公开(公告)号：US20130279558A1

公开(公告)日：2013-10-24

申请号：US13860709

申请日：2013-04-11

Applicant: NXP B.V.

Inventor： Weihua TANG ,  Arie Geert Cornelis KOPPELAAR

IPC: H04L27/26

CPC classification number: H04L27/2649 ,  H04L1/208 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/03159 ,  H04L25/03292 ,  H04L25/03324 ,  H04L27/2647

Abstract: Receiving an OFDM signal having a series of OFDM symbols, each having sub-carriers, each modulated by at least one data bit encoded with error-correcting code. The receiver has a first error-correcting decoder to decode sequentially data bits of a received first OFDM symbol; a re-encoder to receive decoded bits and re-encode a leading portion of the decoded bits; a mapper to receive the re-encoded leading portion of bits, map these bits to a corresponding subset of the sub-carriers, and thereby estimate a modulation symbol applied to each sub-carrier, by the transmitter; a channel estimator to produce a channel estimate by comparing sub-carrier modulation symbols with corresponding sub-carriers received by the receiver; and an equalizer to process the received signal to remove distortions from the transmission channel, using the channel estimate. The re-encoder begins re-encoding the leading portion of the bits before a trailing portion has been decoded.

Abstract translation: 接收具有一系列OFDM符号的OFDM信号，每个OFDM符号具有副载波，每个OFDM符号由被纠错码编码的至少一个数据位进行调制。 接收器具有第一纠错解码器，以顺序地解码所接收的第一OFDM符号的数据位; 重新编码器，用于接收解码的比特并重新编码解码的比特的前导部分; 映射器，用于接收重新编码的前导部分的比特，将这些比特映射到子载波的相应子集，从而估计由发射机应用于每个子载波的调制符号; 信道估计器，用于通过将子载波调制符号与由接收机接收的相应副载波进行比较来产生信道估计; 以及均衡器，以使用信道估计来处理接收的信号以去除传输信道的失真。 重编码器在尾部部分被解码之前开始重新编码位的前导部分。