Results 141 to 150 of about 4,042 (160)
Some of the next articles are maybe not open access.
OFDM error floor based EVM estimation
2016 24th International Conference on Software, Telecommunications and Computer Networks (SoftCOM), 2016The residual BER - error floor, though useful and widely used metrics for the end-to-end digital radio transmission performance, provides no insight into the error-generating analog impairments (e.g. modulation signal inaccuracy, power amplifier compression, carrier recovery phase error, or I-Q cross- talk), which, however, are easy to identify (so can
Adriana Lipovac +2 more
openaire +3 more sources
EVM based AMC for an OFDM system
2010 Wireless Telecommunications Symposium (WTS), 2010A conventional OFDM system often poses a stringent linearity requirement to the transmitter, especially the radio-frequency power amplifier (RFPA), to maintain its bit error rate (BER). As a result, the output power from a RFPA is often limited, thus, the communication distance is compromised.
openaire +2 more sources
bhrashtachar evm vartamaan rajneeti
ANVESHA-A Multidisciplinary E-Journal for all Researches, 2022Hkz"Vkpkj orZeku ;qx esa ,d cM+k tfVy dSalj dk :i èkkj.k djrk tk jgk gS vkSj bl dSalj :ih jksx ls Hkkjr gh ugha oju lEiw.kZ foÜo =Lr gSA tSls&tSls euq"; çxfr djrk tk jgk gS] oSls&oSls euq"; ds le{k fodjky leL;k;sa mRiUu gksrh tk jgh gSA ,slh gh fodV leL;kvksa esa ls ,d leL;k gS jktuhfr esa Hkz"Vkpkj dh Hkz"Vkpkj dh leL;k ,M~l tSlh ykbykt chekjh
openaire +1 more source
EVM Simulation and Analysis Techniques
MILCOM 2006, 2006EVM (Error Vector Magnitude) is used as the metric for transmitter signal quality compliance in many modern communication systems. Examples include IS-54/IS-136, GSM/EDGE, 3GPP-WCDMA, and 802.11a/b/g wireless LAN commercial standards. MUOS (Mobile User Objective System) [1][3] is an example of a next generation military communications system leveraging
A. Wang +3 more
openaire +1 more source
Impact of EVM on Network Performance
2018 International Conference on Sensor Networks and Signal Processing (SNSP), 2018The error vector magnitude (EVM) is a key metric of the quality of digital modulation in modern wireless communication systems, Based on the requirement of LTE transmitter test standard for EVM, this paper first analyzes the network performance of the single-antenna two-antenna antenna under two conditions of EVM5% and EVM8% deterioration under the ...
Zhaohua Zeng, Mi Shao
openaire +1 more source
An anti-sandwich mechanism for EVM’s smart contracts
Future Generation Computer SystemsWith the advent of blockchain, Decentralised Finance (DeFi) has become an accessible and decentralised method for financial services. One of the most important components of DeFi is the Decentralised Exchanges (DEXs), smart contracts that let users exchange tokens with each other.
Barbara Guidi +2 more
openaire +1 more source
C-EVM: implementación en C de instrucciones ensamblador EVM
2020Hoy en día la transmisión de información a través de Internet es una realidad, así como el uso de tecnologías como Blockchain [1] que permiten realizar estas transacciones de forma segura mediante una red distribuida formada por diferentes entidades, o Bitcoin [2] que permite hacer intercambios monetarios a través de esa red.
openaire +1 more source
Isabelle/EVM: A Novel Formalization of the EVM in Isabelle/HOL
Smart contracts deployed on the Ethereum blockchain execute on the Ethereum Virtual Machine (EVM) and handle financial operations such as payments, asset transfers, and auctions. Given the high value they control, correctness in these contracts is critical, as errors and vulnerabilities have led to losses totalling hundreds of millions of dollars.Card, Ashley, Marmsoler, Diego
openaire +1 more source
Integrate Risk Management with EVM
2011This chapter contains sections titled: Introduction Guideline 3.1 Guideline 3.2 Summary ...
openaire +1 more source