信号波形调制多阶光盘信道部分响应多项式与均衡器的设计  

Partial Response Polynomial and Equalizer Design for Signal Waveform Modulation Multi-level Disc

作　　者：张龙[1] 倪国强[1,2] 裴京[3] 杨波[3] 

机构地区：[1]北京理工大学光电学院,北京100081 [2]光电成像技术与系统教育部重点实验室,北京100081 [3]清华大学光盘国家工程研究中心,北京100084

出　　处：《光子学报》2013年第11期1360-1364,共5页Acta Photonica Sinica

基　　金：国家自然科学基金(No.60977005)资助

摘　　要：采用信号波形调制多阶记录技术的多阶光盘,其读出信道识别采用了部分响应最大似然检测技术.这种多阶记录方式在提高记录密度的同时,也增加了光盘信道建模的复杂性和非线性.对此,本文提出了一种适用于这种高密度光盘的部分响应多项式及相应均衡器的优化参量设计的新方法.通过寻找光盘读出的高频信号功率谱密度曲线中有用信息频段与噪音频段的频率临界点,设计并实现了优化的部分响应多项式参量及与之匹配的部分响应均衡器,从而有效地提高了光盘读出信号的信噪比,降低了信号识别的误码率.这种方法也适用于蓝光光盘等其他高密度基带传输信道的部分响应最大似然检测系统的设计.The multi-level disc, which uses the signal waveform modulation method for modulation and recording, employs the partial response maximum likelihood detection techniques for the readout channel recovery. With improving the recording density, the complexity and nonlinearity of the optical disc channel modeling will also increase. Therefore, a optimized design method of the partial response polynomial and the corresponding equalizer design were introduced to solve it. By finding the critical frequency point between signal frequency band and noisy frequency band in the power spectral density curve of the disc readout signal, the optimized parameters of the partial response polynomial and the partial response equalizer were designed, thus effectively improving the optical readout signal to noise ratio, reducing the error rate of the signal recognition. And this method can also be applied to the partial response maximum likelihood detection system of blu-ray and other high-density baseband transmission channel.

关 键 词：多阶 信号 编码 游程 部分响应 均衡器 误码率 

分 类 号：TP302.7[自动化与计算机技术—计算机系统结构]