公开(公告)号：US09608844B2

公开(公告)日：2017-03-28

申请号：US14287778

申请日：2014-05-27

Applicant: NXP B.V.

Inventor： Weihua Tang ,  Semih Serbetli

IPC: H04L25/02 ,  H04L27/26 ,  H04L27/227

CPC classification number: H04L25/0238 ,  H04L25/0204 ,  H04L25/0212 ,  H04L27/227 ,  H04L27/26 ,  H04L27/2601

Abstract: Embodiments of systems and methods for performing channel estimation on Orthogonal frequency-division multiplexing (OFDM) signals are described. In one embodiment, a method for performing channel estimation on an OFDM signal involves performing blind channel phase estimation on an OFDM signal to obtain channel phase information and performing blind channel magnitude estimation on the OFDM signal to obtain channel magnitude information. Each of performing blind channel phase estimation on the OFDM signal and performing blind channel magnitude estimation on the OFDM signal involves detecting and suppressing a signal path of the OFDM signal. Other embodiments are also described.

公开(公告)号：US09071492B2

公开(公告)日：2015-06-30

申请号：US13860709

申请日：2013-04-11

Applicant: NXP B.V.

Inventor： Weihua Tang ,  Arie Geert Cornelis Koppelaar

IPC: H04K1/10 ,  H04L27/26 ,  H04L1/20 ,  H04L25/02 ,  H04L25/03

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

Abstract: A first error-correcting decoder, adapted to decode the data bits of a received OFDM symbol; a re-encoder, to receive decoded bits and adapted to 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 plurality of sub-carriers, and thereby estimate a modulation symbol that was applied to each sub-carrier of said subset a channel estimator, to produce a channel estimate by comparing the sub-carrier modulation symbols with the corresponding sub-carriers actually received by the receiver; and an equalizer, to process the received signal to remove distortions introduced by the transmission channel, using the channel estimate, the re-encoder is adapted to begin re-encoding the leading portion of the bits before a trailing portion of the bits has been decoded by the decoder.

Abstract translation: 第一纠错解码器，适于解码所接收的OFDM符号的数据位; 一个重新编码器，用于接收经解码的比特并适于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，将这些比特映射到多个子载波的相应子集，从而估计应用于所述子集的每个子载波的调制符号，信道估计器， 通过将子载波调制符号与由接收机实际接收的相应副载波进行比较来产生信道估计; 以及均衡器，为了处理接收的信号以消除由传输信道引入的失真，使用信道估计，重新编码器适于在比特的尾部部分被解码之前开始重新编码比特的前导部分 由解码器。

公开(公告)号：US20150349981A1

公开(公告)日：2015-12-03

申请号：US14287778

申请日：2014-05-27

Applicant: NXP B.V.

Inventor： Weihua Tang ,  Semih Serbetli

IPC: H04L25/02 ,  H04L27/26

CPC classification number: H04L25/0238 ,  H04L25/0204 ,  H04L25/0212 ,  H04L27/227 ,  H04L27/26 ,  H04L27/2601

Abstract: Embodiments of systems and methods for performing channel estimation on Orthogonal frequency-division multiplexing (OFDM) signals are described. In one embodiment, a method for performing channel estimation on an OFDM signal involves performing blind channel phase estimation on an OFDM signal to obtain channel phase information and performing blind channel magnitude estimation on the OFDM signal to obtain channel magnitude information. Each of performing blind channel phase estimation on the OFDM signal and performing blind channel magnitude estimation on the OFDM signal involves detecting and suppressing a signal path of the OFDM signal. Other embodiments are also described.

Abstract translation: 描述了用于对正交频分复用（OFDM）信号执行信道估计的系统和方法的实施例。 在一个实施例中，用于对OFDM信号执行信道估计的方法包括对OFDM信号执行盲信道相位估计，以获得信道相位信息并对OFDM信号执行盲信道幅度估计以获得信道幅度信息。 对OFDM信号执行盲信道相位估计和对OFDM信号执行盲信道幅度估计的每一个涉及检测和抑制OFDM信号的信号路径。 还描述了其它实施例。