标签: 码型

NRZ测试码型的频谱成分NRZ(11000001010011111010)(NRZ)NRZPRBSXPRBSNRZNRZNRZ)SONETSDH22327-1PRBS(1272X-1PRBS()NRZK28.5±8b10b(PRBS)(X)2X-1PRBS)8b10b-1PRBS(840NRZNRZNRZ(Tb)(1)(0)NRZNRZNRZ(PSD)(a)(b)1PSDNRZ50%(CID)CID10((s[t]=Acos[2πf0t])NRZ)2deltaAδ(t)t0A8b10b8b10b10()8CID1010(BER)64b66bBERSONET64b66bCIDSDH(10(n/T)A/T)(delta*)deltadelta8A∑nδ(t-nT)deltaT10deltadeltadelta2NRZPSD(1)L=nTb((1a)PSD01)1asinc2(f)661.25Gbps2Tb34(1110312.5MHz(1/L)sinc2(f))1.25GHz(1/Tb)((1b))(11c)1.25Gbps2.5GHz(2/Tb)(delta)sinc2(f)sin(πf)/(πf)(c)sinc2(f)sinc2(f)(sinc(f)(b))sinc2(f)201.25Gbps((K28.5±4)(1.25GHz4)2.5GHz)125MHz……