205 Hits in 6.3 sec

BER Performance of OFDM-BPSK Over Nakagami Fading Channels

Mukesh Kumar Mishra, Neetu Sood, Ajay K Sharma
2011 International Journal of Computer Applications  
Finally simulations of OFDM signals are carried with Nakagami faded signal to understand the effect of channel fading and to obtain optimum value of m, n and q based on BER and SNR.  ...  In this paper, the Bit Error Rate (BER) performance of OFDM -BPSK system over flat Nakagami fading channels is analyzed. This model is versatile enough to represent fading.  ...  In [1] and [2] OFDM signal on Rayleigh faded channel and Rician fading channels are studied in depth and BER expression is derived in frequency selective channels.  ... 
doi:10.5120/2252-2436 fatcat:sctfvaqdhvbpdjuujfxb5j4bn4

Study of Error Performance of Rotated PSK modulation in Nakagami-q (Hoyt) Fading Channel

Kapil Gupta, P. K. Ghosh
2012 International Journal of Computer Applications  
We derive here the expressions for the Symbol Error Probability (SEP) of rotated BPSK and QPSK modulations over frequency non-selective slowly fading Nakagami-q channels.  ...  The paper concerns with the study of the modulation diversity in PSK scheme due to rotation of the signal constellation along with bit interleaving.  ...  Nakagami [13] introduced Nakagami-q model as an approximation for the Nakagami-m fading distribution in the range of fading that extends from the one sided Gaussian model to the Rayleigh model with the  ... 
doi:10.5120/5635-8018 fatcat:l2fe6hgrtjfizjfjakussoiw7y

On the performance of O3BPSK LDD with diversity combining techniques over fading channels

Chia-Hsin Cheng, Jen-Yung Lin, Jyh-Horng Wen, Chao-Kai Wen
2008 Computer Communications  
Zheng and Barton developed a convenient signaling scheme (orthogonal on-off BPSK (O 3 BPSK)) with a simple one-shot linear decorrelating detector (LDD) for near-far resistant detection in asynchronous  ...  Three types of channel model are considered, namely Rayleigh fading, Nakagami-m fading, and Ricean fading.  ...  In the Nakagami-m distribution, when m approaches m ¼ 1, Nakagami-m fading reduces to Rayleigh fading. However, as m approaches infinity, Nakagami-m fading becomes a non-fading case.  ... 
doi:10.1016/j.comcom.2007.12.002 fatcat:o3ml6mwtu5fwbms7akbznmculm

Microdiversity reception of spread-spectrum signals on Nakagami fading channels

A. Annamalai
1999 IEEE Transactions on Communications  
fading and for small diversity orders, conditioned on the situation that all the diversity branches have identical mean signal strengths.  ...  This is an important consideration because in practice equal mean signal strengths rarely occur, which results in loss of diversity gain.  ...  Beaulieu of Queen's University, Kingston, ON, for correspondence, and he is also very grateful to Prof. V. K. Bhargava for his encouragement and guidance.  ... 
doi:10.1109/26.803510 fatcat:nw5qsrya6vgthatwhh54w4gryu

Channel Quality Estimation Index (CQEI): A Long-Term Performance Metric for Fading Channels and an Application in EGC Receivers

Athanasios Lioumpas, George Karagiannidis, Athanassios Iossifides
2007 IEEE Transactions on Wireless Communications  
Numerical results show that the new proposed selection-EGC (S-EGC) receiver outperforms the classical one, when fading with nonidentically distributed diversity branches is assumed.  ...  Index Terms-Amount of fading (AoF), Channel Quality Estimation Index (CQEI), diversity, equal-gain combining (EGC), Nakagami-m fading, Nakagami-n fading, Nakagami-q fading, S-EGC receivers.  ...  Similar results can be deduced for the Nakagami-n and Nakagami-q fading channels as follows. B.  ... 
doi:10.1109/twc.2007.06054 fatcat:lppdvadtlvgpncrxcpwdgquh5q

