An efficient and hybrid timing offset estimation approach for universal-filtered multi-carrier based systems over multipath Rayleigh fading channel

Li, Yunhua; Tian, Bangsen; Yi, Kechu; Yu, Quan

doi:10.1016/j.dsp.2017.10.015

Cited by 6 publications

(6 citation statements)

References 22 publications

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“…Proposed algorithm Ideal correlation algorithm in [6] Algorithm in [9] S&C algorithm in [23] Improved S&C algorithm in [7] Improved S&C algorithm in [8] (a) NMSE of timing offsets Bit Error Rate Estimated t and H with proposed algorithm Known channels with perfect synchronization Known channels with algorithm in [6] (b) Bit error rate For the first experiment, as shown in Fig. 4(a), to compare with the proposed estimator, we consider five methods, i.e., the ideal correlation algorithm [5], algorithm in [8], and the S&C algorithm [20] with its two improved methods [6], [7]. All these algorithms are based on training sequences with specially designed structures.…”

Section: Nmse Of Timing Offset Estimationmentioning

confidence: 99%

“…It is regarded as the ideal case of correlation algorithms due to ignoring the overhead and sub-band filters. Similarly, algorithm in [8] also designs the output signal of sub-band filters directly, to structure a desired training sequence. Because of the reduced number of using symbols, the accuracy of algorithm in [8] declines in case of low SNR, e.g., SN R < 4dB.…”

Section: Nmse Of Timing Offset Estimationmentioning

confidence: 99%

“…Similarly, algorithm in [8] also designs the output signal of sub-band filters directly, to structure a desired training sequence. Because of the reduced number of using symbols, the accuracy of algorithm in [8] declines in case of low SNR, e.g., SN R < 4dB. The above mentioned two methods are theoretically able to use in any systems including UFMC, however, there remain problems in physical implementation.…”

Section: Nmse Of Timing Offset Estimationmentioning

confidence: 99%

“…For the second experiment, as shown in Fig. 4(b), to verify the statements of the proposed algorithm working in UFMC system, we perform comparison of the BER curves between algorithm in [8], the proposed algorithm and the ideal condition which is set as known channel with perfect synchronization. It is obvious that the proposed algorithm performs much lower BER than the algorithm in [8] (with known channels).…”

Section: Nmse Of Timing Offset Estimationmentioning

confidence: 99%

“…Existing TO estimation methods for UFMC, e.g. [5]- [8], [20], are originated from that of OFDM. The essence of these methods is to form a specially designed training sequence, which is then used at receivers to estimate TO through finding the peaks of the correlation function curves.…”

Section: Introductionmentioning

confidence: 99%

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Joint Timing Offset and Channel Estimation for Multi-User UFMC Uplink

Chu

Wang

2020

IEEE Wireless Commun. Lett.

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Universal filtered multi-carrier (UFMC), which groups and filters subcarriers before transmission, is a potential multi-carrier modulation technique investigated for the emerging Machine-Type Communications (MTC). Considering the relaxed timing synchronization requirement of UFMC, we design a novel joint timing synchronization and channel estimation method for multi-user UFMC uplink transmission. Aiming at reducing overhead for higher system performance, the joint estimation problem is formulated using atomic norm minimization that enhances the sparsity of timing offset in the continuous frequency domain. Simulation results show that the proposed method can achieve considerable performance gain, as compared with its counterparts.

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