公开(公告)号：US20120141138A1

公开(公告)日：2012-06-07

申请号：US12959874

申请日：2010-12-03

申请人： Qi YANG ,  Zhixue HE ,  Wu LIU ,  William SHIEH ,  Ivan B. DJORDJEVIC ,  Zhu YANG ,  Shaohua YU

发明人： Qi YANG ,  Zhixue HE ,  Wu LIU ,  William SHIEH ,  Ivan B. DJORDJEVIC ,  Zhu YANG ,  Shaohua YU

IPC分类号： H04B10/02 ,  H04B10/00

CPC分类号： H04L27/2096 ,  H04B10/548 ,  H04B10/611 ,  H04L1/0003 ,  H04L1/0057 ,  H04L27/223 ,  H04L27/2634 ,  H04L27/2697

摘要： The invention provides methods, devices and a system for recovering the corrupted subcarrier at the local oscillator (LO) frequency in coherent optical OFDM transmission. The method includes performing advanced coding on a data signal to obtain an encoded signal; performing high order modulation on the encoded signal to obtain a high-order-modulated signal; performing OFDM modulation on the high-order-modulated signal to obtain an electrical OFDM signal; and performing up-conversion on the electrical OFDM signal to obtain an optical OFDM signal to be output. The inventive technique of employing advanced coding with low rate combining with higher order modulation can be used to reduce the decoding bit error ratio (bit error rate) level, so that the LO subcarrier can be fully recovered while the bandwidth of the transmitted signal may be substantially the same as the existing optical OFDM system, and there is no need to add any feedback control module or feedback loop support or the like to the existing optical OFDM system, so that the complexity of the receiving side can be reduced.

摘要翻译： 本发明提供用于在相干光OFDM传输中恢复本地振荡器（LO）频率处的损坏子载波的方法，装置和系统。 该方法包括对数据信号执行高级编码以获得编码信号; 对编码信号执行高阶调制以获得高阶调制信号; 对高阶调制信号进行OFDM调制以获得电子OFDM信号; 并对电子OFDM信号执行上变频以获得要输出的光OFDM信号。 可以使用以较低速率组合高阶调制的高级编码的本发明技术来减少解码误码率（误码率）电平，使得LO子载波可以完全恢复，而发射信号的带宽可以是 与现有的光学OFDM系统基本相同，并且不需要向现有的光学OFDM系统添加任何反馈控制模块或反馈环路支持等，从而可以减少接收侧的复杂性。

公开(公告)号：US20120141135A1

公开(公告)日：2012-06-07

申请号：US12959689

申请日：2010-12-03

申请人： Qi YANG ,  Wu LIU ,  Zhixue HE ,  William SHIEH ,  Ivan B. DJORDJEVIC ,  Zhu YANG ,  Shaohua YU

发明人： Qi YANG ,  Wu LIU ,  Zhixue HE ,  William SHIEH ,  Ivan B. DJORDJEVIC ,  Zhu YANG ,  Shaohua YU

IPC分类号： H04B10/00 ,  H04B10/06 ,  H04B10/04

CPC分类号： H04J14/0298 ,  H04B10/516 ,  H04J14/02 ,  H04J14/0279 ,  H04J14/06 ,  H04L1/0065

摘要： A transmitting device, a receiving device, an optical communication system, and associated methods are provided. The transmitting device transmits an optical signal containing data, and comprises: an optical tone generator for generating at least one optical tone; at least one encoder for performing advanced coding on at least one data signal respectively, each of the at least one data signal carrying a part of the data; at least one mapper for performing high order modulation on the at least one coded data signal; and an up-converter for up-converting the at least one high-order-modulated data signal into the optical signal to be outputted through the at least optical tone. Thereby, high speed (e.g., over 1-Tb/s) transmission per single channel over a long-haul distance (e.g. over 1000-km) with error-free recovery may be achieved.

摘要翻译： 提供了发送设备，接收设备，光通信系统和相关联的方法。 发送装置发送含有数据的光信号，并且包括：光学乐音发生器，用于产生至少一个光学色调; 至少一个编码器，用于分别对至少一个数据信号执行高级编码，所述至少一个数据信号中的每一个承载数据的一部分; 至少一个映射器，用于对所述至少一个编码数据信号执行高阶调制; 以及上变频器，用于将至少一个高阶调制数据信号上变频成通过至少光调而输出的光信号。 因此，可以实现具有无差错恢复的长距离（例如超过1000公里）的每个信道的高速（例如，超过1-Tb / s）的传输。

公开(公告)号：US20130121706A1

公开(公告)日：2013-05-16

申请号：US13304355

申请日：2011-11-24

申请人： Qi YANG ,  Tao ZENG ,  Xiaoyin ZHANG ,  Zhu YANG ,  Shaohua YU

发明人： Qi YANG ,  Tao ZENG ,  Xiaoyin ZHANG ,  Zhu YANG ,  Shaohua YU

IPC分类号： H04B10/04 ,  H04B10/06

CPC分类号： H04B10/516 ,  H04B10/506 ,  H04B10/61 ,  H04L27/2637 ,  H04L27/2653

摘要： A signal transmission and reception device and method are provided. The transmission method comprises generating multiple optical carriers from a basic optical carrier; modulating optical carriers, except for a predetermined optical carrier, in the optical carriers by using multiple data signals respectively, to generate multiple optical modulated signals; and synthesizing the multiple optical modulated signals and the predetermined optical carrier into a single optical signal, and transmitting the signal. The reception method comprises separating an optical signal into multiple optical carriers, the optical carriers having different frequencies and including a predetermined optical carrier; generating from the predetermined optical carrier multiple optical waves, frequencies of which correspond to frequencies of optical carriers, except for the predetermined optical carrier, in the multiple optical carriers; and demodulating the optical carriers, except for the predetermined optical carrier, in the multiple optical carriers by using the multiple optical waves respectively.

摘要翻译： 提供了一种信号发送和接收装置和方法。 传输方法包括从基本光载波生成多个光载波; 通过分别使用多个数据信号在光载波中调制光载波，除了预定的光载波，以产生多个光调制信号; 以及将所述多个光调制信号和所述预定光载波合成为单个光信号，并发送所述信号。 接收方法包括将光信号分离成多个光载波，光载波具有不同的频率并包括预定的光载波; 从预定的光载波生成多个光载波中的多个光波，其频率对应于除了预定的光载波之外的光载波的频率; 以及通过分别使用多个光波在多个光载波中解调除了预定的光载波之外的光载波。