专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明申请

US20110188589A1 MULTIPLEXING DEVICE AND METHOD FOR ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM 审中-公开
标题翻译：正交频分复用系统的多路复用器件及方法
公开(公告)号：US20110188589A1
公开(公告)日：2011-08-04
申请号：US13001643
申请日：2009-06-26
申请人： Dongshan Bao , Xuming Li , Hongwei Si
发明人： Dongshan Bao , Xuming Li , Hongwei Si
IPC分类号： H04L27/28
CPC分类号： H04L27/2626 , H04L1/005 , H04L1/0057 , H04L1/0059 , H04L1/0068 , H04L1/0071 , H04L5/023
摘要： A multiplexing device for orthogonal frequency division multiplexing (OFDM) system comprises a first unit for combining N-path differential-modulation symbol sequences and mapping to sub-carriers of inverse fast Fourier transformation, N is an integer which is greater than 1, and a second unit for executing the IFFT of sub-carriers to realize frequency division multiplexing of multi-path differential-modulation symbol sequences. The multiplexing transmitting device can not only realize multiplexing transmission of multi-path signals in differential OFDM system, but also the device can be very simply realized, the multiplexing method for OFDM system is also disclosed.
摘要翻译：一种用于正交频分复用（OFDM）系统的多路复用装置，包括用于组合N路径差分调制符号序列并映射到快速傅里叶逆变换逆子载波的第一单元，N是大于1的整数，用于执行子载波的IFFT以实现多路径差分调制符号序列的频分复用的第二单元。复用发送装置不仅可以在差分OFDM系统中实现多路径信号的复用传输，而且可以非常简单地实现该装置，还公开了OFDM系统的复用方法。

32. 发明申请

US20110103516A1 DEVICE, METHOD AND SYSTEM FOR TRANSMITTING DIGITAL BROADCASTING SIGNAL 审中-公开
标题翻译：用于发送数字广播信号的装置，方法和系统
公开(公告)号：US20110103516A1
公开(公告)日：2011-05-05
申请号：US13000829
申请日：2009-06-26
申请人： Dongshan Bao , Fei Liu , Bin Wang , Yang Yao
发明人： Dongshan Bao , Fei Liu , Bin Wang , Yang Yao
IPC分类号： H04L27/20 , H04L27/00
CPC分类号： H04L27/2627 , H04L1/0041 , H04L1/0071 , H04L1/0072
摘要： A device for transmitting digital broadcast signal comprises: at least a first encoding unit, each of which encodes data of a sub-channel with forward error correction encoding; at least a time-domain interleaving unit, each of which receives data output from a first encoding unit and performs interleaving in time-domain on the encoded data; a first multiplexing unit, which multiplexes the interleaved data output from each of the time-domain interleaving unit into Main Service Channel (MSC) data; a second encoding unit, which performs forward error correction encoding on a second set of data to obtain Fast Information Channel (FIC) data; a differential modulating unit, which performs differential modulation on the FIC data by using a first modulation mode and on the MSC data by using a second modulation mode, wherein the modulation level of the first modulation mode is lower than that of the second modulation mode; and a frame generating and transmitting unit, which generates signal unit transmission frames by using differential-modulation symbol sequences generated by the differential modulating unit and transmitting said signal unit transmission frames.
摘要翻译：用于发送数字广播信号的装置包括：至少第一编码单元，每个编码单元用前向纠错编码对子信道的数据进行编码; 至少一个时域交织单元，每个时域接收单元接收从第一编码单元输出的数据，并在编码数据上对时域执行交织; 第一复用单元，将从每个时域交织单元输出的交织数据复用到主服务信道（MSC）数据中; 第二编码单元，对第二组数据执行前向纠错编码以获得快速信息信道（FIC）数据; 差分调制单元，其通过使用第一调制模式对所述FIC数据进行差分调制，并且通过使用第二调制模式对所述MSC数据执行差分调制，其中所述第一调制模式的调制电平低于所述第二调制模式的调制电平; 以及帧生成和发送单元，其通过使用由差分调制单元生成的差分调制符号序列生成信号单元发送帧，并发送所述信号单元发送帧。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式