A novel synchronization scheme in HDTV system with adaptive detection and low implementation complexity
A novel synchronization scheme in HDTV system with adaptive detection and low implementation complexity
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DOI：
10.1109/icasic.2005.1611317
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发表时间：
2005-10
期刊：
影响因子：
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通讯作者：
Ke Liu;Huarong Zheng;Jia-ning Su;Bo Shen;Hao Min
中科院分区：
文献类型：
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作者：
Ke Liu;Huarong Zheng;Jia-ning Su;Bo Shen;Hao Min
该文提出了一种新的OFDM同步算法，该算法利用快速估计的方法获得OFDM系统的关键参数，包括FFT点数（2K/4K/8 K模式）和保护间隔长度。这些参数保证了进一步的系统同步的准确性。此外，该方案还是一种联合方案，在同一过程中实现了盲参数检测、符号恢复和频率同步。由于这种新颖的方案及其进一步的符号位实现优化，同步块的电路实现复杂度大大降低到相当令人印象深刻的8.3%，而使用传统的方案。
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.