BER Estimation for Linear Clock and Data Recovery Circuit
0
Citation
16
Reference
10
Related Paper
Keywords:
SIGNAL (programming language)
In digital communication systems, the periodicity of timing signals is often disturbed. While timing jitter has been adopted by the International Telecommunication Union (ITU) as the standardized measurement for such disturbances, phase jitter is often used instead in much of the current relevant literature. The fundamental concepts of timing jitter and phase jitter are examined and definitions are presented. A nonlinear relationship between timing jitter and phase jitter is developed, and a general rendition under which one can be approximated by the other is obtained. This condition is tested against the timing jitter and wander tolerance for digital equipment operating at 2048 kb/s, as specified in ITU-T Recommendation G.823.
Cite
Citations (8)
In the digital communication system, the system bit error rate (BER) and the bandwidth efficiency are the two most important indicators of system performance evaluation to a digital communications system. Traditional evaluation methods for digital communication systems in general condsiders either communication error rate or bandwidth efficiency in a performance analysis, then it chooses the best system of which they select,this method always overlooks another important indicator of system performance evaluation.This article will refer to a new overall evaluation which can beconsider the system bit error rate and bandwidth efficiency to the digital communication system. Considering both the system bit error rate (BER) and the bandwidth efficiency for OFDM,DWT-OFDM and a new modulationdigital communication system, a better choice of overall performance communication system can be selected.
Spectral Efficiency
Word error rate
Cite
Citations (0)
The paper describes the mechanism of Agilent 3458A sampling time jitter present when external triggering is used at synchronous two channel sampling. Based on measurements it is shown that the master DMM adds approximately 3.2 ns of its own time jitter while triggering the slave DMM and that the effective time jitter for externally triggered DMM remains at 7 ns, well below ±50 ns maximum jitter as specified by manufacturer.
Sampling time
Cite
Citations (3)
This paper presents a hardware jitter expansion technique to enable high-resolution jitter measurement of multi-GHz digital signals. To realize high-resolution timing analysis, the jitter is reconstructed on a low-speed signal and jitter measurements are made on this signal instead of the original high-speed signal. The reconstructed jitter on the low-speed signal occurs on a proportionately larger time-scale as opposed to the original jitter on the high-speed signal. Consequently, the jitter on the low-speed signal can be measured easily using conventional jitter measurement techniques and mapped back to its corresponding value relative to the high-speed signal. The approach allows one or two orders of magnitude smaller jitter values to be measured than standard jitter measurement techniques available today. The proposed hardware is easily implemented as a front-end to any existing jitter measurement system. Simulation data and hardware measurements are presented to prove the viability of the proposed scheme.
SIGNAL (programming language)
Cite
Citations (8)
Jitter Measurement is an important part of High Speed test. With customer's test requirement rapidly growing, result only include RJ and DJ is not acceptable. The solution of test specific kinds of jitter (such as DDJ, DCD, ISI...) to verify the IC transform performance is strongly demanded by customers. So far, the industry of existing jitter measurement method include strobe method and Time-stamp method on TMU. However, the limitations are either complex or just measure several types of jitter. An industry leading solution of high accuracy jitter measurement by TMU directly sampling with new PRBS pattern reconstruction method is proposed in this paper. All types of jitter can be skillfully tested with the condition of no cost increase.
Pseudorandom binary sequence
Cite
Citations (1)
High performance serial communication systems often require the bit error rate (BER) to be at the level of 10/sup -12/ or below. The excessive test time for measuring such a low BER is a major hindrance in testing communication systems cost-effectively. We propose a new technique for accurate and efficient estimation of the BER. The proposed technique estimates the BER based on the spectral information of jitter and the characteristics of the clock and data recovery circuit. The method can significantly reduce the production test time for BER testing. Simulation results demonstrate the potential usefulness of the method.
Data recovery
Clock Recovery
Spectral Efficiency
Cite
Citations (19)
Different jitters terms are widely used for jitter characterization, -edge jitter, cycle-to-cycle jitter, period jitter are just a few of them. These jitter conventions have been studied in many publications considering jitter measurements, but they lack a common mathematical basis which should include both - the relations of these terms with jitter spectrum typical for measurement practice, and some jitter conversions which time domain measurement instruments (TDI) depend on for instrument performance and synchronization. We generalize the common theoretical basis, which establishes the dependencies between different jitter terms and jitter spectrum. We demonstrate and explain some effects of typical jitter term measurements observed in measurement practice. The obtained results are important for correct jitter measurements and specifications in clock, SOC, communication, ATE, high-speed digital test, etc
Cite
Citations (24)
Timing jitter, period jitter, long term jitter, jitter spectrum, SSB phase noise, etc. are terms that have been used to describe various aspects of jitter phenomena. While several jitter measurement techniques have been proposed with associated jitter models and modeling techniques, the relationship among various jitter aspects, and therefore, the relationship among various jitter measurement techniques is not very obvious. This paper analytically clarifies their relationship, and reviews several jitter measurement techniques based on the results of our analytical studies.
Cite
Citations (75)
Space optical communication technique is attracting increasingly more attention because it owns advantages such as high security and great communication quality compared with microwave communication. As the space optical communication develops, people have already achieved the communication at data rate of Gb/s currently. The next generation for space optical system have goal of the higher data rate of 40Gb/s. However, the traditional optical communication system cannot satisfy it when the data rate of system is at such high extent. This paper will introduce ground optical communication system of 40Gb/s data rate as to achieve the space optical communication at high data rate. Speaking of the data rate of 40Gb/s, we must apply waveguide modulator to modulate the optical signal and magnify this signal by laser amplifier. Moreover, the more sensitive avalanche photodiode (APD) will be as the detector to increase the communication quality. Based on communication system above, we analyze character of communication quality in downlink of space optical communication system when data rate is at the level of 40Gb/s. The bit error rate (BER) performance, an important factor to justify communication quality, versus some parameter ratios is discussed. From results, there exists optimum ratio of gain factor and divergence angle, which shows the best BER performance. We can also increase ratio of receiving diameter and divergence angle for better communication quality. These results can be helpful to comprehend the character of optical communication system at high data rate and contribute to the system design.
Free-Space Optical Communication
Word error rate
Cite
Citations (0)
Non-repeatable positioning of transitions in the media (jitter) is one of the primary limiting factors in achieving higher linear density in magnetic recording. In a typical magnetic recording system, the primary sources of jitter are due to the finite grain size and the switching field distribution of the grains in the media. These contributions to jitter are generally referred to as the "written-in" contributions [1] . However, if the system that delivers the write field to the media itself has jitter, as all real-world systems will, then this "timing jitter" will also contribute to the total written-in jitter.
Recording media
Limiting
Patterned media
Cite
Citations (0)