DPSK Signal Carrier Synchronization Module Implemented on the FPGA

2016 ◽  
Author(s):  
Yufei Yang ◽  
Zhuoming Li ◽  
Ricai Tian ◽  
Xiaolin Zhang
Keyword(s):  
Carrier Synchronization ◽  
Synchronization Module

Method to increase the working frequency of digital carrier synchronization module for high-speed digital coherent optical receivers

2017 ◽  
Vol 56 (08) ◽  
pp. 1
Author(s):  
Jiamin Li ◽  
Jian Yang ◽  
Sheng Cui ◽  
Wenjuan Xia ◽  
Zhixiang Luo
Keyword(s):  
High Speed ◽  
Optical Receivers ◽  
Carrier Synchronization ◽  
Synchronization Module ◽  
Working Frequency

An Algorithm of OQPSK Carrier Synchronization Based on Quadratic Spectrum

2011 ◽  
Vol 33 (4) ◽  
pp. 997-1001 ◽  
Author(s):  
Hua Peng ◽  
Jun-jie Wang ◽  
Hai-feng Ding ◽  
Xin Yang
Keyword(s):  
Carrier Synchronization

Carrier Synchronization

2006 ◽  
pp. 227-270 ◽  
Author(s):  
Marvin K. Simon ◽  
Jon Hamkins
Keyword(s):  
Carrier Synchronization

scholarly journals A novel demodulation algorithm for VHF Data Broadcast signals in multi-sources augmentation navigation system

2020 ◽  
Vol 16 (3) ◽  
pp. 155014772091477
Author(s):  
Hongwei Zhao ◽  
Zichun Zhang ◽  
Xiaozhu Shi ◽  
Yihui Yin
Keyword(s):  
Navigation System ◽  
Signal To Noise Ratio ◽  
Open Loop ◽  
Timing Recovery ◽  
Loop Structure ◽  
Frame Synchronization ◽  
Source Information ◽  
Carrier Synchronization ◽  
Data Broadcast ◽  
Training Symbol

The augmentation navigation system based on multi-source information fusion can significantly improve position accuracy, and the multi-source information is usually transmitted through VHF Data Broadcast . Aiming at the burst characteristics of VHF Data Broadcast, this article proposed a novel demodulation algorithm based on open-loop structure. When a VHF Data Broadcast burst is detected, the timing recovery should be finished first, and the value of cross-correlation between the timing-recovered signal and the local training symbol is calculated to complete the frame synchronization. Then, the data-aided and non-data-aided algorithms are used to estimate the frequency offset. Finally, the phase offset is estimated and the carrier synchronization is accomplished. The simulation results demonstrate that the proposed algorithm can quickly accomplished carrier synchronization without using feedback-loop structure, and the bit error rate is less than 10−4 when the signal-to-noise ratio is greater than 17 dB, which satisfy the requirement of receiving VHF Data Broadcast signals in augmentation navigation system. Therefore, the proposed algorithm can be used for receiving VHF Data Broadcast signals.

The Hardware Design of Measurement System of Transmission Lines Based on Wireless Communication

2015 ◽  
Vol 1092-1093 ◽  
pp. 366-369
Author(s):  
Shu Min Sun ◽  
Wen Juan Jiang ◽  
Yu Meng ◽  
Yan Cheng
Keyword(s):  
Wireless Communication ◽  
Data Storage ◽  
Measurement System ◽  
Transmission Lines ◽  
High Speed ◽  
Time Synchronization ◽  
Clock Synchronization ◽  
Report Generation ◽  
Test Efficiency ◽  
Synchronization Module

A set of measurement system for the testing of transmission lines, composing of wireless center station, wireless current acquisition and transmission nodes, wireless voltage acquisition and transmission node, was designed, which was based on wireless communication. The high speed wireless bridge working at 2.4GHz together with the clock synchronization module based on the IEEE1588 communicating protocol were both employed for the communication and time synchronization separately. The measurement system has data storage, waveform display, data analysis, automatic report generation and other functions. The measurement system can greatly reduced arrangement of cables, thereafter improved the test efficiency.

ML-oriented NDA carrier synchronization for general rotationally symmetric signal constellations

1994 ◽  
Vol 42 (8) ◽  
pp. 2531-2533 ◽  
Author(s):  
M. Moeneclaey ◽  
G. de Jonghe
Keyword(s):  
Carrier Synchronization ◽  
Rotationally Symmetric ◽  
Signal Constellations
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