A Physical Unclonable Function With Bit Error Rate < 2.3 $\times$ 10−8 Based on Contact Formation Probability Without Error Correction Code

2020 ◽  
Vol 55 (3) ◽  
pp. 805-816 ◽  
Author(s):  
Duhyun Jeon ◽  
Jong Hak Baek ◽  
Yong-Duck Kim ◽  
Jaeseong Lee ◽  
Dong Kyue Kim ◽  
...  
Keyword(s):  
Error Correction ◽  
Bit Error Rate ◽  
Error Rate ◽  
Physical Unclonable Function ◽  
Error Correction Code ◽  
Contact Formation ◽  
Formation Probability

scholarly journals Effect of atmospheric impairments on ku-band free-to-air digital satellite television signals in Lagos State

2020 ◽  
Vol 39 (1) ◽  
pp. 238-245
Author(s):  
A.O. Gbenga-Ilori
Keyword(s):  
Error Correction ◽  
Bit Error Rate ◽  
Error Rate ◽  
Modulation Scheme ◽  
Error Correction Code ◽  
Propagation Models ◽  
Satellite Television ◽  
Satellite Link ◽  
Lagos State ◽  
Ku Band

With the rapid deployment of free-to-air satellite television, there is an increasing need for an accurate propagation prediction tool for satellite link planning. This paper presents an evaluation of deterministic propagation model that is best for the analysis of satellite signal quality at Ku-band in Lagos state, Nigeria. The paper aims at comparing accurate measurements of channel-to-noise (C/N0) and bit error rate (BER) taken at six locations within Lagos state with simulation results derived from the Institut für Rundfunktechnik (IRT) model and modified irregular terrain model (ITM) deterministic propagation models. The work considered the effect of the type of modulation scheme and error correction code used on the C/N0 and BER received using these deterministic propagation models. Results show a deviation of 0.732 dB and 0.285 dB from C/No measurements using the IRT and modified ITM models respectively. This work shows that at more than 1% of the time, both models performed well when compared with measurements. However, at less than 1% of the time, which accounts for periods of heavy rainfall, the modified ITM model performed better. The paper also shows that when error correction code is not used with the modulation scheme deployed, the BER increases rapidly and the effect of using a higher alternate modulation symbol is not evident on achievable data rates. Keywords: Bit error rate, deterministic propagation models, Ku-band, satellite link planning

scholarly journals Performance Improvement of Ber Based on Multipath Forward Error Correction Diversity in Wireless Communication Channels

2020 ◽  
Vol 23 (1) ◽  
pp. 159-171
Author(s):  
Ahmad Baheej
Keyword(s):  
Wireless Communication ◽  
Error Correction ◽  
Bit Error Rate ◽  
Error Rate ◽  
Communication Systems ◽  
Forward Error Correction ◽  
Multiple Input Multiple Output ◽  
Wireless Communication Systems ◽  
Forward Error ◽  
Diversity Technique

The multipath phenomenon is a major factor that is continually affected negatively the performance of wireless communication systems. Since the receiver gets different copies of the transmitted signal from various paths at different times. Consequently, destructive or constructive interference can occur. Therefore, the performance of wireless communication systems is poor in term of bit error rate. This phenomenon can be taken as an advantage if the multiple – input – multiple – output antenna systems are employed at both transmitter and receiver sides (antenna diversity) to improve the bit error rate performance. This paper focuses on the combination of multipath forward error correction diversity technique with vertical-Bell laboratories layered space-time coding. This will lead to enhance the bit error rate in wireless communication systems. The proposed system used Rayleigh and additive white Gaussian noise as two different channel models. The multipath forward error correction diversity technique treats the multipath propagated signals as unessential copies, to utilise them to enhance the bit error rate limitation in the multiple – input – multiple – output systems. The simulation results showed that the performance of the proposed system can be gradually improved by increasing the number of utilised multipath signals in the multipath forward error correction diversity technique

scholarly journals Area-Efficient Early-Termination Technique for Belief-Propagation Polar Decoders

Electronics ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 1001
Author(s):  
Choi ◽  
Yoo
Keyword(s):  
Error Correction ◽  
Bit Error Rate ◽  
Error Rate ◽  
Belief Propagation ◽  
Early Termination ◽  
Experimental Results ◽  
Polar Codes ◽  
Termination Criterion ◽  
Area Efficient

Early-termination techniques for a belief-propagation (BP) decoder of polar codes can improve the decoding throughput by finishing a decoding iteration when an early-termination condition is satisfied. In the BP decoders, the early-termination condition plays an important role, as it affects decoding iteration savings. In this letter, an area-efficient early-termination criterion is proposed, which simplifies the previous threshold-based termination condition by completely eliminating redundant computations. According to the experimental results, the proposed structure for (1024, 512) polar codes can reduce 72.7%, 66.5%, and 59.7% of hardware resources without any degradation in the error-correction performance and decoding throughput compared to the previous threshold-based, information-BER (bit error rate)-based, and frozen-BER-based early-termination techniques, respectively.

Construction and Analysis on a New Concatenation Code for Optical Communications

2014 ◽  
Vol 543-547 ◽  
pp. 2266-2269
Author(s):  
Jian Guo Yuan ◽  
Yang Tian ◽  
Jie Zhang ◽  
Liang Bo Shu
Keyword(s):  
Theoretical Analysis ◽  
Error Correction ◽  
Bit Error Rate ◽  
Error Rate ◽  
Optical Communications ◽  
Coding Gain ◽  
The Third ◽  
Simulation Results

Based on the theoretical analysis of both the characteristics for the concatenation code and the two concatenation code-types in ITU-T G.975.1, a new RS(255,223) + BCH(2040,1930) concatenation code for optical communications is constructed and analyzed. The simulation results show that this new concatenation code, compared with the RS(255,239)+CSOC(k0/n0=6/7,J=8) code in ITU-T G.975.1, had a lower redundancy and the better error-correction performance. Furthermore, at the third iteration and at the bit error rate (BER) of 10-12, its net coding gain (NCG) was respectively 0.46 dB and 0.43 dB more than that of RS(255,239)+CSOC(k0/n0=6/7,J=8) code and BCH(3860,3824)+BCH(2040,1930) code in ITU-T G.975.1. Therefore, the constructed RS(255,223)+BCH(2040,1930) concatenation code can be better suitable for optical communications.

scholarly journals Bandwidth density optimization of misaligned optical interconnects

2022 ◽  
Vol 12 (2) ◽  
pp. 1626
Author(s):  
Hasan Aldiabat ◽  
Nedal Al-ababneh
Keyword(s):  
Error Correction ◽  
Bit Error Rate ◽  
Error Rate ◽  
Optical Interconnects ◽  
Fill Factor ◽  
Code Rate ◽  
Error Correction Codes ◽  
Free Space Optical ◽  
Codeword Length ◽  
Higher Order Modes

In this paper, the bandwidth density of misaligned free space optical interconnects (FSOIs) system with and without coding under a fixed bit error rate is considered. In particular, we study the effect of using error correction codes of various codeword lengths on the bandwidth density and misalignment tolerance of the FSOIs system in the presence of higher order modes. Moreover, the paper demonstrates the use of the fill factor of the detector array as a design parameter to optimize the bandwidth density of the communication. The numerical results demonstrate that the bandwidth density improves significantly with coding and the improvement is highly dependent on the used codeword length and code rate. In addition, the results clearly show the optimum fill factor values that achieve the maximum bandwidth density and misalignment tolerance of the system.

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