DQPSK相关论文
针对高集成度射频收发器(AD9361)实现差分正交调制解调(DQPSK)收发过程中存在的工程实现问题,采用理论分析与硬件平台实现相结合的......
Using differential detection, we perform polarization-multiplexing 160-Gb/s optical non-return-to-zero (NRZ) differentia......
Amplification and phase regeneration can be realized using a phase-sensitive amplifier (PSA). The phase regeneration of ......
随着光纤通信系统速率的不断提高,光纤中的偏振模色散(PMD)逐渐成为限制光纤通信系统性能的主要因素之一。当系统的传输速率达到40......
π/4DQSPK是一种适合于移动通信和个人通信系统的调制技术,由于其优越的性能,已被美国和日本数字蜂窝移动通信系统所采用,本文介绍了π......
文章对CableModem中使用的调制解调技术作了详细的介绍和分析 ,并给出了其在有关产品中的应用。最后对CableModem的发展前景做了分......
阐述利用一种新的π/4-DQPSK调制快速位定时捕获算法进行低速率数字移动突发通信,并利用TMSC54xDSP芯片实现该算法的关键技术。实验表......
A new universal algorithm of modulation and demodulation is presented to process most signals of digital phase-related ......
A new surface acoustic wave differential quadraphase shift key(SAW DQPSK) spread spectrum(SS) signal matched filter base......
差分预编码器是光差分相移键控调制(DQPSK)中的重要组成部分.不同的光DQPSK调制方式和接收模型需要不同的差分预编码器.现有的光DQ......
A cost-effective 100-Gb/s transmitter with low-speed optoelectronic devices and high spectral effici
A 100-Gb/s high-speed optical transmitter is proposed and experimentally demonstrated.Based on frequency-quadrupling tec......
提出了一种基于差分马赫-曾德尔调制器(MZM)产生80 Gbit/s高速率差分相移键控归零码(RZ-DPSK)、差分相移键控载波抑制归零码(CSRZ-DPSK)......
In this paper,a new model based on an improved Brent Kung(BK) parallel prefix network(PPN) algorithm is proposed and rea......
This paper reports that the designed optical polarization mode dispersion compensator shows a good performance under the......
Using differential detection,we perform polarization-multiplexing 160-Gb/s optical non-return-to-zero(NRZ) differential ......
Impact of the distribution pattern of fast polarization scrambler on the performance of PMD mitigati
The combination of fast polarization scrambler (FPS) and forward error correction (FEC) is one of the methods to mitigat......
A novel scheme to generate 40-GHz CSRZ pulse trains using a 10-GHz dual-parallel Mach-Zehnder modula
A new technique to generate 40-GHz carrier-suppressed return-to-zero(CSRZ) optical pulse trains using only a 10-GHz dual......
This letter proposes and experimentally demonstrates a simple scheme for generating 40-GBaud carriersuppressed return-to......
该文首先分析了GSM网络语音传输体系结构和GSM移动终端的构成,提出了在基带处理之前进行语音国密的设计方案.然后介绍了模拟无线语......
该论文基于软件无线电思想,提出了一个数字音频广播发射机的设计方案.在介绍系统基本概念的基础上,对发射机基带处理过程进行了详......
软件无线电技术是当前的一项新兴的技术,已经成为无线通信的一个重要的研究方向,而TI公司的TMS320C6711系列高速浮点芯片是目前的......
本文以电子不停车收费系统课题为背景,设计并实现了基于FPGA的π/4-DOPSK全数字中频发射机和接收机。π/4-DQPSK广泛应用于移动通信......
本文介绍了用89C51单片微机控制直接数字频率合成器(DDS)实现短波跳频/四相差分键控(FH/DQPSK)调制系统的调制过程,着重讨论了单......
四相差分相移键控(4DPSK=DQPSK)调制 由模拟的声音信号转换而得到的二进制数字序列,不能直接传送,必须将其对高频载波信号的幅度......
9913351一种新型短波 ALE 调解器研究及性能分析[刊]/罗宁//电子学报.—1999,27(4).—140~142(A)9913352固态线型调制器技术[刊]摩......
卫星通信和短波通信是远距离移动通信的两种主要手段。对军事战术电台而言,卫星在战争期间易于被干扰和阻塞甚至把毁而失去通信能力......
光差分四相移键控(DQPSK)信号解调技术是相位调制光纤通信系统中的关键技术,本文利用钒酸钇(YVO4)晶体设计制作了2 bit延迟干涉仪(......
日本的地面数字声音广播方式与地面数字电视广播方式有很多共同点,适合于多媒体业务和移动接收。在 1999年 11月末,由日本电气通信......
HP8657D Pi/4 DQPSK信号发生器可产生模拟及数字调制信号,可满足北美和日本数字蜂窝网无线设备的测试需要。这一新仪表在HP 8657 ......
广播电台内节目素材信号的传送是多点到多点传送为其特征的,而以多个光波复用的光分配系统较为有效。如今,日本广播协会(NHK)广播......
低速率、大频偏PSK信号的调制解调是工程中一个较大的技术难题。本文阐述了一种用数字信号处理(DSP)技术解决此难题的方法,着重而......
In this letter, a universal receiver structure with modulation classification and synchronization recovery for MDPSK si......
DQPSK modem has been chosen as the modem scheme in many mobile communication systems. A new signal processing technique ......
文章首先介绍了DQPSK直扩调制解调器的设计原理,然后对差分编码、功率检测、差分解调和频差检测模块中所用的算法作了推导,并且对......
提出以改进型双二进制归零码(MD-RZ)信号作为标记,分别采用差分相移键控非归零码(NRZ-DPSK)信号和差分正交相移键控非归零码(NRZ-D......
近几年,光纤通信系统逐渐开始采用差分相移键控(DPSK),因为它比传统的OOK凋制方式提高3dB的光信噪比,而DQPSK由于理论上更优秀的性能......
介绍了三种新型调制编码技术(DPSK,DQPSK,2-pol QPSK),结合目前40Gbps系统实例。对新调制技术进行分析,并比较各调制技术的总体特性、......
All-optical amplitude-shift keying and differential phase-shift keying to differential phase amplitu
We propose an all-optical modulation formats combination scheme that merges an amplitude-shift keying (ASK) signal and a......
A novel non-feedback precoder circuit for high-speed parallel optical differential quadrature phase shift keying (DQPSK)......
A novel architecture for wavelength-division-multiplexing passive optical network (WDM-PON) with centralized light-wave ......
Experimental demonstration and analysis of all-optical label swapping based on RZ-DQPSK/IRZ-ASK modu
A novel optical return zero differential quadrature phase shifted keying/inverse return zero amplitude shifted keying(RZ......
互联网业务的迅猛发展,对骨干传输网提出了更高的传输速率要求,在此背景下,40 Gbit/s光传输系统应运而生。介绍了40 Gbit/s光传输......
提出一种新的光反转归零码-差分正交相移键控(IRZ-DQPSK)调制方案,该方案所产生的IRZ信号相位连续,易于与相位调制信号相结合,占空......
Performance improvement of a coherent optical fiber communication system with the phase estimation a
The phase estimation based on M-th power algorithm is employed in a differential quadrature phase-shift keying (DQPSK) c......