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Tree-structured soft-in/soft-out (SISO) processors provide an exponential speed-up relative to the standard forward-backward algorithm (FBA). These tree-SISOs were originally described analogously to fast tree-structured adders and later as standard message-passing on a binary tree graphical model for a finite state machine (FSM). In this paper, we summarize and unify these theoretical results and...
This paper explores the advantages of high performance asynchronous circuits in a semi-custom standard cell environment for high-throughput turbo coding. Turbo codes are high-performance error correction codes used in applications where maximal information transfer is needed over a limited-bandwidth communication link in the presence of data corrupting noise. Specifically we designed an asynchronous...
Modern turbo-like codes (TLCs), including concatenated convolutional codes and low density parity check (LDPC) codes, have been shown to approach the Shannon limit on the additive white Gaussian noise (AWGN) channel Many design aspects remain relatively unexplored, however, including TLC design for maximum flexibility, very low error rate performance, and amenability to simple or very high-speed hardware...
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