scholarly journals Performance analysis of system with triple selection combining over correlated Weibull fading channel in the presence of cochannel interference

2010 ◽  
Vol 23 (1) ◽  
pp. 87-96 ◽  
Author(s):  
Petar Spalevic ◽  
Nikola Sekulovic ◽  
Georgios Zachos
Keyword(s):  
Fading Channels ◽  
Cochannel Interference ◽  
Cumulative Distribution ◽  
Performance Criteria ◽  
Selection Combining ◽  
Wireless System ◽  
Average Output ◽  
Weibull Fading ◽  
Average Bit Error Probability ◽  
Correlated Weibull Fading

In this paper, closed-form expressions for probability density function (PDF) and cumulative distribution function (CDF) of the signal-to-interference ratio (SIR) at the output of the triple selection combining (SC) receiver over correlated Weibull fading channels in the presence of correlated cochannel interference (CCI) are derived. These expressions are used to study wireless system performance criteria, such as outage probability, average bit error probability and average output SIR. .

scholarly journals PERFORMANCE COMPARISON OF DUAL-BRANCH AND TRIPLE-BRANCH SELECTION DIVERSITY RECEIVER BASED ON DESIRED SIGNAL ALGORITHM OVER CORRELATED WEIBULL FADING CHANNELS

2017 ◽  
Vol 16 (1) ◽  
pp. 15
Author(s):  
Aleksandra Golubović ◽  
Nikola Sekulović ◽  
Mihajlo Stefanović ◽  
Dejan Milić
Keyword(s):  
Fading Channels ◽  
Performance Measure ◽  
Performance Comparison ◽  
Cochannel Interference ◽  
Selection Combining ◽  
Interference Signal ◽  
Weibull Fading ◽  
Weibull Fading Channels ◽  
Diversity Receiver ◽  
Correlated Weibull Fading

As an important performance measure, in this paper the outage probability of dual- and triple-branch selection combining (SC) diversity system is compared. The analyzed system works over correlated Weibull fading channels in the presence of cochannel interference (CCI) where the output signal choice is done using desired signal algorithm. Results are graphically presented showing the influence of number of diversity branches, correlation coefficient and ratio of average powers of desired and interference signal.

scholarly journals Performance analysis of dual-branch selection diversity system using novel mathematical approach

2017 ◽  
Vol 30 (2) ◽  
pp. 235-244
Author(s):  
Aleksandra Golubovic ◽  
Nikola Sekulovic ◽  
Mihajlo Stefanovic ◽  
Dejan Milic
Keyword(s):  
Performance Analysis ◽  
Fading Channels ◽  
System Performance ◽  
Selection Combining ◽  
Mathematical Approach ◽  
Average Output ◽  
Weibull Fading ◽  
Average Bit Error Probability ◽  
Receiver Performance ◽  
Diversity Receiver

In this paper, novel mathematical approach for evaluation of probability density function (PDF) of instantaneous signal-to-interference ratio (SIR) at the receiver output in interference-limited environment is proposed. Dual-branch selection combining (SC) receiver operating over correlated Weibull fading channels applying SIR algorithm is considered. Analytical expression for joint PDF of desired signal and interference at the receiver output is derived and used for evaluation of PDF of instantaneous SIR. The expression for PDF of SIR is used for system performance analysis via outage probability, average bit error probability (ABEP) and average output SIR as system performance measures. Numerical results are graphically presented showing the effects of fading severity, average SIR at the input and level of correlation on the diversity receiver performance. In addition, results obtained for the PDF of instantaneous SIR in this paper, are compared to the results when the PDF of instantaneous SIR is directly calculated.

Multiple Co-Channel Interferers Influence on Selection Combining over Correlated Weibull Fading Channels

Frequenz ◽  
2012 ◽  
Vol 66 (3-4) ◽  
Author(s):  
Ivana Petrovic ◽  
Zorica Nikolic ◽  
Mihajlo Stefanovic ◽  
Stefan Panic ◽  
Petar Spalevic ◽  
...  
Keyword(s):  
Fading Channels ◽  
Selection Combining ◽  
Weibull Fading ◽  
Weibull Fading Channels ◽  
Correlated Weibull Fading

scholarly journals On the Performance Analysis of Switched Diversity Combining Receivers over Fisher–Snedecor ℱ Composite Fading Channels

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 3014
Author(s):  
Weijun Cheng ◽  
Xiaoting Wang ◽  
Tengfei Ma ◽  
Gang Wang
Keyword(s):  
Fading Channels ◽  
Error Probability ◽  
Signal To Noise Ratio ◽  
Multipath Fading ◽  
Performance Criteria ◽  
Statistical Characteristics ◽  
Diversity Combining ◽  
Systematic Analysis ◽  
Average Bit Error Probability ◽  
Switched Diversity Combining

In some emerging wireless applications, such as wearable communication and low-power sensor network applications, wireless devices or nodes not only require simple physical implementation approaches but also require certain reliable receiver techniques to overcome the effects of multipath or shadowed fading. Switched diversity combining (SDC) systems could be a simple and promising solution to the above requirements. Recently, a Fisher–Snedecor ℱ composited fading model has gained much interest because of its modeling accuracy and calculation tractability. However, the performance of SDC systems over ℱ fading channels has not yet been analyzed in the open literature. To this end, this paper presents a systematic analysis of SDC systems over ℱ fading channels, including dual-branch switch-and-stay combining (SSC), multibranch switch-and examine combining (SEC), and SEC with post-examining selection (SECps) systems. We first investigate the statistical characteristics of univariate and bivariate ℱ distributions. Then, these statistical expressions are introduced into the above SDC systems and the statistical metrics of the output signal-to-noise ratio (SNR) for these systems are deduced in different ℱ fading scenarios. Thirdly, certain exact and novel expressions of performance criteria, such as the outage probability, the average bit error probability and average symbol error probability, as well as the average channel capacity for SSC, SEC, and SECps are derived. To find the optimum performance, optimal analysis is performed for the independent and identically distributed cases. Finally, numerical evaluation and simulations are carried out to demonstrate the validity of the theoretical analysis under various ℱ fading scenarios. According to the obtained results, the multipath fading parameter has more influence on the performance of SDC systems than the shadowing parameter, the correlation coefficient, or the average SNR. Importantly, the SDC systems can provide switched diversity gains only when the switching threshold is not too large or too small compared to the average SNR.

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