Browsing Electrical Engineering by Title
Now showing items 1738-1757 of 2544
-
On the degrees of freedom of the cognitive broadcast channel
(2011 , Conference Paper)Cognitive broadcast channel, where two multiantenna transmitters communicate with their respective receivers, is considered. One of the transmitters is said to be cognitive (secondary) as it is assumed to know the messages ... -
On the degrees of freedom region of the M x N Interference Channel
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)In this paper, the K-user MIMO interference channel is considered. The asymmetric DoF region for the channel is studied. The asymmetric DoF represent the set of all achievable DoF combinations {d1, d2,..., dK}. For the ... -
On the delay of finite buffered multi-hop relay wireless internet of things
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference Paper)The evolution of Internet of Things (IoT) as a new application in wireless networks mandates the utilization of wireless cooperative relaying to overcome the energy limitations of IoT devices. Multi-hop relaying is a ... -
On the delay/throughput-security tradeoff in wiretap TDMA networks with buffered nodes
( IEEE , 2019 , Article)In this paper, we investigate the tradeoff between security and throughput and between security and queuing delay in wiretap time-division multiple access (TDMA) networks. We derive a simple relationship, characterized by ... -
On the Design of a Relay-Assisted Network
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Article)A relay network composed of a source, a set of relays, and a destination is considered. A queueing framework is proposed, in which each node maintains a buffer to store its incoming traffic. An optimization-based formulation ... -
On the Design of Bit-Slice Processors
( Qatar University , 1988 , Article)In the past decade, fixed instruction microprocessors have evolved from 4 bits to 32 bits. Their compact design and relative low cost have made them very popular with design engineers. Their use extends into a lot of ... -
On the design of relay-assisted primary-secondary networks
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)The use of N cognitive relays to assist primary and secondary transmissions in a time-slotted cognitive setting with one primary user (PU) and one secondary user (SU) is investigated. An overlapped spectrum sensing strategy ... -
On the detection and estimation of correlated signal using circular antenna arrays
( IEEE , 2011 , Conference Paper)This paper presents the design and analysis of smart antenna systems used for the detection and estimation of correlated radio signals encountered in multipath environments using circular antenna arrays. The MUSIC algorithm ... -
On the development of flywheel storage systems for power system applications: A survey
( IEEE , 2012 , Conference Paper)Energy storage systems cannot be considered energy sources but having the ability of storing and discharging energy. They have a vital rule in the reliability and power quality of power systems. There are several energy ... -
On the DoF of X-Networks With Synergistic Alternating CSIT: A Step Towards Integrated Communication and Sensing
( IEEE Canada , 2022 , Article)The coexistence of communication and sensing services in the next wireless communication systems, i.e., beyond 5G and 6G systems, revive the central role of interference management techniques such as interference alignment, ... -
On the effects of combined atmospheric fading and misalignment on the hybrid FSO/RF transmission
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)Free-space optical (FSO) communication is known for its various impairments such as atmospheric turbulence and misalignment fading. In this paper, we study the performance of an FSO link operating under combined path loss ... -
On the Effects of Temperature on the Performances of FSO Transmission under Qatar's Climate
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)Strong atmospheric turbulence can highly affect the free space optical (FSO) link. In fact, the strength of turbulence is depending on weather factors where the temperature is considered as the main parameter increasing ... -
On the Ergodic Secrecy Rate of Massive MIMO Transmission with Partial Legitimate User CSI
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference Paper)In this paper, we consider the downlink transmission over a single-cell massive multiple-input-multiple-output (MIMO) system in the presence of multiple single-antenna eavesdroppers (massive MIMOME). We concentrate on the ... -
On the Error Performance of Non-orthogonal Multiple Access Systems
( IEEE Computer Society , 2020 , Conference Paper)Unlike orthogonal multiple access schemes, non-orthogonal (NOMA) ones have arisen as an appealing solution to meet the requirements of the upcoming era of massive connectivity. In NOMA schemes, users are allowed to ... -
On the Higher Order Statistics of the Channel Capacity in Dispersed Spectrum Cognitive Radio Systems Over Generalized Fading Channels
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)This work is devoted to the study of dispersed spectrum cognitive radio (CR) systems over independent and nonidentically distributed (i.n.i.d.) generalized fading channels. More specifically, this is performed in terms of ... -
On the more accurate channel model and positioning based on time-of-arrival for visible light localization
( SPIE , 2017 , Article)This paper presents an improved propagation channel model for the visible light in indoor environments. We employ this model to derive an enhanced positioning algorithm using on the relation between the time-of-arrivals ... -
On the performance of advanced QoS-aware packet scheduling for multiantenna packet radio systems
( IEEE , 2010 , Conference Paper)In this paper, we study and analyze the performance of advanced OFDM packet scheduling techniques with given QoS requirements under the 3GPP UTRAN Long Term Evolution (L TE) framework. Stemming from our previous studies ... -
On the Performance of Hadamard Ratio Detector-Based Spectrum Sensing for Cognitive Radios
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Article)We consider the problem of multiantenna spectrum sensing (SS) in cognitive radios (CRs) when the receivers are assumed to be uncalibrated across the antennas. The performance of the Hadamard Ratio Detector (HRD) is analyzed ... -
On the performance of LAP-based multiple-hop RF/FSO systems
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Article)In this paper, we propose a low-altitude aerial platform (LAP) based relaying system, where two LAPs serve as relays. More specifically, the air-to-ground links are assumed to be radio frequency (RF) channels experiencing ... -
On The Performance of Non-Orthogonal Multiple Access Considering Random Waypoint Mobility Model
( Institute of Electrical and Electronics Engineers Inc. , 2022 , Conference Paper)Non-Orthogonal Multiple Access (NOMA) has been widely considered as an efficient multiple access scheme for future wireless networks. This is due to the promising performance of NOMA in terms of the larger number of served ...
