frequency error造句
例句與造句
- The reason of high to middle frequency error is analysis
分析了中高頻誤差的成因。 - Maximum likelihood frequency error estimation based on cordic
算法的最大似然頻差估計(jì) - Inherent frequency error
固有頻差 - Especially forgetting factor ecab has excellent performance under large cyclic frequency error
特別是遺忘因子ecab算法，在循環(huán)頻率誤差較大的情況下，仍能保持很好的性能。 - Exploiting the cyclostationarity of ofdm signals in multipath environment , we further introduce an ofdm coarse frequency error estimator and an ofdm fine synchronizer
利用接收信號的循環(huán)平穩(wěn)性，結(jié)合信道響應(yīng)提出了一種ofdm頻偏粗估計(jì)器和一種ofdm定時(shí)偏差和頻偏精估計(jì)器。 - It's difficult to find frequency error in a sentence. 用frequency error造句挺難的
- The coarse frequency error estimator has a wide estimation range and may be used for initial caption . and the fine estimator can achieve nice performance in multipath environment
該粗估計(jì)器有很大的估計(jì)范圍，可用于頻偏的捕獲；而精估計(jì)器在多徑環(huán)境下能得到很好的估計(jì)效果。 - Simulation experiments show that the pitch extracting results of the algorithm are superior to that of the conventional algorithms , overcoming the random errors and multiple or half frequency errors , especially robust at low snr
仿真實(shí)驗(yàn)表明，該算法與傳統(tǒng)方法相比其基音檢測結(jié)果有明顯的改善，克服了隨機(jī)錯(cuò)誤及倍頻、半頻錯(cuò)誤，并且在低信噪比下魯棒性較好。 - It not only considers the effect of frequency error and data modulation , but also realizes code synchronization and frame synchronization at the same time . all these research work will give a valuable reference to the design of the new communication systems
本文對擴(kuò)頻通信系統(tǒng)構(gòu)成和原理,擴(kuò)頻序列設(shè)計(jì)與優(yōu)選,擴(kuò)頻序列同步問題進(jìn)行了研究,并進(jìn)行了相應(yīng)的仿真。 - A normal co - axis he - ne laser tube with bore length l = 190 mm was used . with pid and self - organised fuzzy control , the frequency error could be confined to a 10 ~ 9 level . in addition , preheating time and anti - interference were within requirements
選用腔長l = 190mm的普通同軸式he一e激光管，采用pid和自組織模糊控制模式可達(dá)到10一的穩(wěn)頻精度效果，并滿足預(yù)熱時(shí)間和抗干擾要求。 - 5 . a multivariable process identification based on asymptotic black - box theory is studied . firstly , a high - order mimo arx model and its frequency error bound is estimated from identification data and low - order siso models is obtained from high - order mimo arx model
作者對一種基于漸近黑箱理論的多變量過程辨識方法進(jìn)行了研究：首先用高階arx模型估計(jì)模型參數(shù)，并給出高階模型的頻域均方誤差；然后，對高階arx模型進(jìn)行降階處理。 - The coarse grids are obtained by agglomerating the fine grids . the solution of coarse grids is driven by the fine grids " residue , and the solution on the coarse grids is used to correct the solution on the fine grids , which can eliminated all parts of frequency errors on the fine grids
粗網(wǎng)格上的解由細(xì)網(wǎng)格上的殘值來驅(qū)動，粗網(wǎng)格上的解對細(xì)網(wǎng)格上的解進(jìn)行修正，這樣就能較快地消除細(xì)網(wǎng)格上解的高低頻誤差，加速解的收斂，提高計(jì)算效率。 - 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
針對基于循環(huán)頻率的盲波束形成算法對循環(huán)頻率誤差cfe ( cyclicfrequencyerror )很敏感而導(dǎo)致算法性能下降的情況，參照文獻(xiàn)[ 6 ]提出的遺忘因子cab算法，提出了c - cab算法以及基于特征空間的盲波束形成算法( ecab )的改進(jìn)算法。 - Chapter three provides synchronization algorithms in dvb - t cofdm receiver , including symbol timing recovery , carrier frequency error estimation and sampling timing recovery . chapter four introduces some channel estimation algorithms based on interpolation in dvb - t receiver . five estimators are compared , in terms of mean - squared error both in rayleigh channel and ricean channel
第三章首先討論了由于載波頻率偏差、符號定時(shí)偏差和采樣定時(shí)偏差對ofdm系統(tǒng)所造成的影響和干擾，然后針對dvb - t系統(tǒng)的cofdm接收機(jī)方案，分別給出了符號定時(shí)同步、頻率同步以及采樣鐘同步的實(shí)現(xiàn)算法，并對它們的性能進(jìn)行了分析仿真。 - And typical super heterodyne structure in rereiver part . this scheme benefited to reduce frequency error and phase error , and had the advantages of good dynamic range and selectivity , short exploitation cycle and small venture in the given performance demand , etc . this system implemented a six - layer hoard rf handset model together with baseband by using advanced eda tool veribest 2000
系統(tǒng)設(shè)計(jì)應(yīng)用hd155131的gsm900 dcs1800雙頻解決方案，發(fā)射機(jī)部分主要采用offsetpll方案，該方案有利于減小系統(tǒng)的頻率誤差和相位誤差；接收機(jī)部分采用典型的超外差式結(jié)構(gòu)，它具有優(yōu)良的動態(tài)范圍和選擇性，在給定的性能要求下具有開發(fā)周期短、風(fēng)險(xiǎn)小等特點(diǎn)。 - Experiments have demonstrated that , under the condition of constant temperature ( 20 ) , the frequency error of double - frequency laser interferometer with two longitudinal modes could be controlled within 10 " 9 even with conditions such as with cool or hot air blowing , it can still be kept within 10 " 7 . self - organised fuzzy control methods can be realised in a single - chip processor which contains fuzzy optimisation and self - organisation functions . the above - mentioned system possesses the following advantages : simple
/ znl (式中c為光速， l為諧振腔長， n為空氣折射率，其值約790mhz ) ，原理上對目前可能要求的測量速度都能滿足;它發(fā)出的光為一對互相垂直的線偏振光，與塞曼型雙頻激光干涉儀相比，它不用外加軸向磁場及1 / 4波片，因此結(jié)構(gòu)簡單，造價(jià)低廉。