International Journal of Computer Network and Information Security(IJCNIS)

ISSN: 2074-9090 (Print), ISSN: 2074-9104 (Online)

Published By: MECS Press

IJCNIS Vol.3, No.3, Apr. 2011

A Frequency Estimation for TD-SCDMA UE Based on Phase Difference

Full Text (PDF, 644KB), PP.55-61

Views:69   Downloads:2


Ren-ming Peng,Zheng-tong Hao,Yang Mei

Index Terms

TD-SCDMA; sync-dl; cell search; frequency offset estimation


This paper describes a new method of frequency estimation in cell search of TD-SCDMA system. Before identifying the scrambling code and Midamble code, using part of sync-dl code data for frequency estimation; and before controlling the multi-frame synchronization, using part of Midamble code data for frequency estimation. Also these two sets of estimation can be done under the same frequency estimation structure by using the same 64 chip input in order to save hardware resources. The simulation results show that even with certain sample differences, this method can keep the residual frequency differences within 0.05 PPM by averaging out the subframe or by IIR filtering to satisfy the requirement of frequency estimation for TDSCDMA system.

Cite This Paper

Ren-Ming Peng,Zheng-Tong. Hao,Yang. Mei,"A Frequency Estimation for TD-SCDMA UE Based on Phase Difference", IJCNIS, vol.3, no.3, pp.55-61,2011.


[1]3GPP TS 25.105 V9.2.0 (2010-09): Base Station (BS) radio transmission and reception (TDD) (Release 9).

[2]3GPP TS 25.102 V9.3.0 (2010-12): User Equipment (UE) radio transmission and reception (TDD) (Release 9).

[3]U. Mengali, AND Andrea. Synchronization Techniques for Digital Receivers´╝ÄNew York: PlenumPress, 1997. 9-95.

[4]3GPP TS 25.221 V9.3.0 (2010-09): Physical channels and mapping of transport channels onto physical channels (TDD) (Release 9).

[5]J. Andrew. Viterbi, Principles of Coherent Communication, McGraw-Hill, New York, [1966].

[6]D. Rife, R. Boorstyn. Single-tone parameter estimation from discrete-time observations. IEEE Transactions on Information Theory, 1974, 20(5): 591-598.

[7]M. Luise, R. Reggiannini. Carrier frequency recovery in all-digital modems for burst-mode transmission [J]. IEEE Trans. Commun., 1995-02-03-04, 43: 1169-1178.

[8]W. Kuo, M.P. Fitz, Frequency offset compensation of pilot symbol assisted modulation in frequency flat fading´╝îIEEE Trans. on Commun., 1997, 45(11): 1412-1416.

[9]M. Morelli, U. Mengali, and G. M. Vitetta, Further results in carriefrequency estimation for transmissions over flat fading channels, IEEE Commun. Lett., vol. 2, no. 12, pp. 327-330, Dec. 1998

[10]M. G. Hebley and D. P. Taylor, The effect of diversity on a burst-carrier-frequency estimator in the frequency-selective multip channel, IEEE Trans. Commun., vol. 46, pp. 553-560, Apr. 1998

[11]M. Morelli and U. Mengali, Carrier-frequency estimation for transmissions over selective channels. IEEE Trans. Comm. 48 (2000), pp. 1580-1589.

[12]Fowler, M. L., Phase-Based Frequency Estimation: A Review, Digital Signal Processing12 (2002) 590-615.

[13]3GPP TS 25.223 V9.0.0 (2009-12): Spreading and modulation (TDD) (Release 9).