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1.发明授权公开(公告)号：US11943081B2
公开(公告)日：2024-03-26
申请号：US17770984
申请日：2020-10-22
发明人： Xiaobei Liu , Kushal Anand , Yong Liang Guan , Pingzhi Fan
CPC分类号： H04L25/0224 , H04L25/022 , H04L25/03292 , H04L2025/03433
摘要： There is provided a method of receiving a transmitted signal over a time-varying channel. The method includes: obtaining a received symbol signal in frequency domain based on the transmitted signal; performing a first channel estimation based on the received symbol signal to obtain a plurality of first estimated BEM coefficients; performing a first equalization based on the received symbol signal and the plurality of first estimated BEM coefficients to obtain a plurality of first detected source symbols; and performing one or more rounds of a second channel estimation and a second equalization. Each round includes: performing the second channel estimation based on the received symbol signal and a plurality of detected source symbols to obtain a plurality of second estimated BEM coefficients; performing interference removal based on the received symbol signal, the plurality of detected source symbols and the plurality of second estimated BEM coefficients to obtain an interference reduced symbol signal infrequency domain; and performing the second equalization based on the interference reduced symbol signal and the plurality of second estimated BEM coefficients to obtain a plurality of second detected source symbols. There is also provided a corresponding receiver, and a system for wireless communication over a time-varying channel including the receiver.
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2.发明公开公开(公告)号：US20240291694A1
公开(公告)日：2024-08-29
申请号：US18571425
申请日：2022-06-20
IPC分类号： H04L25/02
CPC分类号： H04L25/0236
摘要： An OFDM receiver has a first, pilot-aided channel estimation block, an output of which is provided, along with the received signal, to a first equaliser block. An output of the first equaliser block is provided, along with the received signal, to a second, data-aided channel estimation block. An output of the second channel estimation block is provided, along with the output of the first equaliser block and the received signal, to an adjustable interference cancellation block. The output of the interference cancellation block and the output of the second channel estimation block are provided to a second equaliser block. An output of the second equaliser block is provided to a de-mapping block, and is provided to the second channel estimation block and the interference cancellation block, for allowing an iterative repetition of second channel estimation, interference cancellation and second equalisation for a received signal.
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