Title :
A novel synchronization scheme in HDTV system with adaptive detection and low implementation complexity
Author :
Liu, Ke ; Zheng, Huarong ; Su, Jianing ; Shen, Bo ; Min, Hao
Author_Institution :
ASIC & Syst. State Key Lab, Fudan Univ., Shanghai, China
Abstract :
In this paper, a novel OFDM synchronization scheme with adaptive blind parameters detection is proposed, which utilizes a fast estimation method to obtain the key OFDM system parameters, including the FFT points number (2K/4K/8K mode) and the length of guard interval. These parameters guarantee the accuracy of the further system synchronization. Besides, the proposed scheme is also a joint solution, which realizes the blind parameter detection, symbol recovery and frequency synchronization in the same process. Due to such novel scheme and its further sign-bit implement optimization, circuit implementation complexity of the synchronization block is reduced greatly to a quite impressive 8.3% of that while using the traditional scheme.
Keywords :
OFDM modulation; adaptive estimation; blind source separation; fast Fourier transforms; frequency estimation; high definition television; signal detection; synchronisation; FFT; HDTV system; OFDM synchronization scheme; adaptive blind parameter detection; adaptive mode detection; circuit implementation complexity; frequency synchronization; low implementation complexity; symbol recovery; synchronization block; Adaptive systems; Application specific integrated circuits; Communication standards; Digital audio broadcasting; Digital video broadcasting; Frequency synchronization; HDTV; OFDM; Signal processing algorithms; State estimation; Adaptive Mode Detection; HDTV; OFDM; Synchronization;
Conference_Titel :
ASIC, 2005. ASICON 2005. 6th International Conference On
Print_ISBN :
0-7803-9210-8
DOI :
10.1109/ICASIC.2005.1611317
