A Concept for Data-Aided Carrier Frequency Estimation at Low Signal-To-Noise Ratios

Godtmann, S.; Hadaschik, Niels; Steinert, W.; Ascheid, Gerd

doi:10.1109/icc.2008.92

Cited by 9 publications

(7 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Refer to the estimation variance derivation of D-spaced estimator in [14], we can prove that the variance of the normalized frequency estimation of equation (7) is as follows:…”

Section: Carrier Synchronization Algorithm Based On the Summatiomentioning

confidence: 99%

“…To achieve large estimation range and high estimation accuracy, we choose Preamble-Middle (PM) pilot structure. References [7][8][9]14] have presented the idea of coarse carrier synchronization based on the time-domain correlation of pilot symbols. In this paper the estimation algorithm based on timedomain correlation is applied to the fine synchronization process for the first time.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Joint time-domain correlation and code-aided carrier synchronization algorithm

Sun

Wang

2013

2013 IEEE International Conference on Signal Processing, Communication and Computing (ICSPCC 2013)

View full text Add to dashboard Cite

Considering low estimation accuracy and small synchronization range of carrier synchronization algorithms in low signal-to-noise ratio (SNR) for short burst communication systems, a joint time-domain correlation and code-aided carrier synchronization algorithm is proposed. Firstly, a frame structure in which the pilot symbols are separated with data symbols is used. Then, a new frequency estimation method using the summation of the entire cross correlation is deduced based on the time-domain correlation frequency estimation criterion. Based on this, the summation of the cross correlation of the pilot symbols after removing modulation is utilized to perform coarse synchronization and of the pilot symbols and decoding soft information is utilized to perform fine synchronization. So a joint time-domain correlation and code-aided carrier synchronization algorithm is obtained. Simulations by the Turbo code verify that the proposed algorithm can obtain higher estimation accuracy with only 32 QPSK pilot symbols, and the SNR degradation of Turbo decoder is within 0.5dB when the normalized frequency offset is smaller than 1.5×10 -3 .

show abstract

“…Refer to the estimation variance derivation of D-spaced estimator in [14], we can prove that the variance of the normalized frequency estimation of equation (7) is as follows:…”

Section: Carrier Synchronization Algorithm Based On the Summatiomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Joint time-domain correlation and code-aided carrier synchronization algorithm

Sun

Wang

2013

2013 IEEE International Conference on Signal Processing, Communication and Computing (ICSPCC 2013)

View full text Add to dashboard Cite

show abstract

“…Generally, 12 NN  as shown in Fig.1 N and 2 N , can be designed according to the estimation accuracy of maximization periodogram and the estimation range of cross-correlation algorithm, both satisfying the requirements of estimation accuracy and obtaining higher spectrum efficiency. In addition, the code-aided EM algorithm and cross-correlation using pilot blocks with far distance are also considered in the fine estimation to improve the estimation accuracy further.…”

Section: Advances In Computer Sciencementioning

confidence: 99%

“…When the EM algorithm [5][6] is applied to the case of synchronization, the carrier synchronization parameters are iteratively estimated from the incomplete data r (the received signal vector) when there exists the nuisance parameter vector s (the transmitted symbols 12 ( , ,..., ) NL s s s  ). In the fine estimation, we consider introducing code-aided synchronization to further improve the estimation performance.…”

Section: B Fine Estimationmentioning

confidence: 99%

See 1 more Smart Citation

Hybrid Data-Aided and Code-Aided Carrier Synchronization Schemes for Burst-Mode Communications

Sun¹,

Cheng²

2017

Proceedings of the 3rd International Conference on Wireless Communication and Sensor Networks (WCSN 2016)

View full text Add to dashboard Cite

Abstract-For burst communication systems, high estimation accuracy and large estimation range cannot be achieved at the same time at low signal to noise ratio(SNR), a hybrid dataaided(DA) and code-aided(CA) carrier synchronization scheme is proposed. Firstly, the synchronization parameters coarse estimation is performed based on maximization of periodogram and cross-correlation algorithm utilizing known pilot symbols. Secondly, the fine estimation is obtained based on expectationmaximization (EM) algorithm exploiting the pilot symbols and soft information from the extended Turbo decoder. On the basis, the cascade of periodogram maximization and multiple crosscorrelations has been proposed, which improves the estimation performance with low complexity. Simulation results show that the proposed algorithm can satisfy the requirements of frequency estimation range and accuracy, BER performance of Turbo decoding is very close to perfect synchronization and the estimation range can reach half of the symbol rate at a relatively efficient pilot cost.

show abstract

Carrier Synchronizator in Nonbinary LDPC Coded Modulation Systems

Zhang

Bai

2018

Communications and Networking

View full text Add to dashboard Cite

A Concept for Data-Aided Carrier Frequency Estimation at Low Signal-To-Noise Ratios

Cited by 9 publications

References 9 publications

Joint time-domain correlation and code-aided carrier synchronization algorithm

Joint time-domain correlation and code-aided carrier synchronization algorithm

Hybrid Data-Aided and Code-Aided Carrier Synchronization Schemes for Burst-Mode Communications

Carrier Synchronizator in Nonbinary LDPC Coded Modulation Systems

Contact Info

Product

Resources

About