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This letter studies the outage performance of cooperative non-orthogonal multiple access (NOMA) network with the help of an amplify-and-forward relay. An accurate closed-form approximation for the exact outage probability is derived. Based…

Information Theory · Computer Science 2017-03-14 Xuesong Liang , Yongpeng Wu , Derrick Wing Kwan Ng , Yiping Zuo , Shi Jin , Hongbo Zhu

This paper analyzes the outage probability of orthogonal time frequency space (OTFS) modulation under a lossy communication scenario. First of all, we introduce the channel model and the vector form representation of OTFS this paper uses.…

Information Theory · Computer Science 2024-10-03 Xin Zhang , Wensheng Lin , Lixin Li , Fucheng Yang , Zhu Han , Tad Matsumoto

In this paper, relay selection is considered to enhance security of a cooperative system with multiple threshold-selection decode-and-forward (DF) relays. Threshold-selection DF relays are the relays in which a predefined signal-to-noise…

Signal Processing · Electrical Eng. & Systems 2018-03-05 C. Kundu , T. M. N. Ngatched , O. A. Dobre

In this paper, we analyze the outage performance of two multicarrier relay selection schemes, i.e. bulk and per-subcarrier selections, for two-hop orthogonal frequency-division multiplexing (OFDM) systems. To provide a comprehensive…

Information Theory · Computer Science 2017-08-22 Shuping Dang , Justin P. Coon , Gaojie Chen , David E. Simmons

In this paper we consider the robust secure beamformer design for MISO wiretap channels. Assume that the eavesdroppers' channels are only partially available at the transmitter, we seek to maximize the secrecy rate under the transmit power…

Information Theory · Computer Science 2013-10-29 Shuai Ma , Mingyi Hong , Enbin Song , Xiangfeng Wang , Dechun Sun

Conventional beamforming is based on channel estimation, which can be computationally intensive and inaccurate when the antenna array is large. In this work, we study the outage probability of positioning-assisted beamforming systems.…

Information Theory · Computer Science 2022-04-12 Bingcheng Zhu , Zaichen Zhang , Julian Cheng

This paper investigates the outage probability and the throughput of relay networks with wireless information and energy transfer where the relays harvest energy from the transmitted radio-frequency signal of the source. Considering…

Information Theory · Computer Science 2016-07-26 Mahdi Haghifam , Behrooz Makki , Masoumeh Nasiri-Kenari , Tommy Svensson

This paper investigates the outage performance of overhearing amplify-and-forward (AF) cooperative relaying, where a source transmits information to its destination through multiple helping overhearing AF relays with space-time network…

Information Theory · Computer Science 2015-01-06 Yu Zhang , Ke Xiong

We consider a half-duplex wireless relay network with hybrid-automatic retransmission request (HARQ) and Rayleigh fading channels. In this paper, we analyze the outage probability of the multi-relay delay-limited HARQ system with…

Information Theory · Computer Science 2012-02-14 Behrouz Maham , Aydin Behnad , Merouane Debbah

In this paper, we investigate the secrecy performance of underlay cognitive small-cell radio network with unreliable backhaul connections. The secondary cognitive small-cell transmitters are connected to macro base station by wireless…

Signal Processing · Electrical Eng. & Systems 2021-03-11 Jinghua Zhang , Chinmoy Kundu , Emi Garcia-Palacios

In this letter, we analyze the secrecy outage probability (SOP) over fluctuating two-ray fading channels but with a different definition from the one adopted in [5]. Following the new defined SOP, we derive an analytical closed-form…

Signal Processing · Electrical Eng. & Systems 2019-05-30 Hui Zhao , Liang Yang , Gaofeng Pan , Mohamed-Slim Alouini

Recently, three useful secrecy metrics based on the partial secrecy regime were proposed to analyze secure transmissions on wireless systems over quasi-static fading channels, namely: generalized secrecy outage probability, average…

Signal Processing · Electrical Eng. & Systems 2020-04-14 Diana P. M. Osorio , Hirley Alves , Edgar E. B. Olivo

This paper addresses the problem of outage characterization of an ambient backscatter communication system with a pair of passive tag and reader. In particular, an exact expression for the effective channel distribution is derived. Then,…

Information Theory · Computer Science 2019-05-29 Wenjing Zhao , Gongpu Wang , Saman Atapattu , Chintha Tellambura

In this paper exact closed-form expressions are derived for the outage probability (OP) in scenarios where both the signal of interest (SOI) and the interfering signals experience {\eta}-{\mu} fading and the background noise can be…

Information Theory · Computer Science 2024-10-30 Jose F. Paris

In this paper, the outage probability and outage-based beam design for multiple-input multiple-output (MIMO) interference channels are considered. First, closed-form expressions for the outage probability in MIMO interference channels are…

Information Theory · Computer Science 2016-11-17 Juho Park , Youngchul Sung , Donggun Kim , H. Vincent Poor

An opportunistic DF-AF selection relaying scheme with maximal received signal-to-noise ratio (SNR) at the destination is investigated in this paper. The outage probability of the opportunistic DF-AF selection relaying scheme over Nakagami-m…

Information Theory · Computer Science 2016-11-17 Tian Zhang , Wei Chen , Zhigang Cao

We investigate the secure communications over correlated wiretap Rayleigh fading channels assuming the full channel state information (CSI) available. Based on the information theoretic formulation, we derive closed-form expressions for the…

Information Theory · Computer Science 2010-03-24 Xiaojun Sun , Chunming Zhao , Ming Jiang

In this work, we address the relay selection problem for the wireless powered communication networks, where the relays harvest energy from the source radio frequency signals. A single source-destination pair is considered without a direct…

Networking and Internet Architecture · Computer Science 2016-08-29 M. Majid Butt , Ioannis Krikidis , Nicola Marchetti

In this paper, we study the outage performance of simultaneous wireless information and power transfer (SWIP- T) based three-step two-way decode-and-forward (DF) relay networks, where both power-splitting (PS) and harvest-then-forward are…

Information Theory · Computer Science 2019-01-16 Yinghui Ye , Liqin Shi , Xiaoli Chu , Hailin Zhang , Guangyue Lu

Performance assessment and optimization for networks jointly performing caching, computing, and communication (3C) has recently drawn significant attention because many emerging applications require 3C functionality. However, studies in the…

Information Theory · Computer Science 2022-06-09 Ming-Chun Lee , Andreas F. Molisch