Data Error Rate Definition
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be challenged and removed. (March 2013) (Learn how and when to remove this template message) In digital transmission, the number of bit errors is the number of received bits of a data stream over a communication channel that have been altered due to noise, interference, distortion or bit error rate definition bit synchronization errors. The bit error rate (BER) is the number of bit errors per
Symbol Error Rate Definition
unit time. The bit error ratio (also BER) is the number of bit errors divided by the total number of transferred bits during a
Packet Error Rate Definition
studied time interval. BER is a unitless performance measure, often expressed as a percentage.[1] The bit error probability pe is the expectation value of the bit error ratio. The bit error ratio can be considered as an approximate estimate
Frame Error Rate Definition
of the bit error probability. This estimate is accurate for a long time interval and a high number of bit errors. Contents 1 Example 2 Packet error ratio 3 Factors affecting the BER 4 Analysis of the BER 5 Mathematical draft 6 Bit error rate test 6.1 Common types of BERT stress patterns 7 Bit error rate tester 8 See also 9 References 10 External links Example[edit] As an example, assume this transmitted bit sequence: 0 1 1 0 equal error rate definition 0 0 1 0 1 1 and the following received bit sequence: 0 0 1 0 1 0 1 0 0 1, The number of bit errors (the underlined bits) is, in this case, 3. The BER is 3 incorrect bits divided by 10 transferred bits, resulting in a BER of 0.3 or 30%. Packet error ratio[edit] The packet error ratio (PER) is the number of incorrectly received data packets divided by the total number of received packets. A packet is declared incorrect if at least one bit is erroneous. The expectation value of the PER is denoted packet error probability pp, which for a data packet length of N bits can be expressed as p p = 1 − ( 1 − p e ) N {\displaystyle p_{p}=1-(1-p_{e})^{N}} , assuming that the bit errors are independent of each other. For small bit error probabilities, this is approximately p p ≈ p e N . {\displaystyle p_{p}\approx p_{e}N.} Similar measurements can be carried out for the transmission of frames, blocks, or symbols. Factors affecting the BER[edit] In a communication system, the receiver side BER may be affected by transmission channel noise, interference, distortion, bit synchronization problems, attenuation, wireless multipath fading, etc. The BER may be improved by choosing a strong signal strength (unless this causes cross-talk and more bit errors), by choosing a slow and robust modulation scheme or line coding scheme, and by applyi
Networking Telecom bit error rate (BER) Definition bit error rate (BER) Facebook Like Tweet Google +1 LinkedIn Email Comment RSS Print A AA AAA family wise error rate definition Part of the Telecom glossary: In telecommunication transmission, the bit error rate (BER) is the define error rate percentage of bits that have errors relative to the total number of bits received in a transmission, usually expressed as ten to bit error rate calculation a negative power. For example, a transmission might have a BER of 10 to the minus 6, meaning that, out of 1,000,000 bits transmitted, one bit was in error. The BER is an indication of how https://en.wikipedia.org/wiki/Bit_error_rate often a packet or other data unit has to be retransmitted because of an error. Too high a BER may indicate that a slower data rate would actually improve overall transmission time for a given amount of transmitted data since the BER might be reduced, lowering the number of packets that had to be resent. A BERT (bit error rate test or tester) is a procedure or device that measures the BER for http://whatis.techtarget.com/definition/bit-error-rate-BER a given transmission. This was last updated in September 2005 Contributor(s): Yaochou Yang Posted by: Margaret Rouse Related Terms Definitions Telecommunications - Telecommunications is the transmission of data, voice and video over significant distances by electronic means that use a wide variety of networks and media. (SearchTelecom.com) VoIP (voice over IP) - VoIP enables voice and multimedia communications, such as phone calls, over the internet and other IP-based networks, and allows enterprises to operate a single voice and data network. (SearchUnifiedCommunications.com) frequency-hopping spread spectrum - Frequency hopping is one of two basic modulation techniques used in spread spectrum signal transmission. (SearchNetworking.com) Glossaries Telecom - Terms related to telecom, including definitions about telecommunication service providers and words and phrases about voice, video and Internet communication. Internet applications - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ... Dig Deeper People Who Read This Also Read... Bandwidth 101 Bandwidth 101 Understanding WLAN signal strength Comparing 2-D and 3-D NAND performance and longevity Reliability, availability and survivability Ask a Question. Find an Answer.Powered by ITKnowledgeExchange.com Ask An IT Question Get answers from your peers on your most technical challenges Ask Question performance tunning Performance degraded after changing optimizer mode Hi, When o
XSD DDL SDE - software defined environment software-defined servers MIDL Software-Defined Everything - SDE SDS - software-defined storage HDMI http://www.webopedia.com/TERM/B/BER.html - High-Definition Multimedia Interface high definition photo CDF - channel definition format BER is short for bit error rate. In a digital transmission, BER is the percentage of http://www.thefreedictionary.com/data+error bits with errors divided by the total number of bits that have been transmitted, received or processed over a given time period. The rate is typically expressed as error rate 10 to the negative power. For example, four erroneous bits out of 100,000 bits transmitted would be expressed as 4 x 10-5, or the expression 3 x 10-6 would indicate that three bits were in error out of 1,000,000 transmitted. BER is the digital equivalent to signal-to-noise ratio in an analog system. See also BERT. PREVIOUSBeowulfNEXTBerkeley error rate definition Internet Name Domain TECH RESOURCES FROM OUR PARTNERS WEBOPEDIA WEEKLY Stay up to date on the latest developments in Internet terminology with a free weekly newsletter from Webopedia. Join to subscribe now. LATEST ARTICLES 8 Agenda Apps to Help Students Stay Organized Webopedia's student apps roundup will help you to better organize your class schedule and stay on top of assignments and homework. Read More » List of Free Shorten URL Services A URL shortener is a way to make a long Web address shorter. Try this list of free services. Read More » Top 10 Tech Terms of 2015 The most popular Webopedia definitions of 2015. Read More » STUDY GUIDES Java Basics, Part 1 Java is a high-level programming language. This guide describes the basics of Java, providing an overview of syntax, variables, data types and... Read More » Java Basics, Part 2 This second Study Guide describes the basics of Java, providing an overview of operators, modifiers and control Structures. Read More »
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