一种新颖的自适应判决电路  

A Novel Adaptive Decision Circuit

作　　者：陈浩琼[1] 吴嶽 

机构地区：[1]南开大学微电子科学系,天津300071

出　　处：《南开大学学报（自然科学版）》2006年第6期55-58,共4页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：天津市重点攻关项目(033187111)

摘　　要：理论推导了等概率二元码判决时误码率和判决电平的关系,推导表明误码率随着判决门限偏离最佳值急剧升高,因而提出了一种新颖的自适应判决电路,可以使判决门限跟随被判决信号的变化自动调整到最佳值.电路采用SM IC 0.35μm CM O S工艺设计,并给出了芯片针对于27MH z无线FSK信号的接收判决这一具体应用的测试结果.The relationship of BER versus decision level of equal probability Binary code was deduced in detail. It indicated that BER will increase drastically when decision level deviates from the optimum decision level. So a novel adaptive decision circuit was proposed which can automatically adjust its decision level to the optimum one. It was implemented in SMIC 0. 35μm CMOS technology and was used in the 27 MHz wireless FSK receiver.

关 键 词：判决门限 自适应 误码率 二进制频移键控 

分 类 号：TN432[电子电信—微电子学与固体电子学]