cyclic error 中文意思是什麼
cyclic error
解釋
循環誤差-
Cycle frequency - based blind beamforming shows the performance degradation due to cfe ( cyclic frequency error ). an improved algorithm is presented in literature 6, which adopting forgetting factor in estimation cyclic correlation matrix would largely depress the sensitivity of cab to cyclic frequency error. by using this method, the improved algorithms of the c - cab and ecab algorithms are presented in this dissertation
針對基於循環頻率的盲波束形成演算法對循環頻率誤差cfe （ cyclicfrequencyerror ）很敏感而導致演算法性能下降的情況，參照文獻[ 6 ]提出的遺忘因子cab演算法，提出了c - cab演算法以及基於特徵空間的盲波束形成演算法（ ecab ）的改進演算法。 -
In this paper, we study two kinds of error - correcting codes. one kind is cyclic code over finite chain rings, and the other is sdq ( b ) code over finite fields
本文研究了有限鏈環上的循環碼和有限域上的sd _ q （ b ）碼這兩類糾錯碼。 -
3. error correcting cyclic redundancy checks based on confidence declaration is studied in detail
3 .詳細研究了基於比特置信度判定的循環冗餘校驗糾錯技術。 -
A cyclic check code used to check and correct the burst error appeared in the transmission procedure of binary information sequence. it is one of the error check codes in common use for computer disc memory
用來檢查、糾正二進制信息序列在傳輸過程中出現的突發錯誤的一種循環校驗碼，它是計算機磁盤存儲器常用的錯誤校驗碼之一。 -
Based on the group theoretic framework, equivalent forms of quantum error correcting codes are found for encoding three qubits in eight qubits and correcting one error. a class of quantum cyclic codes of encoding one qubit and correcting two or three random quantum errors is obtained via quadratic residue
第四章研究了量子糾錯碼，基於群論框架求出了量子8編3碼的等價碼，用二次剩餘方法求出了一類糾兩位和三位錯的量子碼。 -
Secondly, the dissertation proposes a novel blind symbol - timing scheme for ofdm systems based on cyclostationarity feature of received symbols. the proposed schemes also exploits the periodicity of ofdm symbol introduced by cyclic prefix, by applying 2 - dimentional fourier transformation and choosing the appropriate correlation peak value as the symbol start location, the precision of this scheme is higher than previous conventional method. thirdly, the dissertation presents analysis with regard to channel estimation of ofdm systems. several interpolation algorithm in ofdm systems which based on pilot sequence have been analyzed in the first instance, and the influence of the channel noise on interpolation precision has discussed. the theoretic analysis and simulation results show that : the interpolation error induced by the precision of interpolation procedure itself has out weight
第三，論文在ofdm系統的通道估計方面，先對基於導頻的ofdm通道估計中的多種插值方法進行了分析，討論了噪聲對插值精度的影響，指出插值本身的精度所造成的插值誤差遠大於噪聲所帶來的插值誤差，從而階次更高的插值演算法在實用中並非最優的;並指出插值濾波法比變采樣率演算法對噪聲的影響更為敏感，在信噪比較高時插值濾波演算法比變采樣率演算法更優。 -
The cyclic estimation approaches of chirp signals in additive nose or multiplicative noise are proposed, it presents a way for the parameters estimation of zero mean amplitude chirp signals. the estimation performances in the additive noise or multiplicative noise are analyzed by the first order perturbation analysis method, and the error variance expressions of the parameters estimation under large samples are derived
針對加性噪聲情況及存在乘性噪聲的情況，提出了線性調頻信號參數的循環平穩估計方法，解決了零均值乘性噪聲的信號參數估計問題，並採用一階擾動分析方法，對兩種噪聲情況下的估計性能進行了分析，推導出了各參數的估計誤差方差公式。 -
Especially forgetting factor ecab has excellent performance under large cyclic frequency error
特別是遺忘因子ecab演算法，在循環頻率誤差較大的情況下，仍能保持很好的性能。 -
Thus hot air cyclic heating mode was established in the project design of a factory, using natural gas as the energy source and based on a series of trial and error
在某廠的工程設計中，經過多次的方案比較，最終採用天然氣作能源，採用熱風循環加熱方式。 -
Firstly, the discrete multi - tone processing in an adsl central office - side interface card is detailedly introduced. the processing mainly includes timing, framing, interleaving, forward error correction, cyclic redundancy check, constellation encoding, inverse fast fourier transform processing, prefixing, d / a converting, and amplifying. secondly, a kind of interface named utopia level 2 is used as the network interface, with which many adsl devices are linked with one atm layer
本文比較詳細地闡述了數字用戶線接入模塊（ dslam ）開發方案中， adsl局端介面模塊的dmt編碼與調制過程，討論了其組網應用方式以及基於atm的網路側介面utopia2技術，分析了adsl與其它寬帶接入技術的相互聯系和優缺點，並介紹了方案中所採用的一些關鍵技術，包括在線插拔技術、系統同步啟動和故障自動重起技術以及高速數字信號完整性的保證技術等等。 -
Qr code is a kind of 2d matrix barcode. it has high density, great capacity that will influent coding of 2d - barcode. a rs code is cyclic symbol error - correcting code, which can correct lost or missing data for damaged symbols
Qrcode是一種矩陣二維碼，具有信息密度大、容量高的優點，因此，譯碼時受噪聲的干擾大，採用糾錯能力比較強的非二進制bch碼中的一類? rs碼進行編碼，可以有效地抗除干擾進行糾錯。 -
The historical development of bom technique is reviewed from theory and practice, and the analysis, design and optimization strategy of relational database based bom are presented. in the flowing section, the paper analyzes traditional bom search algorithms and proposes some optimization algorithms, and then, through applying dag to bom technique, the bom cyclic nesting error check algorithms and low - lever code algorithms are improved as well
本文重點研究了bom技術的研究現狀，提出了基於關系型數據庫的bom的分析、設計和優化策略；並且對bom的常用遍歷演算法進行分析后對其進行改進；將dag圖運用到bom技術上對bom的循環嵌套錯誤檢查的演算法和低層碼的演算法進行改進。 -
In the gsm system, error - control is the key - technology of the wireless - interface. combining the error - control technology with the software and hardware, in the baseband transmit part of the gsm mobile station test set, i ' ll provide a module which can accomplish the physical layer ' s protocol of the wireless - interface., and the fec technologies, such as cyclic code, convolutional code and viterbi decode, can be achieved by the baseband module, too
差錯控制技術是gsm移動通信系統無線介面協議的核心內容，本課題的任務是將差錯控制技術的原理與相關的軟、硬體結合起來，在gsm移動電話綜合測試儀的數字基帶模塊中實現gsm無線介面的物理層協議，完成差錯控制技術中的循環碼、卷積碼、交織、 viterbi譯碼等前向糾錯技術。
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