Semianalytic BER Estimation of SC-QPSK under Nakagami-m Frequency Selective Fading Channel with Diversity Reception

Abhijit Bhattacharyya
2014 International Journal of Information and Electronics Engineering  
This technique is demonstrated to estimate BER of SC-QPSK system under Nakagami-m frequency selective fading channel.  ...  Our result shows that system performance degrades with increasing value of system parameter. Index Terms-Bit error rate, single carrier-QPSK, Nakgami-m fading channel, diversity.  ...  RESULTS AND DISCUSSION The BER vs. SNR for QPSK system for two tap frequency selective fading channel has been shown in Figure 2 for different values of m.  ... 
doi:10.7763/ijiee.2014.v4.410 fatcat:tqmnqnlmbzaotkiii66niba4bi

Multiple Transmit Antenna Selection in MIMO-OSTBC System in Nakagami-m Fading Channel

Vaibhav Hendre, M. Murugan, Akshay B. Chandgude
2015 Procedia Computer Science  
The Bit Error Rate (BER) analysis is performed for multiple antenna selection in MIMO-OSTBC system for arbitrary values of 'm' in Nakagami-m fading channel.  ...  The performance analysis of the system is carried out under Nakagami-m flat fading channel.  ...  The Nakagami fading model is used for detection of signals for MRC systems in 11 . In 12 , transmit selection diversity with MRC is proposed for Nakagami fading models.  ... 
doi:10.1016/j.procs.2015.06.064 fatcat:yfydlexfwrendehvbbeuujtvma

Efficient Symbol Error Rate Analysis of Cooperative Non-Regenerative Relay Systems over Generalized Fading Channels

Oluwatobi Olabiyi
2012 International Journal of Wireless & Mobile Networks  
The accuracy of our approximations has been validated with the closed-form formulas that are available for specific fading environments (e.g., Rayleigh and Nakagami-m channels) and via computer (Monte  ...  approximation for the desired ASER in a number of fading environments that heretofore had resisted a simple solution.  ...  ACKNOWLEDGEMENTS This work was supported in part by funding from the US Army Research Office (W911NF-04-2-0054), Clarkson Aerospace, and the National Science Foundation (0931679 and 1040207).  ... 
doi:10.5121/ijwmn.2012.4101 fatcat:yguftfvvvzerrprs5b6g44qgwe

Unified asymptotic analysis of linearly modulated signals in fading, non-Gaussian noise, and interference

Amir Nasri, Robert Schober, Yao Ma
2008 IEEE Transactions on Communications  
The derived asymptotic closed-form results are valid for a large class of fading and noise processes.  ...  Furthermore, we show that the diversity gain only depends on the fading statistic and the number of diversity branches, whereas the combining gain depends on the modulation format, the type of fading,  ...  If we further specialize Eq. (17) to BPSK and Rayleigh fading, we obtain P PSK 2 = 1/(4γ), which is a famous result for Gaussian noise [2] .  ... 
doi:10.1109/tcomm.2008.060267 fatcat:4fvkpvash5gypkaa2dy3unlm4a

Relay selection for DF-based cooperative vehicular systems

Ayse Ipek Akin, Haci Ilhan, Özgür Özdemir
2015 EURASIP Journal on Wireless Communications and Networking  
The performance analyses and the numerical results for cascaded Nakagami-m channels have shown that VN-LLR approach provides significant performance improvement with respect to the other considered techniques  ...  All of the links in the system are modeled as cascaded Nakagami-m distributed random variables which provide a realistic description of an intervehicular channel.  ...  In order to determine the effect of fading parameter on the performance of the system, we propose the numerical results for M = 3, N = 2, m = 3, and d SR = 0.9 in It is seen that when the relay is located  ... 
doi:10.1186/s13638-015-0251-3 fatcat:2q7lxw5dhjgzpn2vnye2yh62gy

MGF-based Analysis of Maximum Ratio Combining Receiver over Fisher-Snedecor Composite Fading Channel

