Coherent Demodulation

A Study of Neural Network Based Coherent Demodulation for CPM Signals

CPM信号相干解调的神经网络方法研究

Carrier recovery and timing synchronization are two key technologies of coherent demodulation .

载波恢复和码元同步是相干解调的两个关键技术。

Experimental Study on Coherent Demodulation For Binary Chaos Shift Keying Signals

二进制混沌键控信号相关解调的实验研究

Performance Analysis of the Reverse Link Coherent Demodulation DS CDMA

DS-CDMA反向链路相干解调算法的性能分析

The focus of this paper is the coherent demodulation algorithm of GMSK signal .

本文的研究重点是GMSK信号的相干解调算法。

Coherent Demodulation of Chaos Shift Keying Signals Based on Contraction Maps

基于收缩映射混沌键控信号的相关解调

Study of High-speed Digital Coherent Demodulation

高速数字相干解调的研究

A Method of Bi carrier Frequency Difference Sidetone for Coherent Demodulation

一种双载频差侧音相干接收解调方法

Carrier Synchronization and Coherent Demodulation of Space-Time Modulation Carrying with Azimuth Message

载有方位信息的时空调制信号载波提取与相干解调

Carrier synchronization , as an important branch of synchronization technology , is the foundation of coherent demodulation .

其中，载波同步是同步的一个重要分支，是实现相干解调的基础。

In digital phase modulation system , there always exists carrier phase-ambiguity in the process of coherent demodulation .

在数字相位调制系统的相干解调过程中，普遍存在着载波相位模糊问题。

Coherent demodulation , which has good error performance , is one of the important ways in GMSK signal demodulation .

相干解调具有良好的误码性能，是GMSK信号解调的重要途径之一。

The Digital Phase Lock Loop ( DPLL ) is the core of the coherent demodulation .

数字锁相环路（DPLL）是数字相干解调技术的核心。

But the traditional coherent demodulation needs two different quadrature carriers , which increases the difficulty of the implementation of circuit .

但是传统的相干解调需要两路正交同相支路，这增加了解调实现的难度，因此本文提出一种单正交同相支路相干解调方案。

OFDM is realized by IFFT and coherent demodulation is by FFT .

OFDM其产生和相关解调是通过快速傅立叶反变换与傅立叶变换（IFFT和FFT）实现的。

By integrating the both parts of circuit together , digital coherent demodulation of base data with frequency and phase shift is implemented .

通过合理的设计，使频率估计、校正部分与相位估计、校正部分有机地结合在一起，实现存在一定频差与相差基带数据的数字相干解调。

By comparing the error rate of different demodulation schemes , it is revealed that coherent demodulation has the lowest error rate .

把各种解调方法的误码率相比较，可知相干解调的误码率为最小。

And channel state information is necessary in MIMO-OFDM system in order to obtain the diversity gain , make a coherent demodulation and decoding .

MIMO-OFDM系统的各种分集的利用、相干解调和解码等都需要用到信道的状态信息。

Channel state information is required both in the coherent demodulation of OFDM systems and in the space-time decoding of MIMO systems .

无论是OFDM系统中的相干解调，还是MIMO系统中的空时译码，都需要信道的状态信息。

Then , a general-purpose coherent demodulation module based on digital orthogonal transformation is introduced and the demodulation algorithm of specific signal is given .

接着介绍了基于数字正交变换的相干解调通用模块，给出了具体信号的解调算法。

An important advantage of the channel estimation is that it can make the coherent demodulation into possibility and improve the system performance to 3 dB .

它的一个重要的好处在于它使得相关解调成为可能，使系统性能得到3dB的提高。

While because of the different channel characteristics in each channel , the receiver needs some mechanisms to characterize the channel effects in coherent demodulation .

另外，各个子信道不同的信道特征，要求接收端相关解调用一定的机制来近似每个子信道的信道特征。

In this paper , a coherent demodulation scheme for chaos shift keying signals is presented , and formula for bit error rate is given .

提出了一种基于收缩映射的混沌键控信号解调方案，给出了系统误码性能的数学表达式。

An Automatic Amplitude-Controlled Integrator ( AACI ) for Coherent Demodulation with Variable Rates

一种用于可变速率相干解调的自动幅度控制积分器

In the receiver , the original multi-level digital signals are recovered according to the principle of drive-response synchronization and coherent demodulation .

在接收端，根据驱动-响应式同步和相关解调原理恢复出原来的多进制数字信号。

Carrier recovery is the key technology for coherent demodulation receiver in RF communication , and carrier recovery algorithm directly determiner the performance of the receiver .

载波恢复技术是无线电射频（RF）通信中相干解调接收机不可缺少的关键技术之一。

Most importantly , in the research of the MIMO MC-CDMA technology , channel estimation provides accurate channel state information for space-time decoding and coherent demodulation .

信道估计为空时解码和相干解调的完成提供了准确的信道状态信息，因此，研究MIMOMC-CDMA系统信道估计具有重要的现实意义。

Channel estimation is one of the most important techniques in WCDMA mobile communication systems . The channel estimation is the key part of coherent demodulation of RAKE receiver .

信道估计技术是WCDMA移动通信中非常重要的一项技术，它是相干RAKE接收的关键部分。

At the same time , multi-path signal coherent demodulation RAKE receiver is also proposed to solve the problem of radio loss factors caused by non-coherent demodulation .

同时，针对普通RAKE接收机在非相干解调时会引入射频损耗因子的问题，本文介绍了多径载波相干解调的概念。

Because of its wide bandwidth WCDMA , anti-fading performance , uplink and downlink to achieve coherent demodulation , a substantial increase link capacity .

WCDMA由于自身的带宽较宽，抗衰落性能好，上下行链路实现相干解调，大幅度提高了链路容量。