頻偏計 的英文怎麼說
中文拼音 [bīnpiānjì]
頻偏計
英文
frequency deviation meter-
The realization of quick acquest under very low snr and big frequency shift is one of the key problems of lpi radar. we designed a new receiver which needs less computation spend without any decline of the performance of the radar
如何在較低輸入信噪比和較大頻偏的條件下實現擴頻碼快速捕獲是碼同步的難點，本文在不損失系統性能的基礎上，設計了一種結構簡單的接收機實現方案。By complementing the proposed scheme with methods to estimate the fractional code delay, the acquisition unit an provide high quality delay estimates such that it can instead of the delay locked loop in the traditional ds receiver. after dispreading successfully, this dissertation introduces a method to estimate the doppler - shift directly from some samples based maximum likelihood estimation, and then revise it forwardly
在成功解擴之後，本文利用最大似然估計從l個樣點中直接估計出殘余多普勒頻偏，並進行前向頻偏校正，來代替傳統擴頻接收機中的科斯塔斯環，經模擬證明該方法的估計精度完全滿足解調的要求。The estimation of frequency offset is based on pilot symbols and non - pilot symbols. this paper also discusses some parameters in the method and gives the way of compensation. to get the estimation method of doppler spread width, we model the rayleigh channel based on the conclusion of gans ’ spectrum analysis based on clarke model
其中頻偏估計採用一種基於導頻符號和去極性非導頻符的方法進行估計，並通過試驗環境驗證了此方法，並確定了這個方法中的參數的取值，在此基礎上介紹了本系統中的頻偏補償方法。The ber expressions of different type jamming signal is calculated
推導了各種干擾方式的誤碼率計算公式及單頻干擾的最佳頻偏。11a framing structure. secondly, we analyze the frequency estimation algorithm in ieee 802. lla standard
Ofdm對載波頻偏十分敏感，接收機的頻偏估計能力是影響ofdm接收性能的重要因素。An algorithm of carrier frequency estimation of qam signals
信號載波頻偏估計演算法Algorithms of carrier frequency offset estimation in ofdm system
系統載頻偏移估計演算法的研究In the synchronous techniques based pilot symbols, here propose a frequency offset estimating arithmetic using discrete pilot symbols. we pick up integer times sub - carrier frequency offset from the same ofdm symbol and estimate exact
此外，在頻偏估計方面，推導出短訓練序列前後兩段時域符號間的關系，並利用此進行粗頻偏估計，使頻率偏移的估計范圍大大增加。An algorithm for estimating frequency deviation of high order qam carrier
信號載波頻偏估計演算法A fast fourier transform algorithm to estimate carrier frequency deviation
快速傅里葉變換載波頻偏估計演算法Analysis of nonlinear transformation in frequency offset estimation for qam signals
載波頻偏估計的非線性變換分析Carrier deviation meter
載波頻偏計In the section 1, we have introduced the background and the recent advance of the flattened gaussian beam ; in the section 2, for the first time, we have calculated the type - i and type - ii shg conversion efficiency and simulated curves versus the crystal length, the pumping light polarization rate, the order of the flattened gaussian beam and the pumped power intensity, we obtain ed that the highest efficiency was influenced by the order and the polarization rate of the pumped flattened gaussian beam
從三波耦合方程及clbo晶體的光學特性出發，討論了以平頂高斯光束入射時穩態的三波耦合方程的大信號倍頻解（包括類及類相位匹配的倍頻解） 。計算了其在clbo晶體上的倍頻轉換效率與晶體長度，基波偏振分量比，基波階數及泵浦波強度之間的相互影響關系曲線。得出影響平頂高斯光束的最高轉換效率的因素是基波的階數n和泵浦波的偏振分量比d 。In this paper, a variety of familiar signals and channels are firstly analyzed and then the methods of dft and cyclic correlation are introduced
本文在分析各種常見的通信信號和通道的基礎上，採用了離散傅立葉變換和循環相關方法解決信號載頻偏差的高精度估計問題。The problems of carrier frequency offset estimation under the condition of the agwn channel, frequency flat - fading channel and frequency selective - fading channel are studied in detail respectively
本文仔細研究了在高斯白噪聲通道下、頻率平坦衰落通道下和頻率選擇性衰落通道下高精度估計信號載頻偏差的問題，並對相應演算法提出了一些改進辦法。This paper deals with problems of high accurate estimation of carrier frequency offset which is widely used in communication signals synchronization and frequency measurement. therefore, it ' is very importance for interception and location of signals
通信信號載頻偏差的高精度估計廣泛應用於通信信號的同步和頻率測量當中，因此，對于信號的截獲和定位具有非常重要的作用。A kind of frequency offset estimation in ofdm systems
系統中的頻偏估計方法Frequency offset estimation for ofdm systems on leo satellite channel
系統頻偏估計演算法Frequency offset estimation in the ofdm system using wavelets transform
系統頻偏估計中的應用Ofdm based on frequency offset estimation method
系統頻偏估計方法分享友人