Further, the numerical results of newly derived expression are presented and compared with the results of Rayleigh and Nakagami-m distribution which is the special case of Fisher Snedecor composite fading  ...  In this paper, the closed-form expression for moment generating function (MGF) of instantaneous signal to noise ratio (SNR) over independent identically distributed (i.i.d) Fisher-Snedecor composite fading  ...  We have compared the result of ABER for BPSK modulation scheme over Fisher fading channel (solid line) with ABER of Rayleigh (Asterisk) and Nakagami-m distribution (circle) over single branch receiver  ... 
doi:10.35940/ijitee.i1001.0789s19 fatcat:thow3aq7u5eopgcmwf4we6d3fy

Performance Analysis of $L$- Branch Scan-and-Wait Combining (SWC) Over Arbitrarily Correlated Nakagami- $m$ Fading Channels

George C. Alexandropoulos, P. Takis Mathiopoulos, Pingzhi Fan
2017 IEEE Transactions on Vehicular Technology  
It was found that the convergence speed depends on the correlation and operating SNR values as well as the Nakagami m-parameter.  ...  The performance of L-branch scan-and-wait combining (SWC) reception systems over arbitrarily correlated and not necessarily identically distributed Nakagami-m fading channels is analyzed and evaluated.  ...  for L = 3 , 3 Nakagami-m fading with m = 1 and 3, δ = 0 and 4-PAM, we have used the ASEP expression [30, eq. (21)] for each g 1 value to compute the optimum SNR threshold g * T1 minimizing SEC's ASEP,  ... 
doi:10.1109/tvt.2016.2582537 fatcat:e7fig6oqxjbanif6367nuwdbsa

Theoretical Diversity Improvement in$rm GSC(N,L)$Receiver With Nonidentical Fading Statistics

A. Annamalai, G.K. Deora, C. Tellambura
2005 IEEE Transactions on Communications  
The study on generalized selection combining (GSC( )) diversity systems that adaptively combines a subset of paths with the highest instantaneous signal-to-noise ratios (SNRs) out of available diversity  ...  multipaths are independent with nonidentical fading statistics.  ...  In [10] , the specific cases of and in conjunction with binary phase shift keying (BPSK) modulation scheme are treated for i.n.d. Nakagami-fading channels.  ... 
doi:10.1109/tcomm.2005.849742 fatcat:gdk2yhwydncrbpkxp3x3qbpvze

Performance Analysis of IDF Relaying M2M Cooperative Networks over N-Nakagami Fading Channels

2015 KSII Transactions on Internet and Information Systems  
Exact average bit error probability (BEP) expressions for mobile-relay-based mobile-to-mobile (M2M) cooperative networks with incremental decode-and-forward (IDF) relaying over N-Nakagami fading channels  ...  Results are presented which show that the fading coefficient, the number of cascaded components, the relative geometrical gain, and the power allocation parameter have a significant influence on the average  ...  The OPA values can be stored for use as a lookup table in practical implementation. In Table 1 , we present optimum values of K for N-Nakagami fading channels.  ... 
doi:10.3837/tiis.2015.10.012 fatcat:zfkkpoyl25hunfqihyqkpdbp5a

Performance comparison of cooperative relay links with different relay processing strategies: Nakagami/Gamma approximation approaches

Jia Shi, Chen Dong, Lie-Liang Yang
2014 EURASIP Journal on Wireless Communications and Networking  
, Rician fading and Nakagami-m fading channels [8] [9] [10] [11] [12] [13] [14] [15] .  ...  from relays to destination experience various types of fading modeled by the Nakagami-m distributions.  ...  Acknowledgements This work was presented in part at the IEEE VTC2012 Spring, 6-9 May 2012, Yokohama, Japan.  ... 
doi:10.1186/1687-1499-2014-53 fatcat:kxxatfigbrdq7o4de3oxzwdym4
« Previous Showing results 1 — 15 out of 205 results