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In this paper, we address the design and implementation of the symbol detector for sparse channels which are described as having long spanning durations but sparse multipath structure. The traditional maximum-likelihood (ML) algorithm provides an optimal performance to eliminate the multipath effect, however its complexity scales exponentially with the channel length. As a more efficient symbol detection...
In this paper, we undertake a comparison of LDPC (768,384) and convolutional (171,133) codes for 60-GHz OFDM-based wireless communication systems. The comparison is based on two parameters: Frame Error Rate (FER) for 60-GHz channels and decoding hardware complexity for a required throughput of more than 1 Gbps. Additionally, we provide performance parameters of a fully parallel LDPC decoder chip,...
In this paper we present a multi-mode decoder architecture for convolutional codes and structured low-density parity-check (LDPC) codes based on a novel computation unit that is able to process Min-Sum as well as Add-Compare-Select (ACS) operations. Realized as application-specific instruction set processor (ASIP), this allows decoding of a vast number of different channel codes and implementation...
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