qpsk
- 网络正交相移键控(Quadrature Phase Shift Keying)；四相相移键控；四相移相键控
qpskqpsk
正交相移键控(Quadrature Phase Shift Keying)
由于正交相移键控 (QPSK) 及 16 正交振幅调制 (QAM) 信号具有高峰值系数及零交叉特性，因此 W-CDMA 信号必须具有高度 …
四相相移键控
相干四相相移键控（QPSK）是一种节省带宽的调制方式， 它是正交载波复用技术的一个例子。 QPSK 与二进制PSK 一样，传 …
四相移相键控
同问四相移相键控(QPSK)调制及解调为什么相干解调时解调输出的基带信号是两电平的 2012-06-08 09:51 提问者： _児ò嚱 可 …
四相相移键控调制
•四相相移键控调制(QPSK)：调制效率高，要求传送途径的信噪比低，适合卫星广播。•多电平残留边带调制(VSB)：抗多径传播 …
四相键控
DVB - S 采用四相键控（QPSK）调制，而DVB - C 采用 正交幅度（QAM）调制。其原因很简单，CATV 传输环 境优于卫星的 …
四相移键控
BOC技术不同于传统的二相移键控(BPSK)和四相移键控(QPSK)调制，是一种通过分裂频谱信号将能量偏移远离载波频带中心 …
1
We study the use a continuous phase modulation (CPM) system providing mobile data service withQPSK transmission for a telemedicine system.
我们研究使用连续相位调制（CPM）的系统，提供移动数据服务QPSK调制传输的远程医疗系统。
2
The intermediate frequency band design adopts QPSK modulation technology to meet the requirement of fast moving transmission.
中频部分设计采用QPSK调制技术以满足快速移动传输的要求；
3
This paper gives the designing method of a PXI bus-based QPSK demodulation module based on the research of the PXI bus specification.
本文在研究PXI总线规范的基础上，设计了基于PXI总线的QPSK信号解调模块。
4
The demodulation of QPSK signals includes non-coherent demodulation and coherent demodulation.
QPSK信号的解调有非相干解调和相干解调。
5
In the rainfall circumstance the probability distribution of satellite channel capacity is analyzed in QPSK modulation and 4QAM modulation.
在降雨环境中，进一步研究了卫星通信系统在QPSK调制和4QAM调制下的信道容量的概率分布。
6
The traditional differential space-time block code(DSTBC) suffers from the signal constellation expansion for QPSK modulation.
传统的差分空时分组编码（DSTBC）在QPSK调制时存在着信号星座扩展。
7
QPSK modulation mode of Hamming encoding different signal to noise ratio in the quality of communication.
分析QPSK调制方式下Hamming编码方式在不同信噪比下的通信质量。
8
The algorithm suits for linear and nonlinear modulation, which is simple and can be realized all-digitally.
该算法计算量小，可全数字实现，适用于线性和非线性调制，利用QPSK调制信号进行仿真。
9
QPSK modulating process in FPGA and design of peripheral circuit are introduced in detail.
具体介绍了如何利用FPGA实现QPSK调制的各个处理过程，并进行了电路设计和调试。
10
A solution for realization of QPSK modulator with FPGA is presented.
提出了一种采用FPGA技术实现QPSK调制器的方案。
11
Thus, it is significant to implementQPSK modulation in the spread spectrum communication system.
所以将QPSK技术应用于扩频通信具有重要的工程意义。
12
With the developing of the space communication, the frequency spectral becomes more and more crowded, so the QPSK becomes a bottleneck.
随着卫星通信技术的飞速发展，使得有限的频带资源日益拥挤，成了应用“瓶颈”。
13
The project introduces: Digital MMDS 30 programs, QPSK way the entire coding has been completed.
工程简介：数字MMDS30套节目，QPSK调制，全编码方式已完工。
14
The project introduces: Digital MMDS 30 programs, QPSK way has been completed.
工程简介：数字MMDS30套节目，QPSK方式已完工。
15
Therefore, the study of all-digital QPSK modulation and demodulation based on FPGA has important significance.
因此，基于FPGA的全数字QPSK调制解调的研究具有重要的意义。
16
A method of realizing QPSK modulator based on FPGA is presented.
提出了一种基于FPGA实现QPSK调制器的方法。
17
Carrier synchronization technology on QPSK signal digital demodulation
QPSK数字化解调中载波同步技术研究
18
Performance and application of transmitting diversity in Rayleigh channel with QPSK modulation
QPSK调制方式下瑞利信道发端分集的性能分析及实现
19
Carrier Synchronization Recovery for QPSK Signal with Number Controlled Oscillator
利用数控振荡器对QPSK信号的载波恢复
20
Mento Carlo Simulation and Performance Analysis of QPSK Coherent Measurement Systems
QPSK相关检测系统蒙特卡罗仿真及其性能
21
An Algorithm for Rectifying Large Frequency-Offset in Fully Digitized QPSK Demodulation
一种用于全数字化QPSK解调的大频偏矫正算法
22
Study on phase ambiguity resolution of QPSK digital demodulation
QPSK数字化解调相位模糊校正方法研究
23
QPSK Digital Microwave Engineering recent client list
数字微波工程客户名录
24
Performance of QPSK in the presence of nonideal transmitters
非理想发射机情况下的QPSK性能分析
25
PLL-QPSK, phased-locked loop quadrature phase shift keying
锁相环四相相移键控
26
Effects of RF Channel Nonlinear Distortion on QPSK Signal
对射频信道非线性影响QPSK信号的分析
27
keying, quadrature phase shift (QPSK)
正交相位变换键控
28
A precise SNR estimation algorithm for QPSK signals
一种精确的QPSK信号信噪比估计算法
29
Research on synchronization of all digital QPSK receiver
全数字QPSK接收机同步技术研究
30
quadrature phase shift keying (QPSK)
四相移相键控