companding
英
美
n. 压（缩）扩（展，张）；压伸
双语例句
- The Peak-Average Power Ratio Reduction Method Based on Statistic Companding for SC-FDMA Systems
SC-FDMA系统中基于统计压扩的峰均功率比减小方法 - Reducing Peak to Average Power Ratio Based on Low Complexity Companding Technique A Novel Scheme Based on Companding Transformation to Reduce PAPR in OFDM Systems
基于压扩变换的低复杂度PAPR降低技术研究一种降低OFDM系统峰均功率比的压扩变换方法 - A Novel Scheme Based on Companding Transformation to Reduce PAPR in OFDM Systems
一种降低OFDM系统峰均功率比的压扩变换方法 - This paper make researches on the usual algorithms of reducing PAPR and propose a combined algorithm which is based on the PTS algorithm and Companding algorithm.
在分析降低PAPR的常用算法的基础上，提出一种基于部分传输序列（PTS）算法和压扩变换（C变换）算法的联合算法。 - PAPR Reduction in OFDM Systems via Carrier Interferometry and Companding Transform
基于载波干涉和压扩技术的OFDM系统PAPR降低算法 - Amplified, and disseminated. Influence of A-Law Companding Characteristic on Small Signals Added to Big Signals
A律压扩特性对大信号上叠加小信号的影响放大信号具有90相位差的放大器 - In order to reduce the peak-average power ratio ( PAPR) of single carrier-frequency division multiple access ( SC-FDMA) system, a new method based on statistic companding was proposed.
为了减小单载波频分多址接入系统（SC-FDMA）的峰均功率比（PAPR），提出了基于统计压扩的新方法。 - Simulation results show that compared with clipping and the traditional companding techniques, threshold-based companding scheme can effectively improve the performance of PAPR with low complexity.
仿真结果表明，与削波技术和传统的压扩技术相比，门限压扩以较小的系统复杂度获得了峰均比性能的改善。 - Companding is a useful technique for improving the signal to noise ratio ( SNR) over poor radio channels.
压扩技术作为提高伟输信号信噪比的有效手段，在通信系统中得到了广泛应用。 - For practical applications, linear, nonlinear-symmetrical and nonlinear-quasi-symmetrical companding transform schemes are analyzed in terms of their companding effects, computational complexity, and improvement in BER performance in OFDM systems.
作为应用实例，本文分析了线性压缩扩张、非线性对称压缩扩张和非线性准对称压缩扩张的PAPR改善幅度、计算复杂度、及其用于OFDM系统时对系统误比特率（BER）的改善等方面的性能。 - For the effect of PAPR of OFDM signals reduction, an improved companding scheme was proposed based on threshold. The scheme uses the companding technique based on the simple clipping technique.
为了降低OFDM信号的高峰均功率比，在削波技术简单直接的基础上，应用压扩技术，提出了一种基于门限的降低峰均功率比的改进压扩方案。 - This paper presents two reversible data hiding methods based on integer wavelet, namely spread-spectrum method and companding method.
介绍两种基于整数小波的无损数据隐藏方法，分别称为扩谱方法及压缩扩展方法。 - A method using μ-law companding algorithm is presented to reduce the system PAPR. The PAPR distributions of OFDM systems are analyzed.
提出使用μ-law压扩算法降低OFDM系统PAPR（峰值平均功率比），对PAPR概率分布进行了理论分析。 - A Fast Wavelet Collocation Method with Nonlinear Companding in Time Domain
基于时域非线性压缩-扩张的快速小波配置法 - A new method for reducing the PAPR of OFDM signal by using companding algorithm
一种采用压扩算法来降低OFDM信号PAPR的新方法 - This paper discusses a code converter which converts A-Law PCM to Adaptive Syllable Companding DM ( ADM) and from ADM to A-Law PCM. In order to perform the conversion, we adopt a kind of special filter-multirate filter.
本文讨论了一种码变换器，它实现了A律PCM与音节压扩DM（ADM）间的码型变换，该变换采用了一种特殊滤波器（多速率数字滤波器）。 - Then it analyzes the disadvantage of limited breadth filter and improve the companding method. Finally it uses MATLAB software to simulate the new method.
在分析限幅滤波方法的基础上，对压缩扩展方法进行了改进，并利用MATLAB软件进行了仿真分析。 - The performance of near-instantaneous companding ( NIC) for use with PCM communication is discussed and the near-instantaneous expander developed is briefly described.
本文分析了PCM通信中的准瞬时压扩（NIC）的性能，介绍了我们研制的准瞬时扩张电路。 - In contrast to ASD method, it is simple and adopts the adaptive companding quantization.
与ASD子带分解法相比，它的复杂度低，且采用了自适应压扩量化。 - The performance of a proposed DPCM system with adaptive companding quantization ( ACQ-DPCM) is studied at various bit-rate and compared with the conventional DPCM system.
本文在笔者提出的一种量化方法基础上研究了自适应压扩量化DPCM（ACQ&DPCM）系统在不同码率下的性能并与相同码率的基本DPCM系统的性能进行了比较。 - The LPC theory and practice in speech companding
语音信号压扩的LPC理论与实践 - The latter deals with the signal by companding with fraction exponent.
分数指数压缩扩展算法采用了分数指数函数曲线进行压缩扩展。 - Implementation of Wavelet Function Based on Instantaneous Companding Differential Circuits
瞬时缩展微分电路实现小波函数的方法 - Log-domain filter is a typical instantaneous companding circuit.
瞬时缩展技术运用的一个典型实例就是对数域滤波器。 - Reduction of Peak-to-Average Power Ratio of OFDM System Using a Partial Companding Method
降低正交频分复用系统峰均功率比的部分压扩算法 - Using μ-law Companding Algorithm to Reduce the PAPR of OFDM Systems
使用μ-law压扩算法降低OFDM系统PAPR的分析 - Instantaneous companding technology resolves effectively the contradiction of low power supply voltage, noise and high-frequency capability and obtains an optimal dynamic range and low power under a lowest power supply voltage.
瞬时缩展电路技术有效地解决了低电源电压、噪声和高频性能的矛盾，使电路在最小电源电压下获得适当的动态范围和低功率。 - This method combining the combination of PTS and Non-Linear Companding Transform based on μ-law has better PAPR performance and lower bit error rate.
最后，本文提出了PTS与线性压扩的联合改进方案，此方案相比PTS与基于μ律非线性压扩的结合方案具有更好的PAPR性能，而且误码率更低。 - The Hadamard transforming technique with companding takes the advantage of the nonsinusoidal orthogonal transforming without complex multiply operation, so as to reduce the signal correlation.
Hadamard转换结合压扩变换技术降低OOFDM信号PAPR技术，主要是利用了Hadamard是非正弦正交变换，转换过程中没有复杂的乘法运算，而且可以改变信号的非周期自相关性。 - And use companding technique to control image distortion, and improve the compression rate of the binary location map get in the difference expansion process, thus increase the watermark embedding capacity.
并使用压扩技术实现对图像失真的控制，及提高差值扩展过程中得到的二值位置图压缩率，从而达到增大水印嵌入容量的目的。