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An efficient early stopping method is proposed in this paper to reduce the average number of iterations for low density parity check (LDPC) decoders. The method is very efficient especially when the channel signal-to-noise ratio (SNR) is low. It is based on the estimation of the log-likelihood ratio (LLR) messages of the check nodes.
An efficient early stopping method is proposed in this paper to reduce the average number of iterations for low density parity check (LDPC) decoders. The method is very efficient especially when the channel signal-to-noise ratio (SNR) is low. It is based on the estimation of the log-likelihood ratio (LLR) messages of the check nodes.
A novel arc-shaped FBG (fiber Bragg grating) lateral force sensor is developed with a pair of FBGs embedded symmetrically in an elastic bending beam. The FBG pair is produced with peak wavelength separation of about 0.4 nm. The FBG with shorter wavelength is located above the neutral layer and another with longer wavelength below the neutral layer. As a result, the two peak wavelengths of the FBG...
V-BLAST can be combined with OFDM to achieve high data rate transmission in frequency selective fading channels. Due to the high data rates nature in V-BLAST OFDM systems, a dedicated silicon solution for V-BLAST detection will be cost effective. In this paper a pipelined architecture for V-BLAST OFDM detector is presented. It is designed for a 3times3 MIMO wireless LAN system with 48 data subcarriers/20...
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