Electrical Engineering: Recent submissions
Now showing items 1321-1340 of 2821
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Dynamic optimization of LTE pilot scattering based on channel estimation
( IEEE , 2012 , Conference)A dynamic optimization of the pilot scattering for Long Term Evolution (LTE) downlink system is introduced. This optimization is based on channel parameters estimations to optimize the number of pilots used in the transmission ... -
Joint hierarchical modulation and network coding for two way relay networks
( IEEE , 2012 , Conference)The performance of a joint Hierarchical Modulation (HM) and Network Coding (NC) scheme for two way relay networks is introduced and evaluated in this paper. The proposed scheme uses selective relaying based on a signal-to-noise ... -
Sequential random selection relaying for energy efficient wireless sensor networks
( IEEE , 2010 , Conference)In a wireless sensor network with relaying capability, intermediate relay nodes are with limited energy budget. To maximize lifetime of relay nodes, selective relay strategies, requiring full channel state information ... -
Performance analysis of selective cooperation in underlay cognitive networks over Rayleigh channels
( IEEE , 2011 , Conference)Underlay cognitive networks should follow strict interference thresholds to operate in parallel with primary networks. This constraint limits their transmission power and eventually the area of coverage. Therefore, it is ... -
Mobile wireless sensor networks applied to the survey of water infrastructures
( IEEE , 2010 , Conference)The paper reports our last advances in the realization of mobile wireless sensor networks (WSNs), able to reveal unknown tracks and leakages within underground pipelines used to distribute water. This WSN technology is ... -
Performance analysis of best relay selection scheme for fixed gain cooperative networks in non-identical Nakagami-m channels
( IEEE , 2010 , Conference)Selecting the best relay among all the relays ready to cooperate saves system resources and utilizes the available bandwidth more efficiently compared to the regular all-relay cooperation. This scheme also achieves the ... -
Joint statistics of partial sums of ordered exponential variates and performance of GSC RAKE receivers over rayleigh fading channel
( IEEE , 2011 , Article)Spread spectrum receivers with generalized selection combining (GSC) RAKE reception were proposed and have been studied as alternatives to the classical two fundamental schemes: maximal ratio combining and selection combining ... -
On the performance of advanced QoS-aware packet scheduling for multiantenna packet radio systems
( IEEE , 2010 , Conference)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 relay assignment in network-coded cooperative systems
( IEEE , 2011 , Article)We consider in this paper relay assignment for cooperative systems with multiple two-way relay channels. The nodes corresponding to one two-way relay channel (henceforth referred to as pair) communicate with each other ... -
Threshold-based relaying in coded cooperative networks
( IEEE , 2011 , Article)In cooperative communications, error propagation at the relay nodes degrades the diversity order of the system. To combat that effect, we present a novel technique to control error propagation at the relays, which is ... -
Exact closed form expressions for outage probability of GSC receivers over Rayleigh fading channel subject to self-interference
( IEEE , 2010 , Conference)Previous work on performance analyses of generalized selection combining (GSC) RAKE receivers based on the signal to noise ratio focused on the development of methodologies to derive exact closed-form expressions for various ... -
User cooperation schemes in the soft handover regions
( IEEE , 2009 , Conference)This paper examines the effect of relay-assisted soft handover on the performance of the uplink communication in the third generation mobile networks. We focus on users which are traveling over two cell boundaries in a ... -
Performance of relay-assisted soft handover
( IEEE , 2009 , Conference)This paper examines the effect of relay-assisted soft handover on the performance of the uplink communication in the third generation mobile networks. We focus on users which are traveling over two cell boundaries in a ... -
Development of a remote lab for electrical engineering program
( IEEE Computer Society , 2009 , Conference)A remote lab for electrical engineering experiments has been designed and implemented. This has been intended as a platform that supports existing traditional labs by offering lab experiments that serve some of the student ... -
Research in undergraduate education at Qatar University: EE department experience
( IEEE , 2007 , Conference)This paper presents the research efforts taking place at Qatar University, the only national university in Qatar. Being a teaching institute, conducting research faces many challenges. The paper focuses on the experience ... -
Development of a remote lab for electrical engineering program
( IEEE Computer Society , 2009 , Conference)A remote lab for electrical engineering experiments has been designed and implemented. This has been intended as a platform that supports existing traditional labs by offering lab experiments that serve some of the student ... -
Channel assignment of microcellular mobile radio networks
( Institute of Electrical and Electronics Engineers Inc. , 2006 , Conference)This paper addresses the analytical and simulation modeling of non overlapping microcells with both non-prioritized and prioritized handover schemes. The network performance is analyzed in terms of the analytical results ... -
Power loading algorithms for SEC diversity schemes
( IEEE , 2007 , Conference)Switch and Examine Combing (SEC) diversity scheme is one of the simplest diversity schemes to combat fading. When the power used for probing the channels in this scheme is fixed, it can be higher than what is actually ... -
Average outage duration of multihop communication systems with regenerative relays
( IEEE , 2005 , Article)Closed-form expressions for the average outage duration (AOD) of multihop regenerative communication systems over generalized fading channels are presented. Both noise-limited and interference-limited systems are studied. ... -
On the capacity of cooperative diversity systems with adaptive modulation
( IEEE , 2005 , Conference)In recent years, cooperative diversity systems have gained increased attention in the literature as a new way of combating the effect of signal fading. In this paper, we investigate the performance of these systems when ...