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MIMO EQUALIZATION OPTIMIZED FOR BAUD RATE CLOCK RECOVERY IN COHERENT DP-QPSK METRO SYSTEMS
MIMO EQUALIZATION OPTIMIZED FOR BAUD RATE CLOCK RECOVERY IN COHERENT DP-QPSK METRO SYSTEMS
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机译:相干DP-QPSK地铁系统中波特率时钟恢复的MIMO均衡优化
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摘要
The present invention is directed to a MIMO equalization system and method, optimized for baud rate clock recovery in coherent symbol-spaced DP-QPSK Metro systems. According to this method, the Mueller & Muller timing function is extended to cope with controlled ISI induced signals, while decoupling between MIMO equalization and clock recovery loops, using a midpoint output of the equalizer for timing estimation, instead of its final output. At least a portion of controlled Inter-Symbol Interference (ISI) is kept intact and the controlled ISI is compensated by an MLSE, right after carrier timing synchronization.
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