Transport triggered architecture to perform carrier synchronization for LTE

2014 ◽  
Vol 13 (4) ◽  
pp. 1-15
Author(s):  
Omer Anjum ◽  
Mubashir Ali ◽  
Teemu Pitkänen ◽  
Jari Nurmi
Keyword(s):  
Carrier Synchronization ◽  
Transport Triggered Architecture

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

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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