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- W1566669674 abstract "Low-Density Parity-Check (LDPC) code is a powerful error correcting code. It has been widely adopted by many communication systems. Finding a fast and efficient design of LDPC has been an active research area. This paper proposes a high performance design for irregular LDPC decoding on a general purpose graphic processing unit (GPGPU). A GPGPU is a many-core architecture which enables massively parallel computing. In this paper, a high degree of computation parallelism has been exposed by decoding multiple LDPC code-words concurrently. An innovative data structure is proposed to more efficiently leverage memory coalescing for the irregular data accesses of LDPC decoding. Data spatial locality is maximized by keeping more reusable data within the on-chip cache of a GPGPU. The data communication overhead between a host and a GPGPU is minimized through a single word copy for the convergence check. The experiment results show that the proposed design can achieve up to 55.68X runtime improvement, when compared with a sequential LDPC program on a CPU." @default.
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- W1566669674 date "2012-12-01" @default.
- W1566669674 modified "2023-09-23" @default.
- W1566669674 title "A highly parallel design for irregular LDPC decoding on GPGPUs" @default.
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