Browsing by Subject "Rayleigh fading"
Now showing items 1-19 of 19
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A downlink index-modulation based nonorthogonal multiple access scheme
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)Massive connectivity and spectral efficiency are among the main defining terms of the future communications era. Therefore, revolutionary technologies are required to keep up with the connectivity and spectrum demands. ... -
A performance study of dual-hop transmissions with fixed gain relays
( IEEE , 2004 , Article)This letter presents a study on the end-to-end performance of dual-hop wireless communication systems equipped with nonregenerative fixed gain relays and operating over flat Rayleigh-fading channels. More specifically, it ... -
Effective area spectral efficiency for wireless communication networks with interference management
( Springer International Publishing , 2015 , Article)In this paper, we introduce a new metric, namely, effective area spectral efficiency (EASE), to quantify the spectral efficiency as well as the spatial properties of point-to-point transmission systems and decode and forward ... -
End-to-end performance of transmission systems with relays over Rayleigh-fading channels
( IEEE , 2003 , Article)End-to-end performance of two-hops wireless communication systems with nonregenerative relays over flat Rayleigh-fading channels is presented. This is accomplished by deriving and applying some new closed-form expressions ... -
Exact capture probability analysis of GSC receivers over Rayleigh fading channel
( IEEE , 2010 , Conference Paper)For third generation systems and ultrawideband systems, RAKE receivers have been introduced due to the advantage of RAKE receivers which is their ability to combine different replicas of the transmitted signal arriving at ... -
Exact closed form expressions for outage probability of GSC receivers over Rayleigh fading channel subject to self-interference
( IEEE , 2010 , Conference Paper)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 ... -
Generalized area spectral efficiency of wireless ad-hoc networks over Rayleigh fading
( Korean Institute of Communication Sciences , 2020 , Article)Generalized area spectral efficiency (GASE) was introduced as a metric to quantify the spectral utilization efficiency of wireless transmissions. Unlike other performance metrics, GASE takes into account the spatial property ... -
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 ergodic capacity of wireless transmission subject to poisson distributed interferers over rayleigh fading channels
( IEEE , 2013 , Conference Paper)Poisson point process has been widely adopted in the analysis of co-channel interference in dense frequency reuse systems. With the decaying power law, the aggregate co-channel interference in Poisson field can be viewed ... -
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 ... -
On the capacity of cooperative diversity systems with adaptive modulation
( IEEE , 2005 , Conference Paper)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 ... -
Optimal power allocation for relayed transmissions over Rayleigh-fading channels
( IEEE , 2004 , Article)Relayed transmission is a way to attain broader coverage by splitting the communication link from the source to the destination into several shorter links/hops. One of the main advantages of this communication technique ... -
Optimal power consumption based on new power spectral efficiency metric for wireless cellular networks
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)In this paper, we introduce a new power spectral efficiency (PSE) metric, to quantify the spectral efficiency and the total required power to cover a certain area with a predefined received signal quality. This metric ... -
Performance analysis of cooperative communication system with feedback delay and channel estimation error
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)In this paper, we investigate the impact of feedback delay and channel estimation error (CEE) on the performance of wireless multi-user decode-and-forward (DF) relay systems in independent and non identically distributed ... -
Performance enhancement of relay-assisted communications via binary feedback
( IEEE , 2004 , Conference Paper)This paper proposes a modified two-hop wireless communication system and studies its performance. The modified system has a reliable feedback channel that carries a binary signal from the receiver to inform the transmitter ... -
Performance of OFDM with M-QAM modulation and optimal loading over rayleigh fading channels
( IEEE , 2004 , Conference Paper)We present optimum bit and power loading algorithms for orthogonal frequency division multiplexing (OFDM) systems using an M-ary quadrature amplitude modulation (M-QAM) scheme. Several scenarios for the amount of channel ... -
Relay assignment in network-coded cooperative systems with M-PSK modulation over asymmetric channels
( IEEE , 2010 , Conference Paper)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 ... -
Secrecy Performance Analysis of Cooperative NOMA system with multiple DF Relays
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)In this paper, we derive the Secrecy Outage Probability (SOP) and Strictly Positive Secrecy Capacity (SPSC) of cooperative Non Orthogonal Multiple Access (NOMA) in the presence of K Decode and Forward (DF) relays and ... -
Time-frequency compressed spectrum sensing in cognitive radios
( Institute of Electrical and Electronics Engineers Inc. , 2013 , Conference Paper)In this paper, we investigate the use of time-frequency analysis for improvement of spectrum sensing in cognitive radios and exploit compressed sensing (sampling) to reduce the extremely high sampling rate of signal in ...