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Structured LDPC, such as RA, IRA, ARA, QC-LDPC etc., are some important LDPC codes, these codes usually have very good performance and facilitate the implementation of encoding and decoding for the structural features they have. A new method for the encoding of the structured LDPC codes has been presented, namely FFT-based parallel encoding algorithm, which uses FFT to realize the parallel encoding...
The common signals in public channels of cellular networks should be transmitted omni-directionally from the base station to guarantee reliable coverage. In this paper, we propose a transmission scheme for public channels in massive MIMO systems based on the precoding-extended Alamouti code. This proposed space-time code has the following four features: 1) the transmitted signal is omni-directional,...
There are several modules with similar structures in a SoC product line. Their contents change a lot in different product and are hard to reuse across projects, which makes similar module design occupy huge resources as brand new one. This paper proposes a methodology to abstract well-verified structures to basic functional building blocks and save them into a library by defining XML Schema. Designers...
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