1) block differential encoding
分组差分编码
1.
Based on the representation of the quadrature phase-shift keying(QPSK) as a continuous phase modulation(CPM) by adopting a block differential encoding rule,a novel modulation scheme called shaped quadrature phase-shift keying(SQPSK) is presented for the request of the deep-space communications that signal should be constant envelope.
采用一种分组差分编码的规则将QPSK表示成连续相位调制的形式,从而提出了一种适用于深空通信中使信号满足恒定包络要求的成形正交相移键控(SQPSK)调制方法。
2) differential encoding
差分编码
1.
32 standard are discussed in the paper,including the differential encoding,convolution encoding and Viterbi decoding,and the simulation results,which shows TCM Coding can improve the performance of the system.
32标准下32QAM-TCM仿真的具体细节,包括差分编码、卷积编码及维特比译码等部分,并给出仿真的结果,说明了TCM编码对系统性能的改善。
2.
32,including convolutional encoding,differential encoding and Viterbi decoding.
32建议给出的8状态32QAM 网格编码调制,包括卷积码编码,差分编码及维特比译码等部分。
3.
For the SOAP request, it realizes differential encoding by adding SOAP message skeleton, for the SOAP response, it compresses long message or realizes differential encoding of the short SOAP message.
对于SOAP请求消息,采用增加消息模版的方式实现差分编码,对于SOAP响应消息,根据消息的长短分别采用压缩或差分的方法来优化,减少带宽占用,使Web服务得到优化。
3) differential coding
差分编码
1.
The differential coding is performed in the time domain,while the space-frequency coding is processed in the frequency domain to achieve the diversity ga.
该方法在时域进行差分编码,而在频域进行空频编码以获得分集增益。
2.
Relationship is established in the transmitter using differential coding between the difference in SOPs of the optical signals in consecutive symbol periods and the input symbol of the differential encoder.
提出一种在电域进行四进制差分编码的偏振移位键控通信系统,可克服单模光纤中光偏振态随机扰动对接收效果的影响。
3.
Firstly,it is easy to predict the pixel s value;secondly,it reduces the relativity of the coded data by the differential coding technique that is beneficial to improving the compression capability.
在研究以往编码技术的基础上,根据差分编码的思想提出了一种基于灰预测的编码技术。
4) differential code
差分编码
1.
Based on the 16QAM Satellite Burst signal, this paper introduces the application of differential code to 16QAM communication system, and performs the computer simulation of 16QAM communication system by using Matlab to testfy it.
本文针对实际工作中接收到的16QAM卫星突发信号,对差分编码在16QAM传输系统中的具体应用进行了研究,并通过基于Matlab的计算机仿真进行了检验。
5) differential space-time block coding
差分空时分组编码
1.
In this paper,a novel cooperative diversity protocol with distributed differential space-time block coding is presented which can achieve full diversity with full rate with no need of channel state information(CSI).
本文提出了一种采用分布式差分空时分组编码和检测的协同分集方案,在不需要信道状态信息(CSI)的情况下可以实现满分集和全速率发射,并推导了相关瑞利信道下该方案误码率(BER)性能上限的解析表达式。
2.
After discussing the multi-user differential space-time block coding system,and analyzing the realizability of differential decoding method,we can draw the conclusion that the receiver can not decode the information of various users while the channel is unknown if multiple co-channel users in the system are synchronous.
通过分析和推导,指出在多用户差分空时分组编码系统中,发射端的多个共道用户采用同步编码和同步分组传输时,接收端无法在未知信道状态信息的情况下进行差分解码的结论。
3.
In this article,the structure of DSTBC(Differential space-time block coding) combined with OFDM system is .
本文研究了DSTBC(D ifferential Space-Tim e B lockCodes,差分空时分组编码)和OFDM(O rthogonal Frequency D ivisionMu ltip lexing,正交频分复用)技术相结合的系统收发机结构。
6) group coding
分组编码
1.
This paper puts forward a new blind digital image watermarking arithmetic based on quantization and pattern group coding.
提出了一个新的基于量化抖动和模式分组编码的盲数字图像水印算法,该算法首先在DWT(离散小波变换)的第二层中频子带中随机选取相应位置的绝对值最大的系数作为水印的嵌入区间,对小波系数进行量化并根据分组编码原理生成预嵌入模式,然后将一个二值水印图像嵌入到模式当中。
2.
It introduces a new blind digital image watermarking algorithm based on the group coding and resolution adjustment.
提出了一个新的基于分组模式编码和分辨率调整的盲数字图像水印算法,该算法首先在图像的空间域中随机选取相应位置系数的比特位作为水印的嵌入区间,对选出的比特位根据分组编码原理生成预嵌入模式,然后将一个二值水印图像嵌入到模式中并对其进行分辨率调整。
补充资料：电话簿分组
电话簿分组功能是将现有电话簿根据用户需要，自定义分组的一种电话簿附加功能。
这种功能的好处是用户可更容易的通过分组找到想找的人的电话号码和相关信息；另外，当用户想给一些人发同一短信时可以按组发送，免去了逐个读取电话号码的繁复工作（需手机具备群发功能）。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条