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Techniques for Improving Block Error Rate of LDPC Decoders
2006 IEEE International Symposium on Circuits and Systems, 2006In the study of low-density-parity-check (LDPC) codes, most researchers are interested in their bit error rate performance. However, block error rate (BLER) is another important measure of the system performance because it provides the rate at which the blocks/packets need to be re-sent again - the smaller the better.
Xia Zheng +3 more
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Influence of Pointing Errors at the Block Error Rate Performance of Strong Turbulent SIMO FSO Links
2021 16th International Conference on Telecommunications (ConTEL), 2021The last few years Free Space Optical (FSO) communication has attracted significant research and commercial interest because of the many advantages in comparison with other wireless methods used for point-to- point connections. The operation of these systems strongly depends on the atmospheric and others effects in the area between the transmitter and ...
Nikolaos A. Androutsos +4 more
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Computing the Word-, Symbol-, and Bit-Error Rates for Block Error-Correcting Codes
IEEE Transactions on Communications, 2004In order to select error-correcting codes for various applications, their performances have to be determined. However, when targeting error-rate computations for block error-correcting codes, many required results are missing in the coding literature. Even in the simple case of binary codes and bounded-distance decoding, classical texts do not provide ...
Claude Desset +2 more
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Investigation on Rate-Compatible Polar Codes Achieving Required Block Error Rates
2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS), 2018In mobile-communication systems such as 5G and beyond, extremely high performance levels are required for a single radio access network to support very different types of traffic. The requisite channel codes in mobile-communication systems require higher throughput, extremely low latency, and low power consumption and have different inherent error ...
Taku Sugimoto +3 more
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Semianalytical simulation for evaluation of block-error rates on fading channels
IEEE Transactions on Communications, 1998A semianalytical (SA) simulation method is proposed as a means to improve the efficiency of computer simulation in estimating block-error rates (BKERs) in the presence of Doppler fading and additive white Gaussian noise. Frequency-nonselective Rayleigh, Rician, and Nakagami fading with diversity combining for binary noncoherent frequency-shift keying ...
Alemayehu Seyoum, Norman C. Beaulieu
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New block error rate model for Rayleigh fading channels
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754), 2005A novel method to estimate block error rates (BLER) in the Rayleigh frequency-nonselective fading channel is proposed. The suggested model is based on a finite state Markov chain. The general analytical results are specialized to the case of differential phase shift keying (DPSK) with coherent detection and to the case of Jakes' fading spectrum.
Vanja Subotic, Serguei Primak
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Edit distances with block movements and error rate confidence estimates
Machine Translation, 2009We present two evaluation measures for Machine Translation (MT), which are defined as error rates extended by block moves. In contrast to Ter, these measures are constrained in a way that allows for an exact calculation in polynomial time. We then investigate three methods to estimate the standard error of error rates, and compare them to bootstrap ...
Gregor Leusch, Hermann Ney
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Effect of keyholes on the symbol error rate of space-time block codes
IEEE Communications Letters, 2003In multiple-input multiple-output (MIMO) fading environments, degenerate channel phenomena, so-called keyholes or pinholes, may exist under realistic assumptions where a MIMO channel has uncorrelated spatial fading between antenna arrays but a rank-deficient transfer matrix.
Hyundong Shin, Jae Hong Lee
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An Efficient Algorithmic Lower Bound for the Error Rate of Linear Block Codes
IEEE Transactions on Communications, 2007We present an efficient algorithmic lower bound for the block error rate of linear binary block codes under soft maximum-likelihood decoding over binary phase-shift keying modulated additive white Gaussian noise channels. We cast the problem of finding a lower bound on the probability of a union as an optimization problem that seeks to find the subset ...
Firouz Behnamfar +2 more
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Evaluation of the Extremely Low Block Error Rate of Irregular LDPC Codes
2009 IEEE International Conference on Communications, 2009In this paper, we attempt to evaluate irregular LDPC code performance at the high SNR region using the importance sampling (IS) approach in conjunction with primary-trapping-set identification. Results have indicated that our proposed IS scheme can produce speed-up gains up to 3.9 × 109 times compared with Monte Carlo simulations.
Xia Zheng +4 more
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