scholarly journals [Paper] A Study on Timing Recovery for High-Recording-Density Tape Systems

2016 ◽  
Vol 4 (4) ◽  
pp. 296-300
Author(s):  
Atsushi Musha ◽  
Osamu Shimizu ◽  
Yasuaki Nakamura ◽  
Yoshihiro Okamoto
Keyword(s):  
Timing Recovery ◽  
Recording Density

A Study of Timing Recovery for High-Recording-Density Tape Systems

2015 ◽  
Vol 51 (11) ◽  
pp. 1-4 ◽  
Author(s):  
Atsushi Musha ◽  
Osamu Shimizu ◽  
Yasuaki Nakamura ◽  
Yoshihiro Okamoto
Keyword(s):  
Timing Recovery ◽  
Recording Density

Hangup in asynchronous timing recovery loops

1993 ◽  
Vol 29 (22) ◽  
pp. 1914 ◽  
Author(s):  
D. Verdin ◽  
T.C. Tozer
Keyword(s):  
Timing Recovery

Read-head Conditions for Obtaining Areal Recording Density of 5.8 Tbit/in.2on a Bit-Patterned Medium

2013 ◽  
Vol 52 (1R) ◽  
pp. 013002
Author(s):  
Fumiko Akagi ◽  
Junko Ushiyama ◽  
Harukazu Miyamoto ◽  
Seiichi Mita
Keyword(s):  
Recording Density ◽  
Read Head

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.

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