Fully parallel turbo decoding
Fully parallel turbo decoding
A circuit performs a turbo detection process recovering data symbols from a received signal effected, during transmission, by a Markov process with effect that the data symbols are dependent on preceding data symbols represented as a trellis having a plurality of trellis stages. The circuit comprises processing elements, associated with trellis stages representing these dependencies and each configured to receive soft decision values corresponding to associated data symbols Each processing element configured, in one clock cycle to receive data representing a priori forward and backward state metrics, and a priori soft decision values for data symbols detected for the trellis stage. For each clock cycle of the turbo detection process, the circuit processes, for processing elements representing the trellis stages, the a priori information for associated data symbols detected for the trellis stage, and to provide extrinsic soft decision values corresponding to data symbols for a next clock cycle.
US10439645B2
United States Patent and Trademark Office
8 October 2019
Maunder, Rob
76099323-7d58-4732-a98f-22a662ccba6c
Li, An
099fae06-fd69-4cab-933c-43a9b94ce1f1
Perez Andrade, Isaac
51aa4dad-b027-4b31-8cf7-1225889be1dc
Maunder, Rob, Li, An and Perez Andrade, Isaac
(Inventors)
(2019)
Fully parallel turbo decoding.
US10439645B2.
Abstract
A circuit performs a turbo detection process recovering data symbols from a received signal effected, during transmission, by a Markov process with effect that the data symbols are dependent on preceding data symbols represented as a trellis having a plurality of trellis stages. The circuit comprises processing elements, associated with trellis stages representing these dependencies and each configured to receive soft decision values corresponding to associated data symbols Each processing element configured, in one clock cycle to receive data representing a priori forward and backward state metrics, and a priori soft decision values for data symbols detected for the trellis stage. For each clock cycle of the turbo detection process, the circuit processes, for processing elements representing the trellis stages, the a priori information for associated data symbols detected for the trellis stage, and to provide extrinsic soft decision values corresponding to data symbols for a next clock cycle.
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Published date: 8 October 2019
Identifiers
Local EPrints ID: 474895
URI: http://eprints.soton.ac.uk/id/eprint/474895
PURE UUID: 4e3bc1d4-3181-4ef6-9b13-f78f7b185217
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Date deposited: 06 Mar 2023 17:55
Last modified: 17 Mar 2024 03:14
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Contributors
Inventor:
Rob Maunder
Inventor:
An Li
Inventor:
Isaac Perez Andrade
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