发明名称 |
SYSTEM AND METHOD FOR 400G SIGNAL GENERATION AND COHERENT DETECTION |
摘要 |
<p>A novel digital signal processing scheme (DSP) for quadrature duobinary (QDB) spectrum shaped polarization multiplexed quadrature phase shift keying (PM-QPSK) based on multi-modulus blind equalizations (MMBE) is proposed and demonstrated with both simulation and experimental results. The key algorithms for this novel digital signal processing scheme include the cascaded multi-modulus algorithm (CMMA) for blind polarization de-multiplexing, multi-modulus QPSK partitioning frequency offset estimation (FOE) and two stage carrier phase recovery (CPR) with maximum likelihood phase estimation. The final signal is detected by maximum-likelihood sequence detection (MLSD) for data BER measurement. The feasibility of the proposed digital signal processing scheme is demonstrated by the experiment of 112 Gb/s QDB spectrum shaped PM-QPSK signal with a 25 GHz bandwidth waveshaper for Nyquist WDM channels.</p> |
申请公布号 |
EP2888826(A1) |
申请公布日期 |
2015.07.01 |
申请号 |
EP20130831557 |
申请日期 |
2013.08.15 |
申请人 |
ZTE (USA) INC. |
发明人 |
YU, JIANJUN;DONG, ZE;CHIEN, HUNG-CHANG |
分类号 |
H04B10/556;H04B10/25 |
主分类号 |
H04B10/556 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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