Frequency estimation for the downlink of the UMTS-TDD component

Author

Morelli, Michele ; Mengali, Umberto

Author_Institution

Dept. of Inf. Eng., Pisa Univ., Italy

Volume

1

Issue

4

fYear

2002

fDate

10/1/2002 12:00:00 AM

Firstpage

554

Lastpage

557

Abstract

We propose a carrier frequency recovery scheme for the downlink of the time-division duplex (TDD) component of the Universal Mobile Telecommunications System (UMTS). The frequency estimator exploits the midamble of the common control channel and takes into account that the frequency offset allowed in the UMTS-TDD is small compared to the chip rate. Simulations are used to assess the accuracy of the proposed scheme assuming diversity reception and a frequency selective channel. It is found that good performance can be achieved with a limited computational load.

Keywords

cellular radio; code division multiple access; diversity reception; frequency estimation; multiuser channels; radio links; CCCH midamble; CDMA; UMTS-TDD; Universal Mobile Telecommunications System; carrier frequency recovery; carrier-frequency estimation; chip rate; code division multiple access; common control channel; computational load; diversity reception; downlink; frequency estimation; frequency offset; frequency selective channel; performance; simulations; time-division duplex component; 3G mobile communication; AWGN; Diversity reception; Downlink; Fading; Frequency diversity; Frequency division multiaccess; Frequency estimation; Maximum likelihood estimation; Multiaccess communication;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2002.804173

Filename

1045285