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Cooperation among mobile devices and utilizing multiple interfaces such as cellular and local area links simultaneously are promising to meet the increasing throughput demand over cellular links. In particular, when mobile devices are in…

信息论 · 计算机科学 2015-05-22 Yasaman Keshtkarjahromi , Hulya Seferoglu , Rashid Ansari , Ashfaq Khokhar

In this work, we derive achievable rate regions for the three-user interference channels with asymmetric transmitter cooperation and various decoding capabilities at the receivers. The three-user channel facilitates different ways of…

信息论 · 计算机科学 2011-02-23 K. G. Nagananda , Chandra R. Murthy

We consider a relay network with two relays and two feedback links from the relays to the sender. To obtain the achievability results, we use the compress-and-forward and the decode-and-forward strategies to superimpose facility and…

信息论 · 计算机科学 2011-11-11 Mohammad Ali Tebbi , Mahtab Mirmohseni , Mahmoud Ahmadian Attari , Mohammad Reza Aref

The capacity of a class of multi-way relay channels, where L users communicate via a relay (at possibly different rates), is derived for the case where the channel outputs are modular sums of the channel inputs and the receiver noise. The…

信息论 · 计算机科学 2011-11-16 Lawrence Ong , Sarah J. Johnson , Christopher M. Kellett

Two-hop security communication with an eavesdropper in wireless environment is a hot research direction. The basic idea is that the destination, simultaneously with the source, sends a jamming signal to interfere the eavesdropper near to or…

信息论 · 计算机科学 2013-10-03 Zhen Qu , Shengli Zhang , Mingjun Dai , Hui Wang

It is a fundamental problem to analyse the performance bound of multiple-input multiple-output (MIMO) dual-functional radar-communication (DFRC) systems. To this end, we derive a performance bound on the communication function under a…

信息论 · 计算机科学 2022-11-15 Ziheng Zheng , Xiang Liu , Tianyao Huang , Yimin Liu , Yonina C. Eldar

Two-way relay is potentially an effective approach to spectrum sharing and aggregation by allowing simultaneous bidirectional transmissions between source-destinations pairs. This paper studies the two-way $2\times2\times2$ relay network, a…

信息论 · 计算机科学 2017-11-03 Mehdi Ashraphijuo , Vaneet Aggarwal , Xiaodong Wang

In this paper, we contribute to the theoretical understanding, the design, and the performance evaluation of multi-source multi-relay network-coded cooperative diversity protocols. These protocols are useful to counteract the spectral…

信息论 · 计算机科学 2016-11-17 Marco Di Renzo , Michela Iezzi , Fabio Graziosi

This work considers load-balance control among the relays under the secure transmission protocol via relay cooperation in two-hop wireless networks without the information of both eavesdropper channels and locations. The available two-hop…

信息论 · 计算机科学 2013-01-01 Yulong Shen , Xiaohong Jiang , Jianfeng Ma

In this paper, we consider a two-hop molecular communication network consisting of one nanotransmitter, one nanoreceiver, and one nanotransceiver acting as a relay. We consider two different schemes for relaying to improve the range of…

信息论 · 计算机科学 2016-11-17 Arman Ahmadzadeh , Adam Noel , Robert Schober

We propose a two-layer coding architecture for communication of multiple users over a shared slotted medium enabling joint collision resolution and decoding. Each user first encodes its information bits with an outer code for reliability,…

信息论 · 计算机科学 2020-08-18 MohammadReza Ebrahimi , Farshad Lahouti , Victoria Kostina

We consider a bidirectional network in which two users exchange information with the help of a buffer-aided relay. In such a network without direct link between user 1 and user 2, there exist six possible transmission modes, i.e., four…

信息论 · 计算机科学 2013-06-13 Vahid Jamali , Nikola Zlatanov , Aissa Ikhlef , Robert Schober

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

Consider a relay cascade, i.e. a network where a source node, a sink node and a certain number of intermediate source/relay nodes are arranged on a line and where adjacent node pairs are connected by error-free (q+1)-ary pipes. Suppose the…

信息论 · 计算机科学 2016-11-17 Tobias Lutz , Christoph Hausl , Ralf Kötter

An information measure based on fractional partitions of a set is used to derive a general dependence balance inequality for communication. This inequality is used to obtain new upper bounds on reliable and secret rates for multiterminal…

信息论 · 计算机科学 2026-04-14 Amin Gohari , Gerhard Kramer

This paper investigates the maximal secret communication rate over a wiretap channel subject to reliability and secrecy constraints at a given blocklength. New achievability and converse bounds are derived, which are uniformly tighter than…

信息论 · 计算机科学 2017-06-14 Wei Yang , Rafael F. Schaefer , H. Vincent Poor

Cooperative techniques have been shown to significantly improve the performance of wireless systems. Despite being a mature technology in single communication link scenarios, their implementation in wider, and practical, networks poses…

网络与互联网体系结构 · 计算机科学 2012-06-04 Andrea Munari , Marco Levorato , Michele Zorzi

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…

信息论 · 计算机科学 2016-11-17 Zhu Han , Xin Zhang , H. Vincent Poor

This paper studies a cooperative cognitive radio network where two primary users (PUs) exchange information with the help of a secondary user (SU) that is equipped with multiple antennas and in return, the SU superimposes its own messages…

信息论 · 计算机科学 2015-06-11 Rui Wang , Meixia Tao , Yuan Liu

Due to the short and bursty incoming messages, channel access activities in a wireless random access system are often fractional. The lack of frequent data support consequently makes it difficult for the receiver to estimate and track the…

信息论 · 计算机科学 2011-10-11 Zheng Wang , Jie Luo