Fast Cell Search Method Using PSS and SSS Based on Frequency Offset Estimation for Heterogeneous Networks with Separate Frequency Spectrum

2015 ◽  
Author(s):  
Naoki Noguchi ◽  
Satoshi Nagata ◽  
Mamoru Sawahashi
Keyword(s):  
Frequency Spectrum ◽  
Heterogeneous Networks ◽  
Frequency Offset ◽  
Search Method ◽  
Frequency Offset Estimation ◽  
Cell Search

Frequency Offset Estimation in Cell Search for TD-SCDMA UE

2012 ◽  
Vol 195-196 ◽  
pp. 254-258
Author(s):  
Ren Ming Peng ◽  
Zheng Tong Hao ◽  
Yang Mei
Keyword(s):  
Frequency Offset ◽  
New Method ◽  
Frame Synchronization ◽  
Frequency Offset Estimation ◽  
Cell Search ◽  
Sample Bias ◽  
System Requirements ◽  
Simulation Results ◽  
Two Stages

This paper describes a new method to implement frequency offset estimation (FOE) in cell search of the TD-SCDMA system. The received SYNC-DL data is used to calculate frequency offset (FO) before the scrambling code and the Midamble ID is identified. The received Midamble data can be used to calculate FO before Multi-frame synchronization. The FOE with two stages can be used in the same 64chip calculation structure and the hardware resources can be conserved. The simulation results show that the method can control the residual FO within 0.05PPM by smoothing of sub-frame or IIR filtering, which meets the TD-SCDMA system requirements for residual frequency, even though a certain sample bias exist.

Research and Simulation for Frequency Offset Estimation Algorithm in TD-LTE System

2014 ◽  
Vol 513-517 ◽  
pp. 1063-1066 ◽  
Author(s):  
Fa Tang Chen ◽  
Cui Wan
Keyword(s):  
Estimation Algorithm ◽  
Frequency Offset ◽  
Signal Frequency ◽  
Search Process ◽  
Frequency Offset Estimation ◽  
Cell Search ◽  
Simulation Results ◽  
Peak Value

In the view of frequency excursion estimation in cell search process in TD-LTE system, synchronizing signal frequency excursion estimation algorithm can be proposed based on the autocorrelation of synchronizing signal. Integer frequency excursion and fine frequency excursion can be estimated according to the correlating peak value, so that frequency offset can be made. The simulation results show that frequency excursion can be estimated exactly by the synchronizing signal.

A Frequency Estimation for TD-SCDMA UE

2012 ◽  
Vol 532-533 ◽  
pp. 979-983
Author(s):  
Ren Ming Peng ◽  
Yang Mei
Keyword(s):  
Frequency Estimation ◽  
Frequency Offset ◽  
Frame Synchronization ◽  
Frequency Offset Estimation ◽  
Cell Search ◽  
Sample Bias ◽  
System Requirements ◽  
Simulation Results ◽  
Two Stages

It describes a method to implement frequency offset estimation (FOE) in cell search of the TD-SCDMA system. The received SYNC-DL data is used to calculate frequency offset (FO) before the scrambling code and the Midamble ID is identified. The received Midamble data can be used to calculate FO before Multi-frame synchronization. The FOE with two stages can be used in the same 64chip calculation structure and the hardware resources can be conserved. The simulation results show that the method can control the residual FO within 0.05PPM by smoothing of sub-frame or IIR filtering, which meets the TD-SCDMA system requirements for residual frequency, even though a certain sample bias exist.

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