The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON COMMUNICATIONS
Transactions ID Number: 54-161
Full Name: Abdo Gaber
Position: Student
Age: ON
Sex: Male
Address: Mühlen Str. 15, 39104 Magdeburg
Country: GERMANY
Tel: 17652753532
Tel prefix: 0049
Fax:
E-mail address: abdonasser@daad-alumni.de
Other E-mails: abdonasser@gmail.com
Title of the Paper: Synchronization and Cell Search Algorithms in 3GPP Long Term Evolution Systems (FDD mode)
Authors as they appear in the Paper: Abdo N. Gaber, Loay D. Khalaf, Ahmad Mustafa
Email addresses of all the authors: abdonasser@daad-alumni.de,loaykhalaf@yahoo.com,mustafa@ju.edu.jo
Number of paper pages: 14
Abstract: In this paper initial downlink synchronization (sync) and cell identification algorithms for the 3rd generation partnership project (3GPP) long term evolution (LTE) systems are presented. The frequency division duplex (FDD) mode is used in the downlink radio frame structure. A user equipment digital receiver architecture is proposed. The orthogonality of signals in orthogonal frequency division multiplexing (OFDM) may be lost due to some impairments such as frequency, time, and phase offsets. Therefore, major parts of this research are involved in restoring the orthogonality at the user equipment (UE) by using some techniques to estimate the sync parameters, and to detect cell identity among candidate cells based on sync signals. A Farrow structure interpolator is used to compensate the fractional timing offset. Both inter site synchronous and inter site asynchronous networks are presented. Computer simulations are used to demonstrate the performance of the propose!
d schemes with multipath Rayleigh fading channel, frequency offsets, timing offsets, and additive white Gaussian noise (AWGN). Results show high probability of cell identification in a very short time 20 ms in both multi cell model scenarios, especially when multiple input multiple output (MIMO) technique, oversampling at the UE, and high order Farrow structure interpolator are used.
Keywords: 3GPP LTE, OFDM, MIMO, Frequency and Time Synchronization, Cell Search
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