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This paper describes an approach for half-duplex cooperative transmission in a classical three-node relay channel. Assuming availability of channel state information at nodes, the approach makes use of this information to optimize distinct…

信息论 · 计算机科学 2011-11-09 Tan F. Wong , Tat M. Lok , John M. Shea

In this paper, a distributed turbo-like coding scheme for wireless networks with relays is proposed. We consider a scenario where multiple sources communicate with a single destination with the help of a relay. The proposed scheme can be…

信息论 · 计算机科学 2009-10-13 Roua Youssef , Alexandre Graell i Amat

This paper studies Gaussian Two-Way Relay Channel where two communication nodes exchange messages with each other via a relay. It is assumed that all nodes operate in half duplex mode without any direct link between the communication nodes.…

信息论 · 计算机科学 2016-11-17 Sinda Smirani , Mohamed Kamoun , Mireille Sarkiss , Abdellatif Zaidi , Pierre Duhamel

Wireless sensor networks hold a great potential in the deployment of several applications of a paramount importance in our daily life. Video sensors are able to improve a number of these applications where new approaches adapted to both…

网络与互联网体系结构 · 计算机科学 2009-01-18 Moufida Maimour , Congduc Pham , Julien Amelot

This paper investigates low-latency streaming codes for a three-node relay network. The source transmits a sequence of messages (streaming messages) to the destination through the relay between them, where the first-hop channel from the…

信息论 · 计算机科学 2022-03-14 Silas L. Fong , Ashish Khisti , Baochun Li , Wai-Tian Tan , Xiaoqing Zhu , John Apostolopoulos

We analyze coding for energy efficiency in relay channels at a fixed source rate. We first propose a half-duplex decode-forward coding scheme for the Gaussian relay channel. We then derive three optimal sets of power allocation, which…

信息论 · 计算机科学 2016-11-18 Fanny Parzysz , Mai Vu , François Gagnon

We consider a system in which two users communicate with a destination with the help of a half-duplex relay. Based on the compute-and-forward scheme, we develop and evaluate the performance of coding strategies that are of network coding…

信息论 · 计算机科学 2013-06-11 Mohieddine El Soussi , Abdellatif Zaidi , Luc Vandendorpe

We analyze the performance of a system composed of two interfering point-to-point links where the transmitters can exploit a common relay to improve their individual transmission rate. When the relay uses the amplify-and-forward protocol we…

信息论 · 计算机科学 2009-04-20 Brice Djeumou , Elena Veronica Belmega , Samson Lasaulce

We consider a wireless communication system, where a transmitting source is assisted by both a reconfigurable intelligent reflecting surface (IRS) and a decode-and-forward half-duplex relay (hybrid IRS-relay scheme) to communicate with a…

信号处理 · 电气工程与系统科学 2021-09-20 Alberto Rech , Federico Moretto , Stefano Tomasin

In this paper, we consider a wireless powered multi-relay network in which a multi-antenna hybrid access point underlaying a cellular system transmits information to distant receivers. Multiple relays capable of energy harvesting are…

信息论 · 计算机科学 2018-10-23 Jing Xu , Yuze Zou , Shimin Gong , Lin Gao , Dusit Niyato , Wenqing Cheng

We consider the broadcast relay channel (BRC), where a single source transmits to multiple destinations with the help of a relay, in the limit of a large bandwidth. We address the problem of optimal relay positioning and power allocations…

信息论 · 计算机科学 2011-01-17 Mohit Thakur , Nadia Fawaz , Muriel Médard

In a bi-directional relay channel, two nodes wish to exchange independent messages over a shared wireless half-duplex channel with the help of a relay. In this paper, we derive achievable rate regions for four new half-duplex protocols and…

信息论 · 计算机科学 2009-05-16 Sang Joon Kim , Natasha Devroye , Patrick Mitran , Vahid Tarokh

To deal with the explosive growth of mobile traffic, millimeter-wave (mmWave) communications with abundant bandwidth resources have been applied to vehicular networks. As mmWave signal is sensitive to blockage, we introduce the unmanned…

信息论 · 计算机科学 2023-03-07 Jing Li , Yong Niu , Hao Wu , Bo Ai , Ruisi He , Ning Wang , Sheng Chen

In this letter the performance of multiple relay channels is analyzed for the situation in which multiple antennas are deployed only at the relays. The simple repetition-coded decodeand- forward protocol with two different antenna…

信息论 · 计算机科学 2008-02-20 Yijia Fan , Abdulkareem Adinoyi , John S Thompson , Halim Yanikomeroglu , H. Vincent Poor

Multimedia streaming applications with stringent QoS requirements in 60GHz mmWave wireless personal area networks (WPANs) demand high rate and low latency data transfer as well as low service disruption. In this paper, we consider the…

网络与互联网体系结构 · 计算机科学 2015-03-20 Guanbo Zheng , Cunqing Hua , Rong Zheng , Qixin Wang

This paper studies the joint optimization problem of two-way relay beamforming, the receiver power splitting (PS) ratio as well as the transmit power at the sources to maximize the achievable sum-rate of a simultaneous wireless information…

信息论 · 计算机科学 2016-10-19 Alexander A. Okandeji , Muhammad R. A. Khandaker , Kai-Kit Wong , Zhongbin Zheng

In this report, we investigate the data transmission model in which a sequence of data is broadcasted to a number of receivers. The receivers, which have different channel capacities, wish to decode the data sequentially at different rates.…

信息论 · 计算机科学 2012-10-15 Cheuk Ting LI

We provide a geometric solution to the problem of optimal relay positioning to maximize the multicast rate for low-SNR networks. The networks we consider, consist of a single source, multiple receivers and the only intermediate and…

信息论 · 计算机科学 2011-06-02 Mohit Thakur , Nadia Fawaz , Muriel Médard

This paper investigates the performance of streaming codes in low-latency applications over a multi-link three-node relayed network. The source wishes to transmit a sequence of messages to the destination through a relay. Each message must…

信息论 · 计算机科学 2022-01-19 Gustavo Kasper Facenda , Elad Domanovitz , Ashish Khisti , Wai-Tian Tan , John Apostolopoulos

In order to follow up with mission-critical applications, new features need to be carried to satisfy a reliable communication with reduced latency. With this regard, this paper proposes a low latency cooperative transmission scheme, where…

信息论 · 计算机科学 2018-02-13 Fatima Ezzahra Airod , Houda Chafnaji , Halim Yanikomeroglu