An Efficient OFDM Timing Synchronization for CMMB System
スポンサーリンク
概要
- 論文の詳細を見る
An accurate and rapid synchronization scheme is a prerequisite for achieving high-quality multimedia transmission for wireless handheld terminals, e.g. China multimedia mobile broadcasting (CMMB) system. In this paper, an efficient orthogonal frequency division multiplexing (OFDM) timing synchronization scheme, which is robust to the doubly selective fading channel, is proposed for CMMB system. TS timing is derived by performing an inverse sliding correlation (ISC) between the segmented Sync sequences in the Beacon, which possesses the inverse conjugate symmetry (ICS) characteristic. The ISC can provide sufficient correlative gain even in the ultra low signal noise ratio (SNR) scenarios. Moreover, a fast fine symbol timing method based on the auto-correlation property of Sync sequence is also presented. According to the detection strategy for the significant channel taps, the specific information about channel profile can be obtained. The advantages of the proposed timing scheme over the traditional ones have been demonstrated through both theoretical analysis and numerical simulations.
著者
-
Hu Jun
State Key Lab of Power Systems, Department of Electrical Engineering, Tsinghua University
-
Wang Yong
State Key Laboratory Of Electroanalytical Chemistry Changchun Institute Of Applied Chemistry Chinese
-
Ai Bo
State Key Lab. Of Rail Traffic Control And Safety
-
GE Jian-hua
State Key Lab. of Integrated Services Networks, Xidian University
関連論文
- Nickel oxide doping effects on electrical characteristics and microstructural phases of ZnO varistors with low residual voltage ratio
- Spectrophotometric Determination of Cysteine with Gold Nanoparticles Stabilized with Single-stranded Oligonucleotides
- Spectrophotometric determination of cysteine with gold nanoparticles stabilized with single-stranded oligonucleotides
- NMR Spectra and Potentiometry Studies of Aluminum (III) : Binding with Coenzyme NAD ^+ in Acidic Aqueous Solutions
- Potentiometric and Multi-NMR Studies of Aluminum(III) Complex with L-Glutamate in Acidic Aqueous Solutions
- Performance of Quasi-Orthogonal Time Division Multiplexing in Fading Channels(WSANE2006)
- Performance studies for MSE-OFDM, OFDM and Single-Carrier systems in frequency selective fading channels(WSANE2006)
- Spectrum Handoff for Cognitive Radio Systems Based on Prediction Considering Cross-Layer Optimization
- Frequency Offset Estimation for OFDM in Frequency Selective Channel Using Repetitive Sequence
- Robust Fractional Order Memory Polynomial Based Pre-Distorter
- Sum Rate Optimization in Multiuser Cognitive Radio Networks
- An Efficient OFDM Timing Synchronization for CMMB System
- Sum Rate Optimization in Multiuser Cognitive Radio Networks
- Cooperative Gain and Cooperative Region Aided Relay Selection for Decode-and-Forward Relaying Protocols