint constrained…

Information Theory · Computer Science 2013-01-29 Rodrigo C. de Lamare

This work presents joint iterative power allocation and interference suppression algorithms for spread spectrum networks which employ multiple hops and the amplify-and-forward cooperation strategy for both the uplink and the downlink. We…

Information Theory · Computer Science 2013-01-03 Rodrigo C. de Lamare

In this article, we propose an improved multiple feedback successive interference cancellation (IMF-SIC) algorithm for symbol vector detection in multiple-input multiple-output (MIMO) spatial multiplexing systems. The multiple feedback (MF)…

Information Theory · Computer Science 2015-09-03 Manish Mandloi , Mohammed Azahar Hussain , Vimal Bhatia

Linear processing in the spatial domain at the base stations (BSs) and at the users of MIMO cellular systems enables the control of both inter-cell and intra-cell interference. A number of iterative algorithms have been proposed that allow…

Information Theory · Computer Science 2014-08-25 Tariq Elkourdi , Osvaldo Simeone , Onur Sahin , Shlomo Shamai

This paper proposes a novel scheme for mitigating strong interferences, which is applicable to various wireless scenarios, including full-duplex wireless communications and uncoordinated heterogenous networks. As strong interferences can…

Signal Processing · Electrical Eng. & Systems 2021-03-05 Wei Zhang , Yi Jiang , Bin Zhou , Die Hu

Electromagnetic (EM) multipath interference is difficult to address with passive approaches due to two physical restrictions - the shared frequency of the initial and interfering signals and their variable incident angles. Thus, to address…

In underwater acoustic (UWA) random access communication networks with multiple users and data packet transmissions, the packet collisions are the main cause of the network performance degradation. The aim of this paper is to investigate…

Signal Processing · Electrical Eng. & Systems 2025-01-10 Yuriy Zakharov , Lu Shen , Benjamin Henson , Nils Morozs , Paul D. Mitchell

Constructive interference (CI) precoding, which converts the harmful multi-user interference into beneficial signals, is a promising and efficient interference management scheme in multi-antenna communication systems. However, CI-based…

Signal Processing · Electrical Eng. & Systems 2024-05-28 Mu Liang , Ang Li , Xiaoyan Hu , Christos Masouros
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