多波长光盘读出信号MPRML检测性能仿真计算  

Simulation on MPRML detection of readout signals from multi-wavelength optical disks

作　　者：菅冀祁[1] 马骋[1] 李珂[1] 贾惠波[1] 

机构地区：[1]清华大学精密仪器与机械学系,北京100084

出　　处：《仪器仪表学报》2006年第z2期1321-1322,共2页Chinese Journal of Scientific Instrument

基　　金：高等学校博士学科点专项科研基金(20020003014)

摘　　要：介绍了多波长光盘读出信号MPRML检测的基本原理,并对两种部分响应目标情况下该方法的检测性能进行了仿真计算与分析。在仿真计算所用假设条件下,当波长间串扰系数为0．39、信噪比为23dB时,两种MPRML均可将误码率降低到10-4以内,MPRML检测对波长间串扰的抑制有效。仿真计算表明,当部分响应目标与多波长光存储系统脉冲响应特性较为接近时,检测效果更好。The basic principle of MPRML detection for the readout from multi-wavelength optical disks has been introduced and its performance has been simulated and analyzed with two kinds of PR modes. On the assumed conditions, computer simulation shows that both of the two PR modes could decrease the BER to less than 10-4 and both of them are useful to suppress the inter-wavelength crosstalk when the crosstalk coefficient is 0. 39 and SNR is 23dB. It also shows that if the PR mode similar with the pulse response characteristic of the multi-wavelength optical storage system,it could get better performance.

关 键 词：光存储 多波长 信道检测 PRML 

分 类 号：TH7-55[机械工程—仪器科学与技术]