نتایج جستجو برای: outage probability

تعداد نتایج: 220840  

Journal: :IEEE Trans. Communications 2002
Srikrishna Bhashyam Ashutosh Sabharwal Behnaam Aazhang

Multiple antenna transmission and reception have been shown to significantly increase the achievable data rates of wireless systems. However, most of the existing analysis assumes perfect or no channel information at the receiver and transmitter. The performance gap between these extreme channel assumptions is large and most practical systems lie in between. Therefore, it is important to analyz...

Journal: :TIIS 2015
Guanyao Du Ke Xiong Yu Zhang Zhengding Qiu

Energy harvesting (EH) and network coding (NC) have emerged as two promising technologies for future wireless networks. In this paper, we combine them together in a single system and then present a time switching-based network coding relaying (TSNCR) protocol for the two-way relay system, where an energy constrained relay harvests energy from the transmitted radio frequency (RF) signals from tw...

2013
Anjana Jain P. D. Vyavahare L. D. Arya

Finite State Markov (FSM) models for fading channels need to be revised for more realistic design of emerging mobile networks and their performance evaluation. In this paper a Outage Tolerant FSM Model (OTFSM) is proposed based on concept of certain tolerable outage times, which are defined as ‘Tolerance time’. These are the short duration of outage time which is considered as satisfactory time...

Journal: :CoRR 2015
Hongwu Liu Kyeong Jin Kim Kyung Sup Kwak

This paper investigates power splitting for fullduplex relay networks with wireless information and energy transfer. By applying power splitting as a relay transceiver architecture, the full duplex information relaying can be powered by energy harvested from the source-emitted radio frequency signal. In order to minimize outage probability, power splitting ratios have been dynamically optimized...

Journal: :CoRR 2011
Mohammed Jabi Leszek Szczecinski Mustapha Benjillali

We propose a simple and accurate method to evaluate the outage probability at the output of arbitrarily fading L-branch diversity combining receiver. The method is based on the saddlepoint approximation, which only requires the knowledge of the moment generating functions of the signal-to-noise ratio at the output of each diversity branch. In addition, we show that the obtained results reduce t...

2001
Rudolf Mathar Marie-Ange Remiche

Abstracr--In this paper, we deal with the uplink outage probability for a UMTS cellular network at a reference base station equipped with a smart antenna. Users are assumed to be distributed according to a planar Poisson point proce:rs. Their respective transmission rates are modeled by independent random variables. This leads to a compound Poisson process for the total data rate to be served i...

2014
Amal Hyadi Mustapha Benjillali Mohamed-Slim Alouini

In this paper, we analyze the outage behavior of decode-and-forward relaying in the context of selective two-way cooperative systems. First, a new relay selection metric is proposed to take into consideration both transmission rates and instantaneous link conditions between cooperating nodes. Afterwards, the outage probability of the proposed system is derived for Nakagami-m fading channels in ...

Journal: :JCM 2013
Jia Liu Guixia Kang Ying Zhu Ping Xie

In spectrum sharing systems, a secondary user (SU) is permitted to share frequency bands with primary user (PU) as long as its transmission does not interfere with the PU’s communication. In this paper, the outage probability is investigated for the physical-layer network coding (PNC) based cognitive two-way relay network over Nakagami-m fading channel. By applying the interference temperature ...

Journal: :EURASIP J. Wireless Comm. and Networking 2012
Jaeyoung Lee Hyundong Shin Joon T. A. E. Kim Jun Heo

To account for randomly distributed nodes in a wireless ad hoc network, the transmission capacity is defined as the number of successful transmissions taking place in the network per unit area under an outage constraint. In this paper, we analyze the transmission capacity for dual-hop relaying in a wireless ad hoc network in the presence of both cochannel interference and thermal noise, where i...

Journal: :JCM 2014
Shuai Li Ping Li Zhiquan Bai Peng Gao Gong Peng

—In this paper, aiming to minimize the system outage probability in the condition of limited total power consumption, we study the optimal power allocation and relay positioning of the opportunistic incremental Amplify-and-Forward (OIAF) cooperative system over Rayleigh fading channels with the utilization of convex optimization theory. The analysis of the outage probability and bit error rate...